Some of you may have noticed it's difficult to watch dark scenes in movies on the gpad. I think the problem is the gamma calibration, you can see it clearly on the pictures I took.
https://imageshack.com/i/nf96iaj
On the top you can see my nexus 7 2013, you can differentiate all the shades of grey from 1% white to 100%.
On the gpad, everything is solid black from 1% to 12% of white.
You can find the original image here : http://imageshack.us/f/594/6291.png/
How low can you go, on your gpad, before the grey melts with the black ?
Do you know an app to apply gamma correction ?
Here you can see the same picture on the N7 and the gpad. You can't even distinguish the guy's ear on the g pad.
https://imageshack.com/i/f563trj
bobo69 said:
Some of you may have noticed it's difficult to watch dark scenes in movies on the gpad. I think the problem is the gamma calibration, you can see it clearly on the pictures I took.
https://imageshack.com/i/nf96iaj
On the top you can see my nexus 7 2013, you can differentiate all the shades of grey from 1% white to 100%.
On the gpad, everything is solid black from 1% to 12% of white.
You can find the original image here : http://imageshack.us/f/594/6291.png/
How low can you go, on your gpad, before the grey melts with the black ?
Do you know an app to apply gamma correction ?
Here you can see the same picture on the N7 and the gpad. You can't even distinguish the guy's ear on the g pad.
https://imageshack.com/i/f563trj
Click to expand...
Click to collapse
I see the difference, and I knew it was there already also.. I'm sorry, but apparently gamma is not something that is doable. - I was looking to link you the app from market called "Screen Adjuster", however you want to look at this description, especially the last sentence. ;/
- dimming the screen 15-100% (below minimum system brightness)
- screen color and a contrast adjustment
- system brightness 0-100% adjustment
- functional widget (on/off, system brightness, settings)
- autorun option
Some phones have a color tint screen. This app have a possibility to try to improve colors on this kind of the screen by setting an additional factor RGB.*
The range of the dimmer is from 15% to 100% (it allows to dim the screen below a min system brightness value). Make a relief for your eyes during a nightly reading.
Furthermore, you can change fast the system brightness too.
The additional contrast factor can try to make the reading or a picture viewing more comfortable on some screens.*
The widget provides fast on/off service with a shortcuts to the Adjuster settings and the system brightness settings.
The application has the autorun option which works with the dimmer set above 22% (for the safety).
Note
A gamma adjustment is not possible to do.
You can of course try and download the app anyways and see if contrast or brightness will do anything for ya.
- In case you do download the app, remember that setting contrast low will result in problems with installing apps, as in you cannot hit Install, only cancel. To avoid this, open up Screen Adjuster and turn it off, install the app and turn it back on afterwards. It's something about lowering the settings to lower than what is "intended", I don't quite understand it and I find it rather odd. But it let's you install apps.. So I guess hooray.
That's all I got.
CuraeL said:
I see the difference, and I knew it was there already also.. I'm sorry, but apparently gamma is not something that is doable. - I was looking to link you the app from market called "Screen Adjuster", however you want to look at this description, especially the last sentence. ;/
That's all I got.
Click to expand...
Click to collapse
Thank you for your response, but I'm already using screen adjuster. I set the contrast at -25 and it helps a lot to see dark details.
Unfortunately, it has two side effects :
- it brightens the dark shades of grey, but also the black levels.
- I noticed that the contrast setting also affects the white making it look like light grey.
So the contrast setting in screen adjuster doesn't affects only the dark tones like it would on a monitor or a tv, it affects the contrast ratio.
I've found apps to make gamma adustment but it only works on some devices with custom kernel.
https://play.google.com/store/apps/details?id=com.teamkang.fauxclock&hl=fr
- Gamma curve (Galaxy Nexus, Nexus 4, HTC One, Nexus 7 2013)
bobo69 said:
Thank you for your response, but I'm already using screen adjuster. I set the contrast at -25 and it helps a lot to see dark details.
Unfortunately, it has two side effects :
- it brightens the dark shades of grey, but also the black levels.
- I noticed that the contrast setting also affects the white making it look like light grey.
So the contrast setting in screen adjuster doesn't affects only the dark tones like it would on a monitor or a tv, it affects the contrast ratio.
I've found apps to make gamma adustment but it only works on some devices with custom kernel.
https://play.google.com/store/apps/details?id=com.teamkang.fauxclock&hl=fr
- Gamma curve (Galaxy Nexus, Nexus 4, HTC One, Nexus 7 2013)
Click to expand...
Click to collapse
Yea, I was about to say that gamma can be done but only on custom kernels. Lot of Nexus 5 stuff on the market. Apparently it's Google who locked the gamma settings completely down but only in 4.4.2. I guess it may work on stock LG Kernel since it's only 4.2.2? I'm afraid we'll have to wait for some kernel support for other roms. That would be awesome. I really hope for some Franco-kernel-glory on this device.
That's what I thought, we need to wait for custom kernels...I hope it will come soon, because it's so frustrating to have such a good screen with bad calibration !
People tends to complain too much about the warm white balance but the gamma calibration is far more concerning.
bobo69 said:
That's what I thought, we need to wait for custom kernels...I hope it will come soon, because it's so frustrating to have such a good screen with bad calibration !
People tends to complain too much about the warm white balance but the gamma calibration is far more concerning.
Click to expand...
Click to collapse
I hope @dalingrin can cook something up to address both. He said he was going to work on something.
joshuadjohnson22 said:
I hope @dalingrin can cook something up to address both. He said he was going to work on something.
Click to expand...
Click to collapse
Yes it would be great if he did , though he's done so much for us already.
Sent from my LG-V500 using XDA Premium 4 mobile app
I see someone had developed a nude kernel for our devices. I welder off they can add support for gamma adjustment
Sent from my LG-V500 using Tapatalk
I am pleased to say my new kernel BOB Kernel v2 has had the gamma corrected
My first post ever
YoungBobbie said:
I am pleased to say my new kernel BOB Kernel v2 has had the gamma corrected
Click to expand...
Click to collapse
Hi there Young Bobbie, I am new to posting on XDA so I couldn't post this in your kernel developer page. This is my first post on any forum page ever. First off, thank you very much for your hard work to make this kernel happen to correct gamma on the v500. I have been sitting on the fence whether to get the gpad, and if i would get the v500 or the v510. Was leaning toward the v510 because of Sleekmason's wonderful kernel work, but it's exciting that we have now have the same options available for the v500. I noticed this was working fully with the Malladus ROM. My question to you was whether or not this worked with stock LG ROM as well? Thank you again YoungBobbie and Sleekmason for your time and creations.
Sorry, just answered my own question. Guess it helps to read the very first line of the page (making fun of myself now ;-P) Thank you again YoungBobbie and sleekmason!!!
themorningwolf said:
Hi there Young Bobbie, I am new to posting on XDA so I couldn't post this in your kernel developer page. This is my first post on any forum page ever. First off, thank you very much for your hard work to make this kernel happen to correct gamma on the v500. I have been sitting on the fence whether to get the gpad, and if i would get the v500 or the v510. Was leaning toward the v510 because of Sleekmason's wonderful kernel work, but it's exciting that we have now have the same options available for the v500. I noticed this was working fully with the Malladus ROM. My question to you was whether or not this worked with stock LG ROM as well? Thank you again YoungBobbie and Sleekmason for your time and creations.
Sorry, just answered my own question. Guess it helps to read the very first line of the page (making fun of myself now ;-P) Thank you again YoungBobbie and sleekmason!!!
Click to expand...
Click to collapse
Gald to have helped would you be willing to try the kernel for the stock LG ROM?
Please take a look at the images below and compare
The tablet on the right is running my kernel and the left stock
You can see the differences on the first image as the deepness of the blacks
and on the second the highlights on the white
I just about to get this tablet, then i so this problem... ?
Sent from Note 3 Superphone!
Bob2702 said:
Gald to have helped would you be willing to try the kernel for the stock LG ROM?
Click to expand...
Click to collapse
Be happy to. Have to acquire the device first, which will be in a matter of a week or 2
Related
The Instructions:
Short, sweet, and straight to the point: So, here's what you do... you will want to download the app called Screen Filter with the market link provided below. After you do that, within the Screen Filter app you will want to drag that brightness bar to say 85.1% and then hit enable. This won't lower your current screen brightness very much so no worries there. You should hopefully notice a difference for the better all around, especially viewing from an odd angle. It helps to reduce that white backlight look you get from a side view. I will typically set the in app brightness to either 85.1%, 75.5%, or 72.5%, and my actual system brightness to 50%. It works quite well without being too bright or too dark. And it goes without draining much, if any battery life. Feel free to try other brightness settings to fit your personal needs.
Try it on other Android devices as well, it works great! The best way to test it out is to use the widget. You can turn it off and on while changing your viewing angle to compare and see the difference for yourself on your homescreens. Forget about a complicated method and get yourself a better screen today with Screen Filter!
Screen Filter Can Be Found Here:
https://market.android.com/details?id=com.haxor&feature=search_result
Showing Off Side Angle View:
You will be able to notice that in the after screenshot the green bar across the top of the market app is quite a bit more vibrant and has more of a green color than the before screenshot. And you will also notice that the white back light color will be enhanced as well, giving a better appearance from the side viewing angles. A nifty little quick fix, if you will.
Before:
After:
Screen Filter Known Issues Reported By Users:
*Being completely stock and using the stock system apps seems to be causing some major lag issues (Xoom)
*Cannot seem to click install when you are manually installing an apk without disabling (Xoom)
*Cannot compose emails without disabling (Nexus S)
You can add to this list. If you find anymore issues please post them here and I will add them to my list above. After we gather most/all issues that we are having I will let the dev know what we have found and we can make some positive results for all! Maybe we can even have some new features added in a new release. Once the Honeycomb source gets released and we start getting custom ROMs, expect user interface tweaks such as what you find in Cyanogenmod. Until then, use this. It's the easiest and best tool we have for now.
Note For Screen Filter:
This method may only be effective on the 3G version of the Xoom. It appears that it may not be noticeable as much, if at all on the Wifi model.
Make That High Def Screen Even Higher:
For this you will need to be a root user, and always be sure to have a current Nandroid backup handy just in case.
You will want to download the free app called LCD Resolution (Root). You can find it on the market here. Open the app, and then you will see your current density setting as well a list of density options for you to choose from. The default density value for the Xoom is 160. I do not recommend that you go below 140, as certain screen elements may become misaligned. Just dropping the value down by 10 to 150 makes a nice noticeable difference.
Basically: The default density value for the Xoom is 160. I recommend using either 150, or 140 as your density value and nothing less. I think 150 seems to be right where most people would want their screen to be if they wanted to go just a bit higher def. It makes the resolution a little nicer without going too overboard. After you choose your density setting, don't forget to check the "Always Set on Boot" box. This makes it so much easier so that you will not have to worry about setting this up with every single time you boot. Then hit apply, reboot your Xoom, and then make sure that the settings stick. Done!
Apply one of the density settings I have listed with one of the Screen Filter settings also listed for a nice effect. It's almost as if you have a whole new tablet when you combine the two!
Currently: I am using the 140 density value on my Xoom, and I couldn't be happier!
Default Density Value 160:
Density Value 150:
Density Value 140:
If these tips have helped you out toss me a thanks. If I get more positive feedback I will be adding some more great helpful tips for us Xoomers. Thanks for stopping by!
Thank you for a great tip. My Xoom screen look better now. This is why I love to visit XDA everyday.
Will check with Acer A500.
im not really seeing a difference.
patass said:
im not really seeing a difference.
Click to expand...
Click to collapse
The difference is there. Try viewing from different angles instead of straight on and compare. I added my own screenshots of my Xoom just now and you should be able to see a nice difference from the before and after. This method really helps the side viewing angles a lot by reducing the white backlight that causes the screen to distort when not looking directly down on it. But it looks really great all around, not just from the side.
so what do i put the system brightness at? and what do I put the screen filter percentage at?
incrediblenotinstock said:
so what do i put the system brightness at? and what do I put the screen filter percentage at?
Click to expand...
Click to collapse
You can customize and set it to whatever you like. Me, for normal usage I like to use 50% for the system brightness and 85.1% for the Screen Filter brightness. I think it works quite well this way without being too dark or too bright. I use this setting on both my Xoom and my OG Droid.
I see what your saying, the viewing angle is alot better now, thanks OP
wow, makes a huge difference for me, thanks
How does it impact battery usage at the 50/85?
Brolloks said:
wow, makes a huge difference for me, thanks
How does it impact battery usage at the 50/85?
Click to expand...
Click to collapse
It really does not impact the battery life very much if at all. In fact it possibly might save a little bit of battery life if anything. I've been using this setup for months and it has been working great.
my home screen n browser seems laggy when using it. Anyone has the same issue with me?
omnia1994 said:
my home screen n browser seems laggy when using it. Anyone has the same issue with me?
Click to expand...
Click to collapse
Yep...real laggy. Uninstalled
omnia1994 said:
my home screen n browser seems laggy when using it. Anyone has the same issue with me?
Click to expand...
Click to collapse
Hmm.. interesting. I use it all the time without any kind of problem. What launcher and browser are you using? And are you stock or rooted?
I'm using both Adw Launcher and Launcher Pro depending on my mood and they both work great with Screen Filter enabled.. no lag of any kind. And my browser of choice is always Dolphin HD and it also works without any lag. I'm on a rooted 3.1 Xoom with the latest tiamat kernel. Maybe I can help solve the problem?
i am curious why one would jack their screen brightness up to 85% in the first place, 33% gets a perfectly view able screen indoors. Not to mention the savings wrt battery life.
Kokanee483 said:
i am curious why one would jack their screen brightness up to 85% in the first place, 33% gets a perfectly view able screen indoors. Not to mention the savings wrt battery life.
Click to expand...
Click to collapse
The 85% is for filter not brightness.
Sent from my PC36100 using XDA App
omnia1994 said:
my home screen n browser seems laggy when using it. Anyone has the same issue with me?
Click to expand...
Click to collapse
Yep, nice for off angles but for sure adds all types of lag. Bonse stock 3.1 no root. Factory launcher... isn't their a color control like what's available for the Nexus S? You would think with the screen wash out complaints someone would have come up with an answer by now.
Just tested another app. Really liked the effect on off angles so I'm searching the market for other stuff. There is another app called back light filter. It alowsyou to adjust the Alpha levels along with individual colors. Have to tinker to find the best fit but no home screen lag.
lstrike said:
Just tested another app. Really liked the effect on off angles so I'm searching the market for other stuff. There is another app called back light filter. It alowsyou to adjust the Alpha levels along with individual colors. Have to tinker to find the best fit but no home screen lag.
Click to expand...
Click to collapse
I've tested this app before and it's so so. Most users will want something easy to use without much tinkering or setup. It works pretty well through, but it could use some more features, it lacks a widget, and there is no notification bar icon for fast access. Good comment though. Maybe the people who are completly stock everything should give this a go since they are reporting lag issues.
I don't see any difference.
Sent from my Xoom using XDA Premium App
diablo2224 said:
I've tested this app before and it's so so. Most users will want something easy to use without much tinkering or setup. It works pretty well through, but it could use some more features, it lacks a widget, and there is no notification bar icon for fast access. Good comment though. Maybe the people who are completly stock everything should give this a go since they are reporting lag issues.
Click to expand...
Click to collapse
I agree with you on the simplicity of the app in the original post. If the developer can dial out the lag it is definately the best tool for screen filtering on the xoom. I just wish the OEMs would provide simple calibration tools for screens.
Ok, i started this thread to discuss about new CM9 feature: the color tuning
The feature, with build 14, has become mature and then here we can share our best settings
Remeber that screens aren't all the same so colors can varie from phone to phone, but generally there aren't much difference
Please use this thread only for CM color question
The general cm9 thread is here
All other question will be ignored
so far i'm using
Red 0.917
Green 1
Blue 0.944
red gamma 11
green gamma 12
blue gamma 11
Setting must be with this format
Red
Green
Blue
Red gamma
Green gamma
Blue gamma
but i'm not 100% satisfied, so i'm working to get better possible
hi there...before i start fiddling with it..can u help me understand what each slider do?
Also..right now the CM colors are perfect but there is a lot of noise in darker pictures how can i correct it without making the overall picture yellowish?
thanks!
currently using
.591
.591
.591
7
5
5
First slider's series concern rgb adjustement, the second change the gamma of each color
I'm trying to understand how it works properly
With these adjustment you can mix red,green and blu and try to have best looking possible color
If you set all color t same setting would be few useless, we must try differents level to have acceptable black and white, which are the extreme opposite colors
Maybe someone can help faster than me
As I wrote in the CM9 General thread, your settings look amazing erto90.
I tried messing around myself but I don't have the eye for this stuff.
Andeby said:
As I wrote in the CM9 General thread, your settings look amazing erto90.
I tried messing around myself but I don't have the eye for this stuff.
Click to expand...
Click to collapse
Ok thanks, but i opened the thread to share our settings
I've reached my settings after 15m of trying but i think we can do better!
So, guys, share best settings you can!
So messing around again with this, I just put gamma to 20 on all colors, using the color settings in OP, and I am really liking it.
Edit:
Red gamma 11
Green gamma 15
Blue gamma 11
Looks good too.
All at 20 became a bit weird after using it for a while.
My settings with balanced white and black:
0.868
0.632
0.688
3
6
5
Not perfect but looks for me realy good.
This is my settings, were made by a photographer friend of mine...
0.5
0.438
0.581
-14
-10
-7
My settings for yellow tinted screens such as mine.
0.680
0.573
0.884
-16
-20
-17
That's made to avoid the green bug at minimum darkness and to try to keep acceptable dark greys.
Sure it's still quite saturated but anything with more gamma turn the grey too bright...
Though I have to say it's better than Voodoo hack, perhaps because the MDNIE are disabled (they lighten the greys and turn them red on Samsung roms).
spakkkk said:
This is my settings, were made by a photographer friend of mine...
0.5
0.438
0.581
-14
-10
-7
Click to expand...
Click to collapse
this setting is good! thanks man
spakkkk said:
This is my settings, were made by a photographer friend of mine...
0.5
0.438
0.581
-14
-10
-7
Click to expand...
Click to collapse
Just wanted to say thanks for sharing these settings, they look great!
i have new settings.
they are really better but when the brightness is low they look a little bit greenish, maybe kernel issue.
0.231
0.231
0.280
-14
-16
-10
My settings:
0,500
0,438
0,581
-9
-9
-0
btw. can someone tell me what is mDNIe Mode??
(it says it´s display post-processing) ..is anyone using it?? ..and what mode do you use?
sokre988 said:
My settings:
btw. can someone tell me what is mDNIe Mode??
(it says it´s display post-processing) ..is anyone using it?? ..and what mode do you use?
Click to expand...
Click to collapse
It's a kind of filter that boosts particular colours, quite like digital vibrance on your PC video card.
I don't like this, it gives more banding and tint in the dark greys.
Tatsuya79 said:
It's a kind of filter that boosts particular colours, quite like digital vibrance on your PC video card.
I don't like this, it gives more banding and tint in the dark greys.
Click to expand...
Click to collapse
Thanks, I´ve tried all 4 modes, and the best one is UI mode ..I´ll see how it looks on games, movies, pics etc..
spakkkk said:
i have new settings.
they are really better but when the brightness is low they look a little bit greenish, maybe kernel issue.
0.231
0.231
0.280
-14
-16
-10
Click to expand...
Click to collapse
Yeah they look just as good, but unfortunately I run at low brightness more often that not and the green tint is a deal breaker. Gonna play with it and see if I can eliminate or at least reduce it. Thanks again.
My settings are...
1,000
1,000
1,000
-14
-12
-11
erto90 said:
Ok, i started this thread to discuss about new CM9 feature: the color tuning
The feature, with build 14, has become mature and then here we can share our best settings
Remeber that screens aren't all the same so colors can varie from phone to phone, but generally there aren't much difference
Please use this thread only for CM color question
The general cm9 thread is here
All other question will be ignored
so far i'm using
Red 0.917
Green 1
Blue 0.944
red gamma 11
green gamma 12
blue gamma 11
Setting must be with this format
Red
Green
Blue
Red gamma
Green gamma
Blue gamma
but i'm not 100% satisfied, so i'm working to get better possible
Click to expand...
Click to collapse
perfect for me
just would like to share my settings
(because I love voodoo color, so, my setting is nearly the same with voodoo color)
great color, great red, great green, great blue.
Red 0.874
Green 0.874
Blue 0.949
Reg Gamma -15
Green Gamma -15
BLue Gamma -18
if you have suggestion, you can tell me..
have a nice day with great color.. ^^
.860
.868
.1
20
20
18
I used voodoo color back at gingerbread and this settings are pretty close to me..
Give this settings a try.
Sent from my GT-I9000 using XDA
I have installed Paranoid Android on my Note and noticed that there is severe clipping in the CM9 UI elements. Even the default ICS wallpaper , the one with the"rainbow" coloing stripes show severe clipping on the lockscreen. It looks just plain ugly. And since most of the CM9 UI backgrounds are a shade of grey, there is severe clipping of these grey elements to a purplish pixellation and to black. You can notice this if you take the settings page in Paranoid android or any other CM9 based ROM (assuming most CM9 based ROMS have the same default theme) Look under the status bar where the grey background fades to black and you may notice severe pixellation like issues at that area. Now, go to advanced, screen settings and MDNIE mode, you will notice that the clipping keeps changing when changing modes but its still there in every screen mode.
How many of you are experiencing this? Assuming a majority of the people who run Custom ROMS run a CM9 based ROM, why isnt this issue reported anywhere? I'm asking because, the issue is plainly visible in these grey areas and UI elements making the visual experience really bad. And why is Gamma Control disabled in these CM9 kernels? I believe lowering the gamma would solve the problem.
I've noticed that CM9 kernels have the worst clipping whereas in other stock based kernels, the clipping is comparitively lower, closer to the stock kernels.
So once again users of CM9, please do report if you face this issue.
CM9 users please report back because I havent seen anybody talking about this issue in any of the CM9 related ROMS thread. People seem to ignore an issue which stares back right at the face even in ambient lighting. Why havent this been reported?
I dont have much idea about who develops CM9 kernels for the note. How can we contact the CM9 developers and let them know of this issue and request to enable Gamma Control within the kernel?
Somebody please help me out here. Because its been a month after I bought my note and I've been struggling and doing my best to find a solution to this horrible clipping. I had got in touch with GSMArena and got this issue published, yet Samsung never responded, I tried kernel after kernel and realised that the intensity of the issue varies from kernel to kernel. I've seen that whomever I ask about the clipping in this forum says they have it but then everyone seems to be happy running different ROMS and in these CM9 based ROMs which look as close to stock Google ICS UI have severe clipping all over the UI and yet people dont seem to bother.
So what can I conclude from this? Is this an isolated issue or are all of you Note users who have this issue just keeping silent and living with it?
I do not mean to spoil anybody's peace or anything. I clearly dont know how to get in touch with the CM9 devs for the Note, somebody help me if possible. And if you feel that this is an isolated issue, do let me know otherwise. Because, when the basic UI shows severe clipping, the whole user experience is spoiled and nobody wants to live in fear with bright UI elements and bright wallpapers dreading the clipping if anything at all has to be dark. We paid a premium for this device and even Samsung seems to ignore. I have the SGS3 and there is no clipping on it but just that everything seems darker on the GS3 when compared to the Note. This alone shows that Gamma is a culprit here and I could just sell away my Note and just live with the GS3. But that doesn't help anybody who is facing this issue and wants to see a solution. Even I personally like the note more than the GS3 and I want to keep it but for this issue. Not everybody has the money to jump to the next flagship every now and then and for the people who spent their money on the Note doesn't have to "live with it" just because they decided to buy it without knowing such an issue existed. Not every store lets you try and trial their devices before buying them.
Samsung has even seemed to ignore the EMMC issue even after claiming they are "working on it" I dont see anything productive from Samsung's side as even a device which was previously unaffected had the affected kernels pushed to it via an update. So basically if it was not for people like Entropy who works day and night for that issue, Samsung could keep replacing motherboards for every random wipe a user does. They basically want to sell the note until the Note 2 and then this wouldn't be their problem anymore. Problems like the emmc bug is a MISTAKE from Samsung's part and they should be ready to repair devices even beyond warranty as the user may have only done the most harmless thing, i.e to reset the device to factory settings.
So, coming back to topic, how do we get in touch with the CM9 devs and enable gamma control on these ROMs? Most ROMS have gamma control under MDNIE settings which is greyed out, most probably because the kernel doesnt support it. This is the best I can do for the people who are affected by the clipping issue as I'm not a developer. This issue isnt an isolated case in my opinion and affects every Note I've got a chance to see.
It might help if you actually posted requests in the cm9 discussion thread? #commonsense
Seriously after reading TS long posts still*cannot figure out his problem
please post shots to show your issues
I have been using CM9 roms since build 2 and do not seem to notice such issues or maybe i am blind ?
mobile88 said:
Seriously after reading TS long posts still*cannot figure out his problem
please post shots to show your issues
I have been using CM9 roms since build 2 and do not seem to notice such issues or maybe i am blind ?
Click to expand...
Click to collapse
Yeah. OP is TL;DR complaining about some "severe" issue I've never seen and no one else has.
As to gamma control being disabled - I should remove that from the settings app, as that's something supported by the I9100/I777 display driver but not ours.
Entropy512 said:
Yeah. OP is TL;DR complaining about some "severe" issue I've never seen and no one else has.
As to gamma control being disabled - I should remove that from the settings app, as that's something supported by the I9100/I777 display driver but not ours.
Click to expand...
Click to collapse
Oops..I'm sorry for the long post. Its basically about the severe "black clipping" which has been affecting the Note since release. This issue is best seen when displaying dark shadows in images and videos. There were many threads discussing this issue. And GSMArena had published this issue in their news after I mailed them about the same.
What I wanted to tell was, I feel this is caused by the Note's screen having the gamma cranked up quite high and I believe lowering the gamma would resolve this issue.
The default CM9 theme shows severe clipping in backgrounds and UI elements. All the grey backgrounds, (the default theme) clip to black just below the status bar.
Even all the videos which have dark shadows are totally blocky due to this and the clipping makes them literally unwatchable.
I had reported this issue to GSMArena
http://www.gsmarena.com/samsung_galaxy_note_plagued_by_display_issues-news-4513.php
I wanted the Gamma Control feature which is presently disabled to be enabled in the CM9 kernels so that we can tune down the Gamma to eliminate this clipping
The same issues existed on the GNexus and was fixed with the Lean Kernel which had Gamma Tuning.
So once again, in short, I'm talking about the "Black clipping\crush" on the Note when displaying darker shades of colours.
All the notes have this problem, and we need to access to gamma control but as supercurio said it won't solve all the problems of the black clipping and banding issues
Sent from my GT-N7000 using xda premium
Satishp, i know what are you talking about. Just take a picture of your note and post it here. Of course, you won't use a screenshot feature but a camera.
I sold my note bc of the black clipping issue, but now I cannot buy an s3 or HoX cause their screens are just to small, that is, narrow. Gonna buy Note again and hope some solution will come out. It is too bad to buy a phone for its screen and get a crappy quality. Issue on s3 is solved with lowered gamma. Comparing with the Note, s3 has much darker screen. Sometimes too much.
Entropy512 said:
Yeah. OP is TL;DR complaining about some "severe" issue I've never seen and no one else has.
As to gamma control being disabled - I should remove that from the settings app, as that's something supported by the I9100/I777 display driver but not ours.
Click to expand...
Click to collapse
It's a very real issue affecting EVERY Note, derp
NotablyNice said:
It's a very real issue affecting EVERY Note, derp
Click to expand...
Click to collapse
http://www.gsmarena.com/samsung_galaxy_note_plagued_by_display_issues-news-4513.php
Huh?
Everytime I turn my screen on I smile at how awesome it is..Hell it seems even better now that I have been using cm10 but i think thats just because its brightness seems to be overall set higher.
MrDSL said:
Huh?
Everytime I turn my screen on I smile at how awesome it is..Hell it seems even better now that I have been using cm10 but i think thats just because its brightness seems to be overall set higher.
Click to expand...
Click to collapse
Same. I don't often stare at my phone from a distance of 3cm to see any imperfections.
Sent from my GT-N7000 using xda premium
All of the speculation and misinformation of this issue is really starting to get frustrating. First, the issue IS with the hardware. It may be possible to reduce it's impact using software but the fact remains this is a hardware issue. How do I know? I have replaced my Note's screen and the newer screen I have isn't as good as the old one.
The new one isn't awful, it simply isn't as good as the other.
2nd point - everyone will have this issue. It is simply an inherent problem with the screen hardware and it is completely implausible that there are 1 or 2 'perfect' screens out there. There will simply be variations. Some people WILL have better screens than others. For some people the issue may be completely unnoticeable and for others it will be glaringly obvious. Don't judge or hate on people because their screen is worse than yours and vice versa.
3rd the issue is MORE noticeable at lower brightness values than high brightness values. If you have your note on higher brightness values then you're unlikely to notice it. In my case, I can not see any clipping if I am in a lit room. The only time I can see it is when I'm sat in the dark with very low brightness. As I said above this will vary from person to person.
I have attached 2 photos below. One is a normal exposure where you can see the clipping is hard to see. Another is a long exposure which amplifies the issue more and makes it more noticeable (I used a longer exposure on my camera to show this). Fortunately it isn't so bad for me, but for some people my long exposure image is the reality unfortunately.
Standard: http://i48.tinypic.com/4uxnia.jpg
Long Exposure: http://i48.tinypic.com/5akew3.jpg
Why have we got a clipping problem and can software solve it? I believe it is highly unlikely that this issue can be solvable. I also think the issue stems from one simple shortcoming to the screen; the minimum brightness achievable per pixel. The problem is the jump from this minimum brightness to the 'off' (perfectly black) pixel is too great. There is no transition. Can gamma control solve this? I'm not convinced. I think the issue is more to do with what the lowest pixel brightness the screen is capable of. For the poorer people this minimum brightness will be quite bright. For others the minimum brightness will be lower.
If any devs know of a way of controlling pixel brightness on a level where it can be noticeably changed and if it is possible to reduce this minimum brightness then sure, it would certainly be a possibility. But I don't think this is possible.
Part of this might be a limitation of the HD Pentile AMOLED technology. But if you notice, both the Galaxy Nexus and the Galaxy S3 share the same technology. For people who argue that the S3 uses a different manufacturing procedure, Samsung has no where mentioned this and its just an assumption.
The GNexus had the same issue but was solved with the LEAN kernel which implemented a gamma control within the kernel. If you've seen the S3's screen ( I own an S3 too, So I've spent a good time comparing), you will notice that the S3's screen is visibly darker than the Note's screen. Images tend to look darker and this shows that the S3's screen has its gamma set to a lower value which eliminates the clipping.
More proof for you, lets take the gammatest image and view it on our PC. Most PCs use an LCD display and still you can see the greys gradually fading to black.
Now increase the gamma of your display from your display adapter's color settings and view the same image again. You will see that you can see all the way upto 1 and then black just like how the image is displayed by the note.
http://forum.xda-developers.com/showthread.php?t=1800117
Now view a 720p or 1080p clip on your PC with the gamma values still high, you will see the clipping in every dark scene. Try it yourself.
This shows that gamma calibration can correct the issue to atleast some extent.
Hmm. There appears to be truth in what you say. Unfortunately the Note is lacking somewhat in the developer department. And the few devs there are have other pressing issues to deal with so the question becomes who can implement gamma control on the Note?
MrDSL said:
Huh?
Everytime I turn my screen on I smile at how awesome it is..Hell it seems even better now that I have been using cm10 but i think thats just because its brightness seems to be overall set higher.
Click to expand...
Click to collapse
Yup. Despite being pentile, compared to my I9100/I777 the screen is even more gorgeous.
I'm on minimum brightness nearly all the time. No clipping issues whatsoever.
MrDSL said:
Huh?
Everytime I turn my screen on I smile at how awesome it is..Hell it seems even better now that I have been using cm10 but i think thats just because its brightness seems to be overall set higher.
Click to expand...
Click to collapse
Yup, and it's even better when you switch the screen mode to "Dynamic" (Advanced Settings).
Sent from my GT-N7000 using xda premium
I have the clipping regardless of which mode I put it in, apart from the clipping the screen is mint, which makes me even more pissed off when I watch a movie and a dark scene comes on, then the shade between black and grey turns into a lego block mess. I really cant beleive so many people are happy with it, half of u guys must be blind, I exchanged my Note twice, tested my cousins and my bosses Notes, all have the exact same problem. I even bluetoothed the gamma test image to a few in carphone warehouse , same with them, even the samsung rep I spoke to over the phone said the one they have in the office also has the issue. Total crap imo, Samsung total FAIL.
Entropy512 said:
Yup. Despite being pentile, compared to my I9100/I777 the screen is even more gorgeous.
I'm on minimum brightness nearly all the time. No clipping issues whatsoever.
Click to expand...
Click to collapse
Actually use your Note and go watch a dark movie... It's there
NotablyNice said:
Actually use your Note and go watch a dark movie... It's there
Click to expand...
Click to collapse
I've watched plenty of dark movies... As good as if not better than my I9100/I777.
Entropy512 said:
I've watched plenty of dark movies... As good as if not better than my I9100/I777.
Click to expand...
Click to collapse
Please take a picture if your note displaying the gamma test image (blocks numbered 1 to 20) with stock gallery app in a dark room, screen mode dynamic, max brightnes with auto adjust switched off, I bet number 4 is light grey, then number 3 is black, if so your device has black clipping. There should be no abrupt drop from grey to black, it should be a gentle fade.
Thanks.
I like to read at night in dark room, and I find that even on lowest brightness screen is to bright.
I am stock rooted and unlocked, I tried adjbrightness (I use it on my gNex) but it must not be supporting Jelly Bean yet.
Any thoughts? I miss Adjbrightness
Screen Dimming App
whatsinaname said:
I like to read at night in dark room, and I find that even on lowest brightness screen is to bright.
I am stock rooted and unlocked, I tried adjbrightness (I use it on my gNex) but it must not be supporting Jelly Bean yet.
Any thoughts? I miss Adjbrightness
Click to expand...
Click to collapse
I use ScreenDim on a Galaxy Tab 7 Plus and on a Kindle Fire, and it works very well. My Nexus 7 doesn't arrive til later today, so I can't guarantee it will work, but the developer says it works on Jellybean. I like the fact that this app has presets which allow you to easily vary brightness and contrast as lighting conditions change. There is a trial version available. In summation, I recommend this app!
ETA: This app makes it possible to lower brightness below what the device would normally allow, by combining the brightness and contrast adjustments.
redb33s said:
I use ScreenDim on a Galaxy Tab 7 Plus and on a Kindle Fire, and it works very well. My Nexus 7 doesn't arrive til later today, so I can't guarantee it will work, but the developer says it works on Jellybean. I like the fact that this app has presets which allow you to easily vary brightness and contrast as lighting conditions change. There is a trial version available. In summation, I recommend this app!
Click to expand...
Click to collapse
That will only make the colors/whites darker since it just draws a semitransparent black "sheet" on top of everything.The backlight will be just as strong.
Edit: sorry maybe screen dim does adjust the backlight... maybe I'm thinking of a different app.
OP, you could try rootdim from the play store, as it uses root to lower the backlight more. Not sure if it works wit the 7.
Or changes can be done in the kernel source.
Sent from my Galaxy Nexus using xda premium
Metallice said:
That will only make the colors/whites darker since it just draws a semitransparent black "sheet" on top of everything.The backlight will be just as strong.
OP, you could try rootdim from the play store, as it uses root to lower the backlight more. Not sure if it works wit the 7.
Or changes can be done in the kernel source.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
This app has two modes, one which lowers actual brightness, and one which adds a the semitransparent overlay you mention. You can use either or combine them to achieve lower light levels. IIRC, according to the developer, the one which lowers brightness saves battery, while the 'gray sheet' mode does not.
Anyway, since there is a trial version available the op could see if it works.
Previously, I tried another app which only had the semitransparent overlay, and did not find it as effective.
I had the same issue. I've used Screen Filter previously. Now I'm using Elixer 2 screen filter toggle on a widget. Both work great and are free.
Check out RootDim. I'm not sure it's compatible with JB yet since I'm without an N7 for now, but if so, give it a shot. I tried it on my Bionic and it did the job nicely. I eventually uninstalled it because it messed with the capacitive button backlights, but obviously that's not an issue for the N7.
bushpilotwannabe said:
Check out RootDim. I'm not sure it's compatible with JB yet since I'm without an N7 for now, but if so, give it a shot. I tried it on my Bionic and it did the job nicely. I eventually uninstalled it because it messed with the capacitive button backlights, but obviously that's not an issue for the N7.
Click to expand...
Click to collapse
RootDim works, Thanks a bunch. I like Adjbrightness, but if it doesn't work, it doesn't work
We all know that some of the color looks washed when we watch in a diff angle , also the head on looks sometimes may not look great since BE2 is not applied all time .
not sure if this works as I dont have a rooted phone ( dont plan to root till 4.2 ) can anyone test this on their rooted phone and post results and reviews please?
https://play.google.com/store/apps/details?id=com.nexus4displaycontrol&feature=search_result
this appears to work very well with the Nexus4 hope should work on the XZ too
awaiting positive results
does this work?? any conformation..
ethan3686 said:
does this work?? any conformation..
Click to expand...
Click to collapse
That is what I want someone to try as my XZ is not rooted and this app requires root..
anirudhks said:
That is what I want someone to try as my XZ is not rooted and this app requires root..
Click to expand...
Click to collapse
I can't even download it... My device is not compatible..
Sent from my C6603 using xda premium
This app is incompatible with your SingTel Sony C6603. Sadly.
anirudhks said:
We all know that some of the color looks washed when we watch in a diff angle , also the head on looks sometimes may not look great since BE2 is not applied all time .
not sure if this works as I dont have a rooted phone ( dont plan to root till 4.2 ) can anyone test this on their rooted phone and post results and reviews please?
https://play.google.com/store/apps/details?id=com.nexus4displaycontrol&feature=search_result
this appears to work very well with the Nexus4 hope should work on the XZ too
awaiting positive results
Click to expand...
Click to collapse
Try screen adjuster. Does not require root.
Tried it. It doesn't work. Gives an error everyone you try run it
Sent from my C6603 using xda premium
It won't work more than likely because it is based on the Nexus 4 hardware.
xl VipeR lx said:
Tried it. It doesn't work. Gives an error everyone you try run it
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
No error on mine(stock rom). However not really good at adjusting the screen color.
Adjusted as per image. Picture shown the with and without.
argh2000 said:
No error on mine(stock rom). However not really good at adjusting the screen color.
Adjusted as per image. Picture shown the with and without.
Click to expand...
Click to collapse
If you just want to deal with the view angle problem, set the system brightness higher (80% or higher), and set the brightness of the screen adjuster to 50%~70%, nothing else. Then the view angle will be amazing, but you will also find very little blue tint when displaying white color
sillypilot said:
If you just want to deal with the view angle problem, set the system brightness higher (80% or higher), and set the brightness of the screen adjuster to 50%~70%, nothing else. Then the view angle will be amazing, but you will also find very little blue tint when displaying white color
Click to expand...
Click to collapse
done, thank you. The angle view does seems to be better.
sillypilot said:
If you just want to deal with the view angle problem, set the system brightness higher (80% or higher), and set the brightness of the screen adjuster to 50%~70%, nothing else. Then the view angle will be amazing, but you will also find very little blue tint when displaying white color
Click to expand...
Click to collapse
Wow, call it placebo or whatnot, but it seems as though it helps to some extent! (maybe it's just me) O_O!
sillypilot said:
If you just want to deal with the view angle problem, set the system brightness higher (80% or higher), and set the brightness of the screen adjuster to 50%~70%, nothing else. Then the view angle will be amazing, but you will also find very little blue tint when displaying white color
Click to expand...
Click to collapse
yep that helps to a certain extent thanks for finding,,