The purpose of this question is related to an intermittent problem that I experience on my Eonon with the Malaysk 444 rom, which results in the screen going blank. I suspect that it is "stuck" in auto brightness mode, and as a result some of the auto brightness values, for whatever reason, do not register for my device and result in a blank screen.
My temporary solution to this problem is to rekey a physical button using MTC-Keys as event 85 (event_44=85). This works to move the brightness value from 0 to 100% with a few steps in between. My results are that I go from 0% which is a blank screen, then get 25% brightness, then 50% results in a blank screen, then I see 75% and 100% as expected. Does anyone know where the predefined sequence values for event 85 are stored? I'd like to play with setting different brightness values (0-255) for the various steps to see if I can find values that work at each stage. I suspect this might fix the auto-brightness values as well.
Thanks in advance.
Hans
hans109h said:
The purpose of this question is related to an intermittent problem that I experience on my Eonon with the Malaysk 444 rom, which results in the screen going blank. I suspect that it is "stuck" in auto brightness mode, and as a result some of the auto brightness values, for whatever reason, do not register for my device and result in a blank screen.
My temporary solution to this problem is to rekey a physical button using MTC-Keys as event 85 (event_44=85). This works to move the brightness value from 0 to 100% with a few steps in between. My results are that I go from 0% which is a blank screen, then get 25% brightness, then 50% results in a blank screen, then I see 75% and 100% as expected. Does anyone know where the predefined sequence values for event 85 are stored? I'd like to play with setting different brightness values (0-255) for the various steps to see if I can find values that work at each stage. I suspect this might fix the auto-brightness values as well.
Thanks in advance.
Hans
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Click to collapse
Do you still have this problem if you temporarily turn off the CAN bus in factory settings? We noticed the same problem on devices with the factory MCU software that have random brightness levels. For us, going into the Android settings, then selecting another brightness option seems to temporarily fix the issue.
I haven't tried that yet and today I upgraded to 5.1.1 and the problem hasn't shown itself yet.
Before I upgraded I set the brightness mode to auto as a test. I discovered that my fix didn't work anyways.
Related
I bought a Tab P1010 a fortnight ago. Generally been happy with it, but I've noticed something thats begining to annoy.
Just prior to going into standby, the backlight level drops slightly before going off. That seems to be the normal way things work.
However, on mine, the level goes to that stage randomly. Touching the screen may bring it back up after 5 seconds or so, but not straight away. And it happens even when I'm scrolling the screen and there has been activity going on.
Any idea?
Or have I got a return on my hands?
do you have "auto" set on your brightness?
I find when i have brightness set to auto it can go duller or brighter seemingly at random (particularly irritating if im reading)
i mostly manage my brightness level myself
Dont know if this is related to your issue ... good luck
dingoo12 said:
do you have "auto" set on your brightness?
I find when i have brightness set to auto it can go duller or brighter seemingly at random (particularly irritating if im reading)
i mostly manage my brightness level myself
Dont know if this is related to your issue ... good luck
Click to expand...
Click to collapse
lol I feel such a fool!
I was fully aware of the auto back light setting and had already set it to the unchecked.
However at the weekend, I did a full factory reset. All settings had gone. However, it does show up how useless that setting is as the changes seem very random!
Cheers for the reminder.
Wondering if anybody else has encountered any problems with the Nook HD brightness control.
My almost new unit now will not allow me to set the brightness above about 55%. Moving the slider control over 55% results in a dim screen - and to go back to a 'bright' screen requires me to move the slider back to 0% and then increase back up again. The 55% setting looks pretty bright which makes me wonder if the hw has somehow lost the backlight calibration.
The above occurs both under stock B&N and CM10 - so I don't think it's a CM problem - likely my HW.
John.
Brightness
matthewsjl said:
Wondering if anybody else has encountered any problems with the Nook HD brightness control.
My almost new unit now will not allow me to set the brightness above about 55%. Moving the slider control over 55% results in a dim screen - and to go back to a 'bright' screen requires me to move the slider back to 0% and then increase back up again. The 55% setting looks pretty bright which makes me wonder if the hw has somehow lost the backlight calibration.
The above occurs both under stock B&N and CM10 - so I don't think it's a CM problem - likely my HW.
John.
Click to expand...
Click to collapse
I wasn't having the same issue but I was having a brightness problem on my HD today and this thread helped:
http://forum.xda-developers.com/showthread.php?p=38756161#post38756161
I flipped the bit from a 1 to a 0 and now my brightness is able to be controlled again. What was strange is that the "1" apparently represents the "auto" mode and when I went to settings, the box was not checked and not able to be toggled. So I'm guessing that something got funky and the bit flipped. The 0 certainly has fixed it though. I had to download the app for $3 to fix it but totally worth Leapinlar's efforts.
Just picked up an ME572c and I'm very impressed for the price. However I have noticed the screen brightness levels keep fluctuating as if the light sensor is constantly detecting different light levels.
Has anyone else experienced this?
madgibbon said:
Just picked up an ME572c and I'm very impressed for the price. However I have noticed the screen brightness levels keep fluctuating as if the light sensor is constantly detecting different light levels.
Has anyone else experienced this?
Click to expand...
Click to collapse
Hi,
i notice this too, but that can be related to the power saving mode. Plz turn it off and check the settings in detail. Maybe that helps.
Further inside the developer options there is another option to configure the auto brightness.
You can change the behaviour from dynamic to immediately or slow mode and active an onscreen lux, gain and brightness value display.
Btw i am not satisfied with the auto control, as for my taste the brightness is still too low in a less lighted room. Sensor is reporting 0 lux already with a brightness of 14 which would be ok for a really dark room & night but not at daytime.
What is your experience?
I tried playing with power saving mode and the auto brightness controls in developer options. While I could reduce the fluctuations, I could eliminate them completely. Unfortunately I found it too distracting and returned the device earlier today. It's a shame as everything else was quite impressive for the money.
I also found the fluctuations annoying, my solution was to turn the auto-brightness off. Honestly I dislike auto-brightness on any device, it was also one of the first things I turned off on my laptop.
I am using Lux app now and raised minimum brightness at 0 lux. Thats ok for me now.
tycoo said:
Hi,
i notice this too, but that can be related to the power saving mode. Plz turn it off and check the settings in detail. Maybe that helps.
Further inside the developer options there is another option to configure the auto brightness.
You can change the behaviour from dynamic to immediately or slow mode and active an onscreen lux, gain and brightness value display.
Btw i am not satisfied with the auto control, as for my taste the brightness is still too low in a less lighted room. Sensor is reporting 0 lux already with a brightness of 14 which would be ok for a really dark room & night but not at daytime.
What is your experience?
Click to expand...
Click to collapse
Just bumping this to confirm this works and so that others can see. I used Developer options as well (before I found this post) and noticed the instant setting works best.
One more setting to also double check... Make sure that in developer options under auto brightness that you disable allow change gain...
Even with everything disabled it appears as if something still is changing the display. I particularly see it with something like a reddit browser when I'm viewing pictures. You click the pic, it loads and displays and then 1-2 seconds later the display adjusts based upon what is being displayed. Depending upon the picture it can be pretty annoying. I may have to root and start poking around to find out what is causing this.
with the lollipop update this issue is fixed for me.
Is lollipop really solve the problem?
muiriddin said:
with the lollipop update this issue is fixed for me.
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Click to collapse
Hello!
Im on lollipop, but the problem you had, still occur at me.
Did you noticed this problem, since you on lollipop?
I have the same problem. When i read, or browsing, the brightness changes in 2-3 steps.
Recently I've had my phone display repaired and the very first thing I noticed was that the brightness on the replacement display was not working. I tried wiping data/changing ROMs and confirmed that it really is hardware related.
My solution is to use LiveDisplay Color Calibration from LOS. What is does is basically reduce the screen "brightness" by reducing the RGB values. It does a relatively good job at preventing my eyes from drying out at night.
Now, the problem is that everytime I need to increase/decrease the brightness, I need to manually go deep into Settings to adjust it. Is there any Tasker profile to let me adjust those values on the fly? Or at least to profile a low-brightness value on one tap?
I found a thread on r/tasker that is close to my problem, but isn't really doing anything. Any help would be greatly appreciated.
axljohn said:
Recently I've had my phone display repaired and the very first thing I noticed was that the brightness on the replacement display was not working. I tried wiping data/changing ROMs and confirmed that it really is hardware related.
My solution is to use LiveDisplay Color Calibration from LOS. What is does is basically reduce the screen "brightness" by reducing the RGB values. It does a relatively good job at preventing my eyes from drying out at night.
Now, the problem is that everytime I need to increase/decrease the brightness, I need to manually go deep into Settings to adjust it. Is there any Tasker profile to let me adjust those values on the fly? Or at least to profile a low-brightness value on one tap?
I found a thread on r/tasker that is close to my problem, but isn't really doing anything. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Test the sensor light under the screen
qitecko said:
Test the sensor light under the screen
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Click to collapse
I'm not sure what you meant by that but my phone doesn't have a light sensor.
Hello,
Recently got this phone and very happy with it. Only issue I have found is that the screen occasionally dims randomly, not by a lot, but noticeable when it happens.
Adaptive brightness is off. System mode is set to dynamic.
Is dynamic system mode the issue? If so which is a good adaptive battery setting which won't affect the screen brightness.
Thanks in advance
I assume its due to the changes in refresh rate. Try setting the refresh rate to a single value (120 90 or 60) and i think you wont see the transition.
Same issue and I have adaptive brightness on. You will open an app and suddenly brightness will turn all the way down. Definitely a bug.
hirshr said:
I assume its due to the changes in refresh rate. Try setting the refresh rate to a single value (120 90 or 60) and i think you wont see the transition.
Click to expand...
Click to collapse
Thanks for the suggestion. I've tried this at 90hz, for reasonable battery, but it still does it.
Same here! Locked at 90hz, so that's not the problem.
I'm having the same issue. Adaptive brightness off, fixed refresh rate. I've only noticed it when I'm outside in bright light.
same problem.
have zenfone 7 rooted. locked to 90hz. adaptive brightness switched off.
anyone found a solution or cause?
I've noticed it happens when i tilt the phone.
and also when i have an app overlaid over main screen. like YouTube vanced minimised etc.
i think phone somehow might be switching brightness between the small app at the front and the main app on the back and doing it back and forth.