What are your observations, settings, and thoughts about tweaking CM6's light sensor levels?
(Settings > CyanogenMod settings > User interface > Automatic backlight > Edit other levels...)
Observations...
I've noticed that the sensor seems to only pick up light levels only at specific intervals (raw values, not filtered)... for me that was 160 (never went lower), 640, 1280, 2600, and 10240.
When it comes to lowest level the sensor reads it isn't really that low. I can be sitting at my lightly lit room or in complete darkness and 160 is the reading I get. Also, the highest level the sensor reads isn't really that high. I can be standing outside on an overcast day or in full sunlight and 10240 is what I get.
Thoughts...
Basically, given the observed intervals above, I have been trying to find a reasonable screen brightness at each level, where the screen is bright and doesn't appear washed out, but isn't unnecessarily bright either.
What is the lowest screen brightness that looks descent when the light sensor reads 160, 640, 1280, etc?
Where I'm at...
upto 160 - 35
upto 640 - 50
upto 1280 - 75
upto 2600 - 100
upto 10240 - 125
I really would like to tweak the higher levels, but I'm having a more difficult time finding lighting that is in those ranges. I also setup the power control widget to toggle the brightness between Auto>Dim>75%>100% to cover the lower light levels not picked up (below 160) and the higher levels not picked up (above 10240).
Observations? Settings? Thoughts?
Related
Hi guys
Which preference do you use? Is automatic brightness option best for battery saving?
i remember it was an official battery saving tip for iPhone and wondered if it's the case for N1.
eh, just keep it on the lowest brightness... thats the best bet
the problem with auto-brightness is that it fluctuates a bit too much if you're in a room with localised lights and shadows... even in a seemingly bright area to your eyes, the display will go to lowest brightness... i just found it personally annoying, as it would usually fluctuate when i wasn't expecting, and to a lower brightness than i could stand... i've since stopped using it... i set my brightness manually to about 25%... for me that's a good balance between a usuable brightness for all conditions, while still giving good battery life...
I use auto brightness with locale which toggles it on and off based on my location. But even before I did that I really didn't notice to much of a difference in battery levels at the end of the day.
I just wish there were min and max settings for auto brightness. Cause I am pretty sure I have never needed the brightness turned all the way up.
i prefer auto brightness if it works. my 1st N1 had a glitch where the screen brightness used to flicker. on my 2nd N1 the auto brightness does not adjust on full scale........(if you go into 100% dark room, the brightness setting must automatically drop to 0)
I too found that the auto-brightness flickered too much. I downloaded Brightness Level off the marketplace and never looked back...
Auto-brightness fluctuates too much for my liking. So, I just keep it set to middle brightness.
the light sensor is unstable, so manually 25% all the time..
Auto brightness too dark
In my Nexus autobrightness works ok outdoors, but indoors it sets the light too dark. I wish it`d work fine because it's a waste of time adjusting it manually every time you move into different light conditions.
I've read Nexus users report different behaviours of their light sensors, maybe it is a bad quality component of the phone. Is there an app which can modify the sensibility of the light sensor? Would be great to adjust this sensibility and set brightness always to auto with a little more brightness indoors in my case.
manual, 25% - the best balance of battery and light for me.
i use about 60%. I hated the automatic brightness because it was darker than I would like most of the time.
My position is, I bought a phone that has a high resolution, so why not give it the brightness to make the color "pop" like they should.
I often use the phone to read in bed with the lights off. The screen is still way to bright even set to 0%. Anyone know how to dim it further?
Sent from my GT-I9000 using XDA App
If you're using the Aldiko ebook reader, just set the background color to black and set the text color to grey or some other dull color.
on 1% mine is very dim even in pitch black darkness, you must have sensitive eyes
I wonder if mine is behaving normally. I have set it to Auto adjust off, and slider to 0%, and it is still readable in bright light (probably daylight).
Sunglasses
Maybe you have the same problem described here?
http://forum.xda-developers.com/showthread.php?t=765569
Get the Dimmer app from the market, it drops the screen "0%" brightness from 18% default to 10% and I find it perfect.
I just tested 3 apps on the market. Dimmer is good, but quite simplistic. Varies the brightness between "10" and whatever you have it set at. Apparently Android's idea of 0% is "18".
I also tried "Brightness Level" which gives a bit more control and allows you to set 0%, 25%, 75%, 100% and Auto. 0% setting in Brightness Level appears to be the same as the level of "10" that Dimmer allows. The program gives a percentage indicator of brightness.
Brighterrific may be very marginally 'better' at dimming the screen. It allows you to set a minimum and maximum brightness. If I set it to 0% in the program and then compare, it says the brightness has been set to -3% (according to the brightness percentage indicator in "Brightness Level"). The difference between 0 and -3 isn't very visible to me, but maybe it'll save slightly more battery life. I also noticed that clicking on Dimmer won't work after setting it to a level of -3%; maybe because the program doesn't recognise a level lower than it's default lowest level of "10"?
Obviously lower levels must be possible if Dimmer indicates that it's lowest level has a value of 10; it must be possible to set it to 0 or 1 somehow. Needless to say, if anyone finds a program which can set -30% let me know
Thanks folks. I have installed Dimmer and I am happy with the screen brightness.
Sent from my GT-I9000 using XDA App
Just wondering what settings (other than default) CM7 users are using for their automatic backlight. I've been experimenting for a couple days and have settled for this... for today at least.
Light sensor filter: Enabled
Window length: 20s
Reset threshold: 800 lux
Sample interval: 2s
Screen dim level: 10
Edit other levels...
Lower 0, 50, then 100-3000, increasing by 100's (32 total levels)
Screen 10-175, increasing roughly by 10's
Allow light decrease: Enabled
Decrease hysteresis: 80%
I'm looking to get a smooth(er) transition from each level. A fading appearance rather than a "hitting a light switch" appearance.
Here's a few posts
http://forum.xda-developers.com/showpost.php?p=14387052&postcount=8450
And..
http://forum.xda-developers.com/showpost.php?p=8653968&postcount=4335
Also, here is a write up about what the settings do, just for your information
http://voidmain.se/cm/lights/
i see lot's of screen shots of the cyanogen brightness settings were the ligth sensor in at levels such as 30, and the screen level is configured to level 1 or 5.
mine, the sensor is always >200 and the screen level can't be lower than 35 (if i type 5, after clicking OK, it became 35)
is that normal? anyway to make the screen darker?
also, i assume the button light can't be changed right? because it does not change on mine at all.
Is this on CM7? There's a setting in there to set the lower limit, Screen Dim Level as far as I can remember. Its probably set to 35 hence you cannot set it any lower in levels. Set it to something lower like 1
Then go into "Edit Other Levels" and set your various levels in there. You can set the button setting to 0 for off, or 255 for on.
The Nexus One actually has 9 different levels for the light sensor, so you only need to set values for these.
10 - 160 - 225 - 320 - 640 - 1280 - 2600 - 5800 -8000
HTH.
PS this is one of the very useful options I really miss in ICS ROMS!
2nd post here:
http://androidforums.com/incredible...reen-when-coming-out-standby.html#post4393768
The ones posted before are far too dim at low light levels and are far too slow to adjust. The new ones work so well, I have removed my brightness widget.
The other settings have definitely given me the best battery life, however I wouldn't mind giving these a try for comparison. Do you have the lower (left column) values for the settings as well?
Are you using CM7 or CM9? Ive seen the same settings not work the same for both.
These are the settings I have been using for CM7. They work well for my 45 year-old eyes. As always YMMV
Moving average filter enabled
Window length: 20 s
Reset threshold: 800 lux
Sample interval: 2 s
Use custom light levels
Edit other levels...
Number of levels: 23
Sensor level
0
25
37
55
80
115
170
235
330
460
650
930
1290
1860
2610
3440
4200
4800
5350
5810
6300
7000
8010
Backlight
50
68
70
72
74
76
78
80
82
84
86
88
90
92
94
98
106
120
140
160
180
210
255
Buttons are 255 through 1st 8 levels (backlight ≤ 80)
Allow light decrease
Decrease hysteresis: 50%
The levels corresponding to the raw sensor output (10, 160, 225, 320, 640, 1280, 2600, 5800, and 8000) are all bumped up by 10 (15 for the 10) to force the lower light level. Extra levels help smooth the transitions.
If you find these to dim, bump the backlight levels below 120 up by 2 or 4. To bright, bump 'em down.
23 levels can be a PITA to set up, but it's worth it to me.
daj
Those look pretty good except for Window Length, dajmacd. If i set my phone under a lamp or walk by a window, I don't want to wait more than 5 secs for it to readjust.
Edit: OK, tried these. They work great. Thanks!
BTW, for those who don't know, the columns are reversed.
This is NOT Development
Thread Moved
The reset threshold overcomes the long window length when going from one extreme to the other. Oops on the reversed columns. I'll fix it when I get a chance.
Thanks for this detailed information.
Sent from my HTC Droid Incredible
Thanks for the information this was very helpful.
Thanks.
Thanks for the numbers. Always found the autobrightness to slow for my taste.
Yep, I use these settings....just a little bit altered to be brighter (since I live in the Arizona sun).