My Pixel flickering at low brightness - Google Pixel Questions & Answers

My device has problems flashing the screen when the brightness is low, specifically about 40%. This is very uncomfortable when used at night. I'm not sure when it started but probably when upgrading to the Q. version. Does anyone have a fix for this problem? I plan to downgrade to the P version.
I have used the Oled saver app on CH Play but it is quite good but I do not like it working by pushing the brightness to the maximum and then overlaying another layer.

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[Q] Brightness changes (even though auto-brightness is off)

Hi all
I am having a strange issue with my Nexus 5, so I was wondering if anyone else has experienced this:
Auto-brightness is off, brightness is set to maximum. Every now and then, as I am using the phone, the brightness would change. It would go slightly darker, and then sometimes after some time (minutes) slightly brighter again (back to maximum). When this happens, the actual brightness settings slider does not change, it's always saying 100%. I've tried to notice some pattern in the occurrences of this issue, but so far cannot identify any steps to reproduce it. It is easily spotted when the screen has a big area of a solid colour, e.g. on a web-page's white space. So most often I see it while scrolling a news website. Note that during these brightness changes, my environment's lightning does not change (auto-brightness is off anyway, so this should not matter).
I don't even know if this could be down to a software or hardware issue.
So, anyone had similar problems?
Thanks,
Nik
It's throttling (overheating)
Found a related thread
Thanks supersain08 for your answer. Now using this term, I found this thread:
http://forum.xda-developers.com/showthread.php?t=2516915
sovata said:
Thanks supersain08 for your answer. Now using this term, I found this thread:
http://forum.xda-developers.com/showthread.php?t=2516915
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Click to collapse
How can you use the brightness at maximum on this phone? This phone has one of the brightest displays I've ever seen. At 30% or so it's brighter than most phones on full.
Synyster06Gates said:
How can you use the brightness at maximum on this phone? This phone has one of the brightest displays I've ever seen. At 30% or so it's brighter than most phones on full.
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Well I think that's beside the point, but let's say it's a personal preference.
And also it is possible that one would like to have a 100% brightness in light/sunny conditions, so then this issue could become relevant for anyone.
Last time I used 100% brightness on a phone screen was on the first days of my gnex.
Displays are in indoor situation much too bright on 100%, brigther doesn't look better all the time. I am going with Auto-Brightness (to have it at 100% in outdoor situations) but it is still to bright in low light situations. I have to wait for a customrom to adjust this like I did with the gnex.
Can not understand how people can use it at 100% all the time.
Why do you feel it's necessary to argue whether 100% brightness is useful or not?
That's not the point of the original question.
supersain08 said:
It's throttling (overheating)
Click to expand...
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I've been having the same issue; glad to know it isn't a defect, and that it's supposed to do that. Thanks for the information

Do any custom ROMs/Kernels allow you to have full control over screen brightness?

Regardless of ambient light, is there a way to set full brightness on the S6?
Running the stock ROM/kernel, even on full britghtness, the screen can go brighter unless the light sensor detects a high ambient light. I am wondering if its possible to change this.
Currently means PWM is still active on the screen even on full brightness. Same with the note 4 but this was not the case with previous samsung devices. PWM on full brightness is a deal breaker for me so I need to know now or this phone is being sold.
I think it's not really advisable to keep the screen on "extended brightness" mode for longer periods of time, because AMOLED panels wear out over time and this would be a definite way to make it wear out faster. Also it generates a lot of heat. There's a reason why Samsung implemented this adaptive mechanism.
mindfever91 said:
I think it's not really advisable to keep the screen on "extended brightness" mode for longer periods of time, because AMOLED panels wear out over time and this would be a definite way to make it wear out faster. Also it generates a lot of heat. There's a reason why Samsung implemented this adaptive mechanism.
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Thankyou for replying but you did not answer the question at all. I specifically stated this is a deal breaker for me, and that it means that I have to sell this $1000 phone for great effort at a reduced price because of it.
If something is this important to me then I clearly do not care about wearing it out over time. My galaxy s1+s2 has been running on modified AMOLED gamma values for 6 years and they are still fine so I dont care if the displays wears out in 10 years time.
I cannot use the phone becuase the PWM effect means the screen flickers like crazy. It gives me a headache after 1 minute of use. The phone is worthless to me in this state. If i can increase the brightness to full hopefuly the PWM effect stops and I can use a screen filter to lower the brightness, so it will not wear our the display as well.
Lastly why was this moved to Help and Troubleshooting, it is a very important question about the phone. All previous SGS phones have been fine, this is a game changer for the worst.
Yuge said:
Thankyou for replying but you did not answer the question at all. I specifically stated this is a deal breaker for me, and that it means that I have to sell this $1000 phone for great effort at a reduced price because of it.
If something is this important to me then I clearly do not care about wearing it out over time. My galaxy s1+s2 has been running on modified AMOLED gamma values for 6 years and they are still fine so I dont care if the displays wears out in 10 years time.
I cannot use the phone becuase the PWM effect means the screen flickers like crazy. It gives me a headache after 1 minute of use. The phone is worthless to me in this state. If i can increase the brightness to full hopefuly the PWM effect stops and I can use a screen filter to lower the brightness, so it will not wear our the display as well.
Lastly why was this moved to Help and Troubleshooting, it is a very important question about the phone. All previous SGS phones have been fine, this is a game changer for the worst.
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Click to collapse
Not really sure where the issue is at, are you stating that when the brightness is reduced you can visibly see the phone flicker? I use an app called Velis Auto Brightness, it gives you way more customization to the brightness level. I like it because it mathematically calculates based off the luminescence (in the environment) of how bright the display should be to show accurate color perception, rather than focusing on batter life as much.
The extra brightness mode on the phone is just a high contrast feature, I haven't found a way to force it on as of yet. I know the phone goes up to 700 nits in sunlight, but the biggest difference is the contrast feature on it.
Brittany_Menton said:
Not really sure where the issue is at, are you stating that when the brightness is reduced you can visibly see the phone flicker? I use an app called Velis Auto Brightness, it gives you way more customization to the brightness level. I like it because it mathematically calculates based off the luminescence (in the environment) of how bright the display should be to show accurate color perception, rather than focusing on batter life as much.
The extra brightness mode on the phone is just a high contrast feature, I haven't found a way to force it on as of yet. I know the phone goes up to 700 nits in sunlight, but the biggest difference is the contrast feature on it.
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Click to collapse
I can see the phone flicker even when the brightness is on max setting, because it is not truly the the max brightness of the screen hardware. All the galaxy phones after the s2 did this, except when you turned them to max they stopped flickering. The s6 is the first device that does not allow you manual control over brightness, so I just want to know if custom roms have done this.
IF you don't know what I mean this is how they flicker.
https://www.youtube.com/watch?v=D2f0TZtpRA4
Also you are wrong that the extra brightness is just contrast, it increase the lumens as well as reduces or stops the flicker PWM effect. This is how phones using PWM reduce brightness, by making the screen flicker on and off, whereas in phones like the S2 the actual display dimmed. Some people can see this and are sensitive to it, some people are sensitive to to it but they don't know it, and some people dont see it and aren't affected by it.
But it doesn't look like anyone has made a Kernel that allows for full control over the AMOLED in the S6 so I plan on selling the phone soon.
Lastly I hope someone moves this to a more appropriate section where a DEV can see it, not the basic QA section like how do i change wallpaper.
Yuge said:
I can see the phone flicker even when the brightness is on max setting, because it is not truly the the max brightness of the screen hardware. All the galaxy phones after the s2 did this, except when you turned them to max they stopped flickering. The s6 is the first device that does not allow you manual control over brightness, so I just want to know if custom roms have done this.
IF you don't know what I mean this is how they flicker.
https://www.youtube.com/watch?v=D2f0TZtpRA4
Also you are wrong that the extra brightness is just contrast, it increase the lumens as well as reduces or stops the flicker PWM effect. This is how phones using PWM reduce brightness, by making the screen flicker on and off, whereas in phones like the S2 the actual display dimmed. Some people can see this and are sensitive to it, some people are sensitive to to it but they don't know it, and some people dont see it and aren't affected by it.
But it doesn't look like anyone has made a Kernel that allows for full control over the AMOLED in the S6 so I plan on selling the phone soon.
Lastly I hope someone moves this to a more appropriate section where a DEV can see it, not the basic QA section like how do i change wallpaper.
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Click to collapse
I really don't see the problem. All of the phones today flicker, that's how they show images on the screen. You're not going to find custom roms on this device because AOSP is not working on the phone yet, so if its a deal breaker go ahead and return it and get a new phone.
Yuge said:
I can see the phone flicker even when the brightness is on max setting, because it is not truly the the max brightness of the screen hardware. All the galaxy phones after the s2 did this, except when you turned them to max they stopped flickering. The s6 is the first device that does not allow you manual control over brightness, so I just want to know if custom roms have done this.
IF you don't know what I mean this is how they flicker.
https://www.youtube.com/watch?v=D2f0TZtpRA4
Also you are wrong that the extra brightness is just contrast, it increase the lumens as well as reduces or stops the flicker PWM effect. This is how phones using PWM reduce brightness, by making the screen flicker on and off, whereas in phones like the S2 the actual display dimmed. Some people can see this and are sensitive to it, some people are sensitive to to it but they don't know it, and some people dont see it and aren't affected by it.
But it doesn't look like anyone has made a Kernel that allows for full control over the AMOLED in the S6 so I plan on selling the phone soon.
Lastly I hope someone moves this to a more appropriate section where a DEV can see it, not the basic QA section like how do i change wallpaper.
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Click to collapse
Questions do not belong into Development. It will be clear once you read the respective section rules.. I'm afraid that you'll have to live with the thread in Q&A

Horrible Auto-Brightness

I was really hoping OnePlus has resolved this issue, it did it on the 6, the regular 6T and the McLaren. Anyone else experiences this? Where the phone just won't adjust? For example you walk outside and it takes it almost a couple min to kick the brightness into full gear. Another example is let's say you're laying in bed in the dark and all of the sudden it kicks it into full brightness and then slowly goes back to a more comfortable one. My S10+ never did such things, nor did it have problems quickly adjusting, if it did it was instant.
Yeah, I've noticed this as well. It's annoying.
Sent from my GM1913 using Tapatalk
yes, it's horrible. I have to manually adjust brightness now
Yes! It's terrible
Sometimes it does adjust but does the EXACT opposite of what it should.
Go into bright light and it drops it to minimum brightness or blind me when it's dark
Would be nice if there is a way to fix this, or adjust. I'm looking at returning the phone, I couldn't stand that on the 6T.
Turn on adaptive brightness and change it whenever you want, it will learn over time. Mine did since I've had it since launch and it was awful, but now works great.
Root, Lux, done :good:
Anyone know where the proximity/light sensor is? Not sure where it is but the phone screen does turn off when you put it neae your face during a call.
I have the same issue and just like you I was hopong they fixed it since my last OP phone was the OP6. Can't believe they haven't fixed it in over a year. This is my only con about this phone but it is almost a deal breaker, yeah fingerprint sensor is incredibly fast compared to my S10+ but that doesn't matter if I have to do the extra step of manually adjust brightness every time I unlock the phone
Android Pie's adaptive brightness comes with auto-learn feature (which I hope was not disabled by OnePlus devs). So while having adaptive brightness enabled simply adjust brightness manually every time you want it to be different. It'll learn and improve over time.
Pfeffernuss said:
Root, Lux, done :good:
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Click to collapse
Do You mean this one?
https://play.google.com/store/apps/details?id=com.vito.lux
C3C076 said:
Android Pie's adaptive brightness comes with auto-learn feature (which I hope was not disabled by OnePlus devs). So while having adaptive brightness enabled simply adjust brightness manually every time you want it to be different. It'll learn and improve over time.
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Click to collapse
Knowing OnePlus they probably removed it haha
Pfeffernuss said:
Root, Lux, done :good:
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Click to collapse
Lux was amazing before Android had native adaptive brightness. It's ancient now. Hasn't been updated in over 3 years because it's obsolete (sadly). I wouldn't use this any more.
News flash people. Auto brightness is a horrible feature in general on any phone. Especially when you can have full control over the brightness level from the quick settings pulldown.
338lm said:
Lux was amazing before Android had native adaptive brightness. It's ancient now. Hasn't been updated in over 3 years because it's obsolete (sadly). I wouldn't use this any more.
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Hahaha sure. Because of a full wipe "had to" use the stock automatic brightness for a few hours. Well, that was a nice heads up.
Adaptive brightness is completely useless. But, to each his own. Now fully enjoying my custom Lux setup again.
Anyone confirms the adaptive brightness work well after several days? I must use Lux because of this terrible auto brightness on Oneplus. LG V40 has very good auto brightness.
starrynighthn said:
Anyone confirms the adaptive brightness work well after several days? I must use Lux because of this terrible auto brightness on Oneplus. LG V40 has very good auto brightness.
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Click to collapse
For me it works pretty good after using the phone for a couple of days. There are still minor adjustments to do, especially when going from bright sun into a dark room (for me the system sets the brightness too high, but nevertheless it adjusts pretty well and goes very low).
Using this accessibility one handed menu makes things a bit easier
it takes so long, usually i click the auto brightness icon twice to make it work
It seems a little slow catching up...

Can Android / Pixel 3A do this?

Hi,
I am interested in getting the Pixel 3a, however I see people complain about the outdoor viewing experience being sub-par compared to any other phones on the market.
My previous phone also featured an AMOLED with a screen brightness topping ~297 to 300 nits based on the review. As is, it was hard to read the screen outside on a sunny day.
However, what the phone was able to do, is play with the contrast (based on the brightness setting level and ambient light sensor), to make the screen more visible (at the cost of washed out colors). Something that helped a lot, and actually helps a lot (and help save battery if you reduce the brightness, if you are ok with the contrast adjustment)
I was wondering if Pixel 3a has this feature?
The ExperiementalX kernel has a High Brightness mode. It really does work and it is probably about 20% brighter than just turning the phone to 100% brightness.
And, EX Kernel has color profile adjustments! The stock color profile on my P3A was way too yellow and warm for me. I almost returned it. But now with EX I can have an accurate color profile and extra brightness as mentioned above.
I've had a different experience. I do have ElementalX installed (bought the ELX Manager years ago and highly recommend it); however, haven't felt the need to tweak the brightness--color, yes.. Unless it's on 100%, it is nearly impossible to see in the sun (I live in south Florida). Once turned too 100%, it's quite bright--enough that I can see everything even wearing sunglasses. At 100%, my former N5X was impossible to see outside even though half way across the brightness slide was much brighter than same on 3a. Son went from a N6P and expressed the same--also lives in Florida.

DC dimming

I am interested in getting either this phone or the regular one plus 7, but I have horrible time using a oled screen due to pwm. I suffer from severe headaches and eye strain.
So Im wondering if there is anyone else out there that suffers like I do, is using this phone and does dc dimming actually help?
Please if you dont know what pwm is or if it's not a problem for you Dont Comment.
I appreciate any help you can give.
Thank you!
I wonder if the 90Hz refresh would help....
I don't have that issue while using dc dimming but if i turn it off, after about 5 min i do notice my eyes hurting and stuff. DC dimming only works when the brightness is very low (i believe)
Hi, I know the thread is old but I wanted to share my views about this topic.
I am one of the few people who are sensitive to PWM flicker used in OLEDs. Before I switched to OP7 Pro, I had OP3. OP3 display destroyed my eyes and i came to know that PWM was the cause of my eye discomfort and headaches.
I switched to OP7 Pro as it had DC dimming which reduces the discomfort to PWM sensitive users. And to a huge extent this has helped me with the discomfort. But I still get headaches after prolonged viewing of the screen so I take frequent breaks and avoid extensive reading on the phone.
I have done some research about OP7 Pro display and turns out that PWM frequency is around 350hz (the more the better) when the screen is kept at 90Hz refresh rate and around 150hz PWM frequency at 60 Hz refresh rate. SO it is advised to keep display at 90Hz. All other phones have roughly 250Hz PWM frequency. Also, our phone’s display uses PWM when brightness drops below 50% which is really good as some other OEMS use PWM brightness control below 95% display brightness. So I keep the DC dimming on and use the phone at low brightness. I also use an app called OLED saver though I dont know whether it is redundant as it does same thing as DC dimming.
Recently I started noticing something after upgrading to OOS Android 10. I noticed that DC dimming implementation is different on OOS android 10 than on OOS android 9. I started getting headaches and eye discomfort on OOS android 10. I noticed that the PWM flicker is much more evident on OOS 10 .I used camera pro mode on another phone and reduced the shutter speed to 1/1000th and viewed OP7P screen through it. The flicker was evident. So I reverted back to OOS 9 and the discomfort was greatly reduced. I think I will stay on OOS 9 for the future
There is one thing I am very clear about is that all the OLED screen phones nowadays use PWM brightness control and even if DC Dimming is implemented the OLED screen will still flicker slightly. And if anyone is very sensitive to PWM then buy LCD screen phones. It’s the only option
Same Problem
daninantro said:
Hi, I know the thread is old but I wanted to share my views about this topic.
I am one of the few people who are sensitive to PWM flicker used in OLEDs. Before I switched to OP7 Pro, I had OP3. OP3 display destroyed my eyes and i came to know that PWM was the cause of my eye discomfort and headaches.
I switched to OP7 Pro as it had DC dimming which reduces the discomfort to PWM sensitive users. And to a huge extent this has helped me with the discomfort. But I still get headaches after prolonged viewing of the screen so I take frequent breaks and avoid extensive reading on the phone.
I have done some research about OP7 Pro display and turns out that PWM frequency is around 350hz (the more the better) when the screen is kept at 90Hz refresh rate and around 150hz PWM frequency at 60 Hz refresh rate. SO it is advised to keep display at 90Hz. All other phones have roughly 250Hz PWM frequency. Also, our phone’s display uses PWM when brightness drops below 50% which is really good as some other OEMS use PWM brightness control below 95% display brightness. So I keep the DC dimming on and use the phone at low brightness. I also use an app called OLED saver though I dont know whether it is redundant as it does same thing as DC dimming.
Recently I started noticing something after upgrading to OOS Android 10. I noticed that DC dimming implementation is different on OOS android 10 than on OOS android 9. I started getting headaches and eye discomfort on OOS android 10. I noticed that the PWM flicker is much more evident on OOS 10 .I used camera pro mode on another phone and reduced the shutter speed to 1/1000th and viewed OP7P screen through it. The flicker was evident. So I reverted back to OOS 9 and the discomfort was greatly reduced. I think I will stay on OOS 9 for the future
There is one thing I am very clear about is that all the OLED screen phones nowadays use PWM brightness control and even if DC Dimming is implemented the OLED screen will still flicker slightly. And if anyone is very sensitive to PWM then buy LCD screen phones. It’s the only option
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Actually I am facing the same problem I can't look at the phone more than 10 minutes
and installed "OLED saver" and nothing happened the same problem
I was wondering is this a problem my eyes with all AMOLED displays or it's just Oneplus only ?

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