[Q] Screen light goes half-on randomly - Galaxy S 4 Q&A, Help & Troubleshooting

Hi,
I have a weird issue, I hope you guys can help me.
While my phone is staying idle, after a while, even when there is no notification, the screen half-lights up after a random period, and stays like that until I press the lock button.
Has anyone experienced it? What could be the issue? May there be a setting misconfiguration?
Also, may that be related to WiFi?
I'm on stock Rom with latest update.
Thanks in advance,

SoulSmasher said:
Hi,
I have a weird issue, I hope you guys can help me.
While my phone is staying idle, after a while, even when there is no notification, the screen half-lights up after a random period, and stays like that until I press the lock button.
Has anyone experienced it? What could be the issue? May there be a setting misconfiguration?
Also, may that be related to WiFi?
I'm on stock Rom with latest update.
Thanks in advance,
Click to expand...
Click to collapse
I get the same thing on stock ROM, with wifi off, bluetooth off, samsung wallpapers lock and home.

Probably a dodgy app.
Check wakelocks.
Sent from my GT-I9300 using xda app-developers app

Skander1998 said:
Probably a dodgy app.
Check wakelocks.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Where can I check the wakelocks? Do I have to dig each installed apps separately?
Edit: Will this work?
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector&hl=en

Related

Samsung galaxy s rebooting problem

Automatically rebooting problem. Please help. Tried hard reset, but no luck. Don't know when it is happening.
Sent from my GT-I9000 using XDA App
ramanadodda said:
Automatically rebooting problem. Please help. Tried hard reset, but no luck. Don't know when it is happening.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
How often is it rebooting?
Does it boot at all?
Can you reach desktop?
If not, have you flashed previously your rom?
Please supply more details.
Virnik0 said:
How often is it rebooting?
Does it boot at all?
Can you reach desktop?
If not, have you flashed previously your rom?
Please supply more details.
Click to expand...
Click to collapse
Some times once in a day, and sometimes more than a week, basically it is rebooting when I am playing games for more than 10 minutes.
As a phone it is working fine. I am still not rooted.
Build version : FROYO.DDJP6
Firmware Version : 2.2
FYI - One more thing, I bought this mobile just 20 days back. Anyway thank you for quick reply.
Twenty days i would return under warranty for a fix ..
jje
Exchange it, if you have not done any changes to rom, as this firmware has no such bug, probably its a hardware issue.
Is your cell get heat up while playing?
ramanadodda said:
Automatically rebooting problem. Please help. Tried hard reset, but no luck. Don't know when it is happening.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Sent from my GT-I9000 using XDA App
Monu123 said:
Exchange it, if you have not done any changes to rom, as this firmware has no such bug, probably its a hardware issue.
Is your cell get heat up while playing?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
yes, sometimes it heats gets heat while playing.. I am going to shop now, to replace it.
This seems to be some sort of ROM bug. Just reflash to Gingerbread, and be fine.
You can use my howto for that, for example:
http://forum.xda-developers.com/showthread.php?t=818556
Virnik0 said:
This seems to be some sort of ROM bug. Just reflash to Gingerbread, and be fine.
You can use my howto for that, for example:
http://forum.xda-developers.com/showthread.php?t=818556
Click to expand...
Click to collapse
I flashed with Gingerbread... My God.... Now the device is working like a rocket.... Thanks
ramanadodda said:
I flashed with Gingerbread... My God.... Now the device is working like a rocket.... Thanks
Click to expand...
Click to collapse
Did you found my howto working? If so, leave comment in that thread concerning little explanation of your own feelings about it (was it easy or complicated), thanks
Sent from my GT-I9000 using XDA Premium App
same
I got the same problem happens very often when im making phone calls
im on 2.3
MIUI RC6
Just restarts when im making phone calls (sometimes 2 minutes in the call sometimes 15..)
Any ideas?
slimx91 said:
I got the same problem happens very often when im making phone calls
im on 2.3
MIUI RC6
Just restarts when im making phone calls (sometimes 2 minutes in the call sometimes 15..)
Any ideas?
Click to expand...
Click to collapse
I found the issue with Advanced Task Killer. I am using Android Booster. Now it is working fine.
This has happened to me twice in 4 weeks on jvk. Talking on phone then it quickly boots up. Faster than a normal off then power on though.
Also.
Maybe why the screen goes to sleep during a call...
If you set screen off to say 10 mins, when on a call the screen stays active for duration of call except when held to ear, then screen off sensor kicks in and its working normal. Seems screen off setting also switches off phone screen at set time instead of staying active.
Sent from my GT-I9000 using XDA App
slimx91 said:
I got the same problem happens very often when im making phone calls
im on 2.3
MIUI RC6
Just restarts when im making phone calls (sometimes 2 minutes in the call sometimes 15..)
Any ideas?
Click to expand...
Click to collapse
Try flashing new CM7 SGS platypus kernel 20110425 03 whatsitsname, fixed it for me.
slimx91 said:
I got the same problem happens very often when im making phone calls
im on 2.3
MIUI RC6
Just restarts when im making phone calls (sometimes 2 minutes in the call sometimes 15..)
Any ideas?
Click to expand...
Click to collapse
flash zach's antlion kernel or tk4-glitch kernel. the 'twoface' kernel might be the problem
Mine also rebooted, but it was on 2.1. The problem was that there was a bug in samsung's code. When I tdisabled the power saving mode under Settings > Display. The phone stopped rebooting.
I have 2.2.1 now and power saving mode is enabled without any problems.

ICS LOCK/STANDBY power button doesn't turn on screen !

I recently wiped all of my phone (factory+cache) and installed the latest 4.0.3 official update from SAMSUNG.
I also enabled the FULL DISK ENCRYPTION while doing this.
I am now waiting to decrypt it to see if this problem persits if I turn the encryption off.
The problem is that if I leave my phone locked for a few hours/minutes it randomly won't turn on the screen again, when I press the power button.
A hard reboot (holding) fixes this everytime. But this is not a fix, we all know.
It never happened on Gingerbread 2.3.5.
I am beginning to suspect there's a bug in the ICS firmware, although it's 4.0.3, it could slip through.
It's hard to say what's causing the trouble. I have connected the phone to USB now. Waiting for the symptom to show again. I assume I can get a good logcat.
adb shell logcat > logcat.txt
So I'm waiting for an error / event of POWER button at this moment, and will keep logging till it produces the same error again.
Regards,
That's called the black screen of death. It's an ICS bug. For now, rebooting seems to be the only solution ice seen on xda.
Sent from my GT-I9100 using xda premium
a67543210 said:
That's called the black screen of death. It's an ICS bug. For now, rebooting seems to be the only solution ice seen on xda.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
I can't believe this ! Is this a SAMSUNG or an Android/ICS problem ?
My version is:
4.0.3
IM74K.XXLPQ
Any custom ROMs addressed this issue or how can you avoid this on ICS? Is the only solution to go back to Gingerbread ?
Hi guys, hope your well.
I am having a similar issue too. I am on Hydrogen AOKP Rom, and I get exactly the same. However, apart from just the blank screen, my phone gets extremely hot too.The only way to get it back on is to remove the battery. Very annoying!!
I cant seem to figure what it is. I have tried to search here on XDA for the resolution but to no avail. Could it be the Kernal? The Modem? Tweaking via SetCPU? or a combination of all? Atleast if I could get pointed to the right direction that'll be a start! lol
Are you guys getting the overheating problem too?
Its a bit like continual posting in the wrong forum nobody knows why ??
jje
rumz82 said:
Hi guys, hope your well.
I am having a similar issue too. I am on Hydrogen AOKP Rom, and I get exactly the same. However, apart from just the blank screen, my phone gets extremely hot too.The only way to get it back on is to remove the battery. Very annoying!!
I cant seem to figure what it is. I have tried to search here on XDA for the resolution but to no avail. Could it be the Kernal? The Modem? Tweaking via SetCPU? or a combination of all? Atleast if I could get pointed to the right direction that'll be a start! lol
Are you guys getting the overheating problem too?
Click to expand...
Click to collapse
No overheating (yet) you can help if you can keep logcatting through usb cable till it lock/standby freezes and your screen won't come on when pressing power ..
Install SDK + Drivers, write in commandprompt:
adb shell logcat > save.txt
Wait for the error / freeze where screen won't come on.
Then paste here or upload somewhere might contain a lead to a solution!
Double - sry - galaxy forgot login
It's a kernel issue. I had exactly the same problem. Flash the latest siyah kernel that should sort it out. I went through 10 different Roms till I worked it out
Sent from my GT-I9100 using XDA
thedadio said:
It's a kernel issue. I had exactly the same problem. Flash the latest siyah kernel that should sort it out. I went through 10 different Roms till I worked it out
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Nah!
It's there on all the kernels. I myself am a Siyah user.
I moved back to GB for this weird and terribly serious issue, but that time i didn't know it was a common problem.
This is ICS' best feature for sure.
I really CAN NOT believe how this issue is NOT yet known well and haven't brought in to front line. Google knows about it and yet I haven't seen any official statements about it. How ****in unbelievable or not perhaps? Google way?? Well **** it.
Utter Nonsense. What i wonder is, really, does any Android user actually use the phone but show off only??
I can almost reliably reproduce this problem.
I'm on ICS LP7 stock XEU version. When I have downloads running with Ttorrent, there's an almost 50% chance that the screen will not turn on once it goes to sleep. The phone is not frozen as my downloads continue to run; just that nothing is being shown on the display. If you hold the volume down button you will feel the phone vibrate to tell you it went into silent mode, which means the phone didn't freeze. After about a minute or so if I try again everything will work as normal, until I put the screen to sleep again.
gtcardwhere said:
I can almost reliably reproduce this problem.
I'm on ICS LP7 stock XEU version. When I have downloads running with Ttorrent, there's an almost 50% chance that the screen will not turn on once it goes to sleep. The phone is not frozen as my downloads continue to run; just that nothing is being shown on the display. If you hold the volume down button you will feel the phone vibrate to tell you it went into silent mode, which means the phone didn't freeze. After about a minute or so if I try again everything will work as normal, until I put the screen to sleep again.
Click to expand...
Click to collapse
Do the logcat as I provided the correct command to extract it to a file.
Then do your torrent thing, and make it crash- so we can debug !
Used to happen, since I installed latest hydrog3n-ICS rom (13-05) never had those again!
have you uv your phone so much?
i tried to uv my phone so much, and it can't turn on screen when i lockscreen about 1min
sunshean said:
have you uv your phone so much?
i tried to uv my phone so much, and it can't turn on screen when i lockscreen about 1min
Click to expand...
Click to collapse
uv?
ultra-violet ? is my phone in danger of skincancer ?
dezzadk said:
I recently wiped all of my phone (factory+cache) and installed the latest 4.0.3 official update from SAMSUNG.
I also enabled the FULL DISK ENCRYPTION while doing this.
I am now waiting to decrypt it to see if this problem persits if I turn the encryption off.
The problem is that if I leave my phone locked for a few hours/minutes it randomly won't turn on the screen again, when I press the power button.
A hard reboot (holding) fixes this everytime. But this is not a fix, we all know.
It never happened on Gingerbread 2.3.5.
I am beginning to suspect there's a bug in the ICS firmware, although it's 4.0.3, it could slip through.
It's hard to say what's causing the trouble. I have connected the phone to USB now. Waiting for the symptom to show again. I assume I can get a good logcat.
adb shell logcat > logcat.txt
So I'm waiting for an error / event of POWER button at this moment, and will keep logging till it produces the same error again.
Regards,
Click to expand...
Click to collapse
Hi,
It happened to me as well after the ICS update and I tried to plug the AC charger to see what happens, and surprise...the screen turned on .
It's not a fix (especially when away with no accessories) but it's better than nothing, hope this helps; also you should try plugging the USB cable. Tell me if it helps.
Thanks,
dezzadk said:
uv?
ultra-violet ? is my phone in danger of skincancer ?
Click to expand...
Click to collapse
Haaaaahahah! He means under volting. I don't know if you was serious lol but just saying. I'm on cm9 but don't have this problem :-/.
Sent from my GT-I9100 using xda premium
Yep,I mean under volting, you need to look your kernel, and I think it doesn't work fine because your kernel has under volting so much.
Sent from my GT-I9100 using Tapatalk
Reading around and installing load monitor from play store should fix this until a better solution is found
Sent from my GT-I9100 using Tapatalk 2
Best solution is to stay on GB because is more stable, until ICS gets better cooked!

Update to 4.1.2 waiting to download

Hi Guys,
I have a question about the update to version 4.1.2.
When I go to Settings > About > System update, I see that the update to 4.1.2 is found but it says that it is waiting to download but it stays like that forever and nothing happens.
Has anyone else seen such behavior? Do you know why it is happening and if it is normal?
Thanks!
Maybe a stupid question but... are you connected to WiFi when you see the message?
b00mb00mchuck said:
Maybe a stupid question but... are you connected to WiFi when you see the message?
Click to expand...
Click to collapse
Yes, of course I am
I also forgot to mention that I am fully stock, unrooted and locked.
wyvorn said:
Hi Guys,
I have a question about the update to version 4.1.2.
When I go to Settings > About > System update, I see that the update to 4.1.2 is found but it says that it is waiting to download but it stays like that forever and nothing happens.
Has anyone else seen such behavior? Do you know why it is happening and if it is normal?
Thanks!
Click to expand...
Click to collapse
Make sure you have a good WiFi connection. The WiFi in my dorm shows a good connection (String signal) but the internet can sometimes timeout easily. Make sure your connection to the internet is superb.
wyvorn said:
Yes, of course I am
I also forgot to mention that I am fully stock, unrooted and locked.
Click to expand...
Click to collapse
Taking a quick look at your wifi icon its not transferring or receiving data. No black arows inside..
Sent from my Nexus 7 using Tapatalk 2
mattrmay said:
Make sure you have a good WiFi connection. The WiFi in my dorm shows a good connection (String signal) but the internet can sometimes timeout easily. Make sure your connection to the internet is superb.
Click to expand...
Click to collapse
My connection is very good. For just in case, I put the Nexus besides the wifi router and still nothing happens.
Omar04 said:
Taking a quick look at your wifi icon its not transferring or receiving data. No black arows inside..
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Yes, I know what the arrows mean but my question is why this is happening? Is there a way for me to force the download? Or maybe I just have to wait more (it's been like this since yesterday)?
Try powering off the Nexus and then starting it up again. If that doesn't work, try using the technique to trick it into updating mentioned in this thread (yes, it's for a different situation but still worth a shot)
http://forum.xda-developers.com/showthread.php?t=1930603
Sent from my MB860 using xda app-developers app
wyvorn said:
My connection is very good. For just in case, I put the Nexus besides the wifi router and still nothing happens.
Yes, I know what the arrows mean but my question is why this is happening? Is there a way for me to force the download? Or maybe I just have to wait more (it's been like this since yesterday)?
Click to expand...
Click to collapse
Take a look at this thread:
http://forum.xda-developers.com/showthread.php?t=1934670
AnotherBill said:
Try powering off the Nexus and then starting it up again. If that doesn't work, try using the technique to trick it into updating mentioned in this thread (yes, it's for a different situation but still worth a shot)
http://forum.xda-developers.com/showthread.php?t=1930603
Sent from my MB860 using xda app-developers app
Click to expand...
Click to collapse
Hey, thanks for the suggestions. I tried powering off and on and it didn't work.
Then I tried the method to force stop the Google Services Framework and when I went to the System updates screen, I had the option to check for updates. I checked and I am back to where I was before - the update shows but is only "waiting to download"
wyvorn said:
I also forgot to mention that I am fully stock, unrooted and locked.
Click to expand...
Click to collapse
Not really a solution but why are your locked?
Sent from my Nexus 7
krelvinaz said:
Not really a solution but why are your locked?
Sent from my Nexus 7
Click to expand...
Click to collapse
probably because he isnt in to rooting?? and just wants his update. not everyone on XDA unlocks and flashes im sure.
krelvinaz said:
Not really a solution but why are your locked?
Sent from my Nexus 7
Click to expand...
Click to collapse
Well, I bought the N7 recently and I want to see how it feels without rooting and custom roms. But later on, I will most probably unlock it.
Hi everyone. I have the same problem with the download. Mine N7 is also stock. Tried the method with the framework multiple times, tried to restart, tried another internet, still no luck in downloading. Any further suggestions?
svetlio89 said:
Hi everyone. I have the same problem with the download. Mine N7 is also stock. Tried the method with the framework multiple times, tried to restart, tried another internet, still no luck in downloading. Any further suggestions?
Click to expand...
Click to collapse
Same issue here! I see the update, but it's waiting to download forever. Could this be connected to the location? Same as the the other guy I'm located in Sofia, Bulgaria.
spooooky said:
Same issue here! I see the update, but it's waiting to download forever. Could this be connected to the location? Same as the the other guy I'm located in Sofia, Bulgaria.
Click to expand...
Click to collapse
Yeah, I'm starting to think the same, as I am in Sofia too.
Anyway, I could not find a solution, so I rooted and installed CM10, so no issue for me anymore.
Another one from Sofia. Waiting to download and after some time... unable to download.....
Sent from my Nexus 7 using Tapatalk 2

My brightness slider and auto-brightness DO NOT.

And more specifically and as far as I can tell, if the phone is freshly booted then the functions listed above work. However, after several hours on I go to adjust the brightness and the screen does NOT change its brightness no matter whether i set auto-brightness or adjust it manually.
Let me preface this topic and let you all know that I still have my stock screen protectors attached and I've installed the light flow app if that matters.
Any ideas?
EDIT: I such at naming titles.
same here, just wiped. no clue what's causing it
Same for me I just noticed this. Hope its something fixable in an update.
Sent from my Nexus 4 using xda app-developers app
i don't have this problem, auto brightness and slider always work
Auto brightness doesn't work
I am having this problem too... Works for the first while, then doesnt work at all...
*** Ive commented on a logged issue with google, ISSUE 40378
https://code.google.com/p/android/i....2&colspec=ID Type Status Owner Summary Stars
I uninstalled ledblinker and it seems to solve the problem. Do you guys use lightflow? That might be the culprit
ceejay83 said:
I uninstalled ledblinker and it seems to solve the problem. Do you guys use lightflow? That might be the culprit
Click to expand...
Click to collapse
It doesn't make a difference if I use lightflow or not it just won't act right.
Sent from my Nexus 4 using xda app-developers app
Jefferyrbrown1983 said:
It doesn't make a difference if I use lightflow or not it just won't act right.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Have you tried wiping? I haven't had any issue since
Ugh never mind, brightness got stuck again.
Wow am i glad to have found this thread, i have been battling this problem since day one with this phone, and i have been trying to track it down with usb debugging but have been unsuccessful. What happens is that my screen will randomly shut off and be non responsive for 5 seconds and when i can turn the screen back on, i can no longer adjust the brightness and only a reboot will solve the issue. It also occurs when i am not using the phone so i think it is a hardware issue but i am uncertain.
Things i have tried to fix it:
Factory reset
Fastboot flash factory image
Flash cutom ROM & Kernel
Didn't realize it before but yes, my screen randomly turns off, then the brightness gets stuck. Thought it was timing out
---------- Post added at 03:52 PM ---------- Previous post was at 03:46 PM ----------
You guys use auto brightness? Maybe that might be it
This happens to me occasionally too, haven't been able to determine what triggers it. It's almost as much fun as the magical battery levels. Plugged in the other day, went from 4% to 100% in a nano second.
interesting...my auto and slider work just fine
ugh still getting this problem daily. does't matter if auto brightness is on
There is no solid way to reproduce the problem, so I am willing to bet its a hardware issue. I will be calling T-Mobile this week to replace it.
Sent from my Nexus S
Of the people who are experiencing it, how many have a notification drawer widget (Widgetsoid, Power Controls, et al?) and have a brightness toggle on it?
I've removed brightness from Widgetsoid to see if it's a conflict of some sort.
CMNein said:
Of the people who are experiencing it, how many have a notification drawer widget (Widgetsoid, Power Controls, et al?) and have a brightness toggle on it?
I've removed brightness from Widgetsoid to see if it's a conflict of some sort.
Click to expand...
Click to collapse
Yes I'm using power controls. Still does it even if I disable the brightness toggle
Hmmm...wonder if there's a submission on Gerrit, shall troll later.
Sent from my Nexus 4 using Tapatalk 2
CMNein said:
Hmmm...wonder if there's a submission on Gerrit, shall troll later.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Might be a hardware issue? If it was software I think a lot of people would be complaining about this.
Edit: ugh as I was typing this post, screen flashed and turned off with broken brightness. I just rebooted like 5 min ago too
ceejay83 said:
Might be a hardware issue? If it was software I think a lot of people would be complaining about this
Click to expand...
Click to collapse
Not sure. Here's one report on Google Code: http://code.google.com/p/android/issues/detail?id=40378
Edit: could just as easily be a OS issue, if it decides to stop polling the light sensor for some reason. Many people have the battery bug as well, which seems to stop polling the battery for some reason.

[Q] What is causing my screen wake?

Hi Guys,
I am trying to figure out what is causing my screen to turn on for 2-3 seconds every 10-15 min, to me looks random, is there any app / procedures anyone recommends to find out what is causing this?
I am on Stock 4.4.2 (Rogers-Canadian) rom however the phone is rooted.
Thank you in advance.
Raul77 said:
Hi Guys,
I am trying to figure out what is causing my screen to turn on for 2-3 seconds every 10-15 min, to me looks random, is there any app / procedures anyone recommends to find out what is causing this?
I am on Stock 4.4.2 (Rogers-Canadian) rom however the phone is rooted.
Thank you in advance.
Click to expand...
Click to collapse
Take a look at these two apps
http://forum.xda-developers.com/showthread.php?t=1179809
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector&hl=en
You can see what's causing it from those two apps. Also check in Settings -> Battery and find out which apps are using battery/awake time.
Raul77 said:
Hi Guys,
I am trying to figure out what is causing my screen to turn on for 2-3 seconds every 10-15 min, to me looks random, is there any app / procedures anyone recommends to find out what is causing this?
I am on Stock 4.4.2 (Rogers-Canadian) rom however the phone is rooted.
Thank you in advance.
Click to expand...
Click to collapse
You have to check yourself what apps you have installed recently.
Try uninstall some apps that you suspect.
BellaxMiu said:
Take a look at these two apps
http://forum.xda-developers.com/showthread.php?t=1179809
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector&hl=en
You can see what's causing it from those two apps. Also check in Settings -> Battery and find out which apps are using battery/awake time.
Click to expand...
Click to collapse
Thank you so much, the wake lock detector helped me. it was Folder Sync . cheers.

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