Develop Bugs

[UPDATED] Auto brightness flicker - Related to CPU load? Try different governer?

Hi all.
I'm reading a lot about 'screen flicker'. But it seems people are using this to describe a few different faults.
I've noticed that my one x backlight flickers when in auto brightness mode. But it only does it under artificial light. Under natural light it's totally fine.
If I turn off Auto brightness, it is completely fine also, regardless of what level I set the brightness to.
It's almost as if the software isn't filtering the auto brightness sensor output enough and trying to respond instantaneously to even the slightest light change, giving the impression of a flicker.
Who else has this issue specifically?
It looks to me like a software issue, but I only have 3 days left in my return for refund peiod and I'm not sure what the best option is.
Cheers.
EDIT: On to my 10th handset now with the same issue and just about ready to give up, but have noticed that the flicker seems to be worse when the CPU is coming on and off heavy load.
Can someone with Root and SETCPU installed please try different governers to see if they make any difference to this issue? I don't wan to root this phone to try it myself as I may end up returning it. Thanks!

Sentinel196 said:
Hi all.
I'm reading a lot about 'screen flicker'. But it seems people are using this to describe a few different faults.
I've noticed that my one x backlight flickers when in auto brightness mode. But it only does it under artificial light. Under natural light it's totally fine.
If I turn off Auto brightness, it is completely fine also, regardless of what level I set the brightness to.
It's almost as if the software isn't filtering the auto brightness sensor output enough and trying to respond instantaneously to even the slightest light change, giving the impression of a flicker.
Who else has this issue specifically?
It looks to me like a software issue, but I only have 3 days left in my return for refund peiod and I'm not sure what the best option is.
Cheers.
Click to expand...
Click to collapse
Oh well return it, and buy a new one thats probably the best option, i ordered mine yesterday, and ill do the same in 2 weeks if it have issues

Yeah I'm thinking that might be the best option. It's just that it seems to be a Software issue to me.
Anyone upgraded to 1.28 and seen this specific problem (not the screen jumping and flickering pixels) go away?

Sentinel196 said:
Yeah I'm thinking that might be the best option. It's just that it seems to be a Software issue to me.
Anyone upgraded to 1.28 and seen this specific problem (not the screen jumping and flickering pixels) go away?
Click to expand...
Click to collapse
I've upgraded to 1.28 and still have the flickering problem. I would love to be able to believe its software and its going to get fixed with an OTA, but at the moment everyone is simply uncertain as to what the future holds.

HTC advices anyone with a flickering screen to go to your carrier and ask for a replacement
Sent from my Desire HD using xda premium

On to my 10th handset with auto-brightness flicker now. At what point should i jsut give up? lol
It seems to be somehow related to CPU load also as I'm noticing the flicker is far worse when the cpu is changing power states.
Can someone with root try a different governer for the CPU and see if that changes the flicker at all?

BUMP. I'd be really great if someone rooted could test this theory!

..
I really cant help but ill tell my experience with my onex for the past two or three weeks.
I had the flickering screen twice,
1. random on the notification bar.
2. I was taking photos and got the CPU loaded because I was shooting too many pics. the bottom side of the screen was flickering.
anyway, I notice that the flickering only happend when the auto screen rotate is enabled.

Thanks for the reply, but I think you're talking about a different flicker. I'm talking about the back-light flicker when Auto Brightness is enabled. Not the LCD panel flicker.

Auto rotation bug

Hi guys
Im very happy so far with the Note2 I think when you get used to the size is the best android phone (not for long I know )
However I can't strees how annoyed I am with the Autorotate BUG
every other day i need to restart the phone because it would not rotate.
does any one know a way to fix , or have a better solution than restart the phone?
Many thanks to all who read this

Um..disable Smart Rotation in Display Settings, and Uncheck and Recheck Auto-rotate Screen, Make sure Auto-rotate is enabled in your Notifications Area. I had this bug in very Galaxy S phone so far, guess its Android's way of saying Root! :laugh:

arjun90 said:
Um..disable Smart Rotation in Display Settings, and Uncheck and Recheck Auto-rotate Screen, Make sure Auto-rotate is enabled in your Notifications Area. I had this bug in very Galaxy S phone so far, guess its Android's way of saying Root! :laugh:
Click to expand...
Click to collapse
How does rooting solve this issue?
I have a similar issue but it rotates when I place the phone down to a flat desk or surface.

i'm on Monxdified rom previously & rooted ..
the issue still persists ... so root wont solve the issue

That confirms it is indeed, an Android bug, nothing you can do about it unless you e-mail Samsung and Google.

What bug is this? I haven't had it, or haven't noticed it yet. I use smart stay, but not smart rotation. How can I reproduce this bug?

Please read forum rules before posting
Questions go in Q&A
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator

Dear moderator please excuse me for that ...
and thanks for moving the post to the relevant section.
My GT - N7105 (i like to add the preceding GT thinghy lol)
I don't think is a Android problem of all my different android devices this is the one giving me trouble
is nothing to do with root, my phone is rooted and im using this [GT-N7105]N7105XXDLL4 deodexed Rom V1.1 [4.1.2]
I was not sure if is a problem of the ROM itself or in general that way i put in there.. is anyone having that trouble?
thanks

Hey guys!
I have exactly the same problem with my N7100 running the N7100XXDMC3. The issue came up the day after I bought my phone. I've rooted it, flashed the last firmware and did a format system and wipe cache, data foactory and dalvik cache. The bug still persists.
I've written an email to Samsung they told me to do the update and wipe the datas (What I've already done). They told me if the bug is still present to bring the phone back.
Have you resolved the bug ? Please help me because it's very annoying :/

Mine does the same and I have exhanged one unit because of it and still happens its weird wished samsung would fix it. Only seems to happen when I watch a video for long period of times. Dont have smart rotation enabled either

I've got the solution ! Well it's not the solution but a solution. Download the app rotation lock adaptive. It fixes the bug and even allows to get a total rotation. I bought the app to thank the developer but a free version also exists.

Auto rotation
HI
Just reset the phone and now it works fine. Thanks.

Aubrey said:
HI
Just reset the phone and now it works fine. Thanks.
Click to expand...
Click to collapse
Reset the phone always works...and so does reboot the phone...the bug returns in a few days. am on the most recent ME1 update for the N7100 but the issue persists...its not an issue with the launcher, root orkernel related...I tried all the combinations ...

I noticed this after updating to 4.1.2.
Looking around the web this update seems to be the culprit. Mine gets stuck in landscape mode every two days or so, however launching the stock dialer fix the issue.

My fix to the problem
chongox said:
Hi guys
Im very happy so far with the Note2 I think when you get used to the size is the best android phone (not for long I know )
However I can't strees how annoyed I am with the Autorotate BUG
every other day i need to restart the phone because it would not rotate.
does any one know a way to fix , or have a better solution than restart the phone?
Many thanks to all who read this
Click to expand...
Click to collapse
I have had the same problem on my N7105 since the 4.1.2 android update.
I realised that the bug occurs only when brightness is set to manual.
I did the following to fix it:
1. I installed Velis Auto Brightness app
2. I run the app setup wizard with default options
3. I set the note 2 brightness to auto (this has no effect anyway because Velis override it)
4. I restarted the phone
5. I selected my preferred auto brightness profile through Velis
My phone's auto rotate now works perfectly!
I hope this works for you as well!

g Pad 2 8.0 question on screen brightness

Hey guys i know i own the gpad 2 8.0 lte but i saw other threads say post the question in here so here it goes.
Now on my tablet just bought it a couple weeks ago and ill have the screen brightness set to 40% then randomly when i go to use it ill notice its at 100% brightness. Today i set it to 40% brightness and restarted the tablet and then it showed back at 100%. I then set to 40% again and restarted and it again changed to 100% brightness.
So my question is anyone with this tablet have same issue and or anyone have any idea what the problem would be?
Just a software bug or something? I really dont want to ship this back to get another one but if its hardware then i will.
Thanks in advance .

I don't have your device but you could try Lux Lite in the Play Store.
Just be aware that apps that implement screen filters, as Lux does, can sometimes interfere with installing / updating apps, as in you might start having trouble clicking OK to confirm manually installing an app or updating am Xposed module. Usually a reboot will fix that for a while.

roirraW "edor" ehT said:
I don't have your device but you could try Lux Lite in the Play Store.
Just be aware that apps that implement screen filters, as Lux does, can sometimes interfere with installing / updating apps, as in you might start having trouble clicking OK to confirm manually installing an app or updating am Xposed module. Usually a reboot will fix that for a while.
Click to expand...
Click to collapse
Thanks i tried this however didnt help. I contacted lg support and first was told to uncheck auto brightness i informed him there is no auto brightness on this tablet so he put me on hold came back and told me that its a common issue with the tablet and a new firmware is being worked on and it will solve the issue but he didn't know when or how long it was going to take to be released.
Not sure what to think but hopefully he is correct and that its sooner then later.

raceday16 said:
Thanks i tried this however didnt help. I contacted lg support and first was told to uncheck auto brightness i informed him there is no auto brightness on this tablet so he put me on hold came back and told me that its a common issue with the tablet and a new firmware is being worked on and it will solve the issue but he didn't know when or how long it was going to take to be released.
Not sure what to think but hopefully he is correct and that its sooner then later.
Click to expand...
Click to collapse
I hope so too, and that it wasn't just run-around. Good luck!

Problems with screen brightness, LED notifications, Xprivacy / slowness

So I seem to have a whole bunch of problems with my D851, and am curious if others have the same problems and know of fixes. Mine has 20g (stock Lollipop) installed, and is rooted.
Main problem: enabling Xprivacy makes this phone become significantly slower. The settings menu crawls with Xprivacy turned on. Anyone else experience this?
Auto brightness is *way* too dim to use. Surely, I must not be the only person experiencing this? I see a few people mention it in passing, but it doesn't seem to be an big deal. Are people not using auto brightness? Or do most folks not have this issue? All other devices I have with Lollipop allow a brightness range if set on auto. This one doesn't ? Can I get this feature somehow?
Even when I set the brightness manually, it keeps getting reset to 100% some half the times it wakes up from sleep. Anyone else experiencing this? Anyone know of a fix?
Also, the display off time never gets set. I set it to 30sec or 1min, and it always gets reset two 2 min.
The notification LED is virtually useless. It blinks once in like 20 seconds when I get an email (gmail app). I rely on this. Is there a fix to get it to blink every second or 2 seconds? Light manager didn't work.
What I don't understand is, since I experienced all these issue on pretty much a phone out of the box + rooted, I'm surprised they don't seem to be common problems.
Thanks in advance.

fivemill said:
So I seem to have a whole bunch of problems with my D851, and am curious if others have the same problems and know of fixes. Mine has 20g (stock Lollipop) installed, and is rooted.
Main problem: enabling Xprivacy makes this phone become significantly slower. The settings menu crawls with Xprivacy turned on. Anyone else experience this?
Auto brightness is *way* too dim to use. Surely, I must not be the only person experiencing this? I see a few people mention it in passing, but it doesn't seem to be an big deal. Are people not using auto brightness? Or do most folks not have this issue? All other devices I have with Lollipop allow a brightness range if set on auto. This one doesn't ? Can I get this feature somehow?
Even when I set the brightness manually, it keeps getting reset to 100% some half the times it wakes up from sleep. Anyone else experiencing this? Anyone know of a fix?
Also, the display off time never gets set. I set it to 30sec or 1min, and it always gets reset two 2 min.
The notification LED is virtually useless. It blinks once in like 20 seconds when I get an email (gmail app). I rely on this. Is there a fix to get it to blink every second or 2 seconds? Light manager didn't work.
What I don't understand is, since I experienced all these issue on pretty much a phone out of the box + rooted, I'm surprised they don't seem to be common problems.
Thanks in advance.
Click to expand...
Click to collapse
I think maybe you got a dud. Try flashing a rom and see if problems stop,if they don't then get another phone through warranty

Still_living714 said:
I think maybe you got a dud. Try flashing a rom and see if problems stop,if they don't then get another phone through warranty
Click to expand...
Click to collapse
Thanks, I think that was a part of it, but not all of it. I tried flashing stock on a different unit, and I found that the brightness issue was largely (but not fully) better, and the display settings not getting set issue went away. The Xprivacy and LED notification issues remain, and will occur on all units as far as I can tell. I haven't seen anything here that contradicts that info.

fivemill said:
Thanks, I think that was a part of it, but not all of it. I tried flashing stock on a different unit, and I found that the brightness issue was largely (but not fully) better, and the display settings not getting set issue went away. The Xprivacy and LED notification issues remain, and will occur on all units as far as I can tell. I haven't seen anything here that contradicts that info.
Click to expand...
Click to collapse
I have xprivacy and my phone is still very smooth plus my LED works just fine. I even changed the colors

Still_living714 said:
I have xprivacy and my phone is still very smooth plus my LED works just fine. I even changed the colors
Click to expand...
Click to collapse
Thanks a bunch for the info, this is good to know, and good to hear from another D851 user. The Xprivacy issue may be less easy to measure. The LED issue may be more objective. I have no trouble with changing LED colors. It's the blink rate that's at issue. Are you able to get it to blink say, twice per second, or even once per second when you get new email in your gmail app if you use that? Are you using any kind of an LED app?
Also, are you running Lollipop? Stock? Rooted? Thanks.

fivemill said:
Thanks a bunch for the info, this is good to know, and good to hear from another D851 user. The Xprivacy issue may be less easy to measure. The LED issue may be more objective. I have no trouble with changing LED colors. It's the blink rate that's at issue. Are you able to get it to blink say, twice per second, or even once per second when you get new email in your gmail app if you use that? Are you using any kind of an LED app?
Also, are you running Lollipop? Stock? Rooted? Thanks.
Click to expand...
Click to collapse
I'm always rooted lol I'm running fulmics 5.0 and in the settings it gives you the option of length and speed of the LED. I highly recommend that rom if you want to try out marshmallow.

Still_living714 said:
I'm always rooted lol I'm running fulmics 5.0 and in the settings it gives you the option of length and speed of the LED. I highly recommend that rom if you want to try out marshmallow.
Click to expand...
Click to collapse
Very good to know again, thanks for the recommendation! And the LED options are an additional reason. I'll try out fulmics soon.

Auto brightness bug

When I'm in a very bright environment (eg outdoors, sunny day), I can't manually adjust the brightness if auto brightness is on. But I can do it if the brightness slider is not on "red' (if it's not too bright outside). On manual everything works ok, if it's not too bright outside everything works ok.
It wasn't like this on my S7. It bothers me when using Waze: I would like to manually override the auto brightness and adjust it by just moving the slider, not having to turn auto brightness off.
Anyone else having this problem?
Sent from my SM-G960F using Tapatalk

I am having problems with my SM-G965F. My brightness auto adjusts with auto brightness turned off! There is definitely something screwy going on with the auto brightness. After a while, it gets so I can't adjust it at all. That is, I can move the slider full left and right and nothing changes. It doesn't matter is auto brightness is turned on or not. No change.
I have done a factory reset once to clear it but the problem came back. They have this usage memory feature and that may be part of the problem. I found this post on re-calibration of the brightness sensor to be helpful:
www_megebyte_com/auto-brightness-not-working-on-galaxy-note-8-s8-plu
(as a new member of this forum, I am not allowed to post links. replace "_" with "." )
I did this and I got the display brightness back into a reasonable range. However, I can no longer turn auto brightness off at all. very weird.
raducanmihai said:
When I'm in a very bright environment (eg outdoors, sunny day), I can't manually adjust the brightness if auto brightness is on. But I can do it if the brightness slider is not on "red' (if it's not too bright outside). On manual everything works ok, if it's not too bright outside everything works ok.
It wasn't like this on my S7. It bothers me when using Waze: I would like to manually override the auto brightness and adjust it by just moving the slider, not having to turn auto brightness off.
Anyone else having this problem?
Sent from my SM-G960F using Tapatalk
Click to expand...
Click to collapse

UPDATE: Today Samsung released an update to the Samsung Experience Service that seems to have completely solved my auto-brightness issues. Prior to that, I was using Lux Lite and that was working well. If problems come back, I will use that again.
kdpainter said:
I am having problems with my SM-G965F. My brightness auto adjusts with auto brightness turned off! There is definitely something screwy going on with the auto brightness. After a while, it gets so I can't adjust it at all. That is, I can move the slider full left and right and nothing changes. It doesn't matter is auto brightness is turned on or not. No change.
I have done a factory reset once to clear it but the problem came back. They have this usage memory feature and that may be part of the problem. I found this post on re-calibration of the brightness sensor to be helpful:
www_megebyte_com/auto-brightness-not-working-on-galaxy-note-8-s8-plu
(as a new member of this forum, I am not allowed to post links. replace "_" with "." )
I did this and I got the display brightness back into a reasonable range. However, I can no longer turn auto brightness off at all. very weird.
Click to expand...
Click to collapse

kdpainter said:
UPDATE: Today Samsung released an update to the Samsung Experience Service that seems to have completely solved my auto-brightness issues. Prior to that, I was using Lux Lite and that was working well. If problems come back, I will use that again.
Click to expand...
Click to collapse
How'd you get this update? I don't see any updates with this title in the Play Store or Galaxy Apps update section... Thanks!

Nightwind Hawk said:
How'd you get this update? I don't see any updates with this title in the Play Store or Galaxy Apps update section... Thanks!
Click to expand...
Click to collapse
I got it via the notification screen. Here is a thread discussing it.
forums.androidcentral.com/samsung-galaxy-s9-s9-plus/888535-samsung-experience-update.html
(I can't post links yet)
Not sure if they are doing a slow rollout or if it is region based. There are some posters who say that when they search the galaxy store, nothing comes up. When I search it, nothing comes up. I have an international version (unlocked). This device was apparently destined to go to Thailand. But one thing is for sure, Samsung fixed the brightness bug but maybe your carrier is holding it up?

kdpainter said:
I got it via the notification screen. Here is a thread discussing it.
forums.androidcentral.com/samsung-galaxy-s9-s9-plus/888535-samsung-experience-update.html
(I can't post links yet)
Not sure if they are doing a slow rollout or if it is region based. There are some posters who say that when they search the galaxy store, nothing comes up. When I search it, nothing comes up. I have an international version (unlocked). This device was apparently destined to go to Thailand. But one thing is for sure, Samsung fixed the brightness bug but maybe your carrier is holding it up?
Click to expand...
Click to collapse
Well, it was working fine until I rebooted. Now the auto-brightness doesn't work again just like before. So, unfortunately, back to Lux Lite. I have to say, that the auto-brightness issue and the battery life of this phone suck.