Develop Bugs

Help: Function Buttons Still Bright after Screen-off

I'm currently on cm72-111128.2017-NIGHTLY-Defy.
Everything works fine except that recently I notice sometimes after I turn off the screen with power button the four function buttons are still bright (technically it's three b/c the search button seemed to be broken a week ago). And that might be the reason that occasionally the battery drains too fast.
My ways to solve the issue: 1) reboot; 2) go to Device settings - Button brightness and adjust the brightness level to whatever level and then back to the previous level you've set.
I know this might be a bug. Anyone has some idea to fix it? Our hero Epsylon3 has been devoted him to porting ICS and I'm afraid he won't have much time to care CM7.

[Q] Variety of strange screen issues occuring

Apologies if this has been addressed before, but I searched and couldn't find something exactly like this...
Randomly one of 3 screen issues seems to be occuring on a daily basis:
1) Auto-Rotate stops working. Cannot get screen to rotate without reset (Yes, I've made sure auto-rotate is on in settings)
2) Screen will not Auto-Off. Even if I change settings to 15 secs, screen will not turn itself off. I have to manually turn it off. And, if I receive a text or any kind of notification it will light up again and stay on indefinitely.
3) Screen will not turn back on when trying to wake up device. Hitting the home button and power button both have no effect. Although the LED is usually blinking, and it seems the phone is still on.
For all 3 of the above issues, manually pulling out the battery and reseting the phone that way seems to always work. But, this is an annoying process to have to go through on a daily basis.
Also, I've noticed that these 3 symptoms don't occur simultaneously. For example, yesterday it wouldn't auto-off, but rotation would still work.
Not running any custom ROMs either

Disable flip cover sensors, booting into TWRP without fastboot,camera apk,quickcharge

This weekend I unlocked the bootloader and installed LineageOS 14.1 (rooted) on my LG G4 / UK h815. I have a flipcover case and I want to stop the screen turning on/off when I open/close the cover. There doesn't seem to be an option within Nougat/LOS 14.1 to disable this feature. I've found a few apps that claim to disable the proximity sensor but none fixed this issue so I presume it must depend on the magnet sensor instead? Has anyone else been successful in disabling this? How did you do it?
I flashed TWRP to my recovery partition following the instructions here:
https://wiki.lineageos.org/devices/h815/install
fastboot said it flashed OK but I have not been able to enter into TWRP by doing the VOLUME DOWN + POWER BUTTON dance. All I get when doing that is the stock factory reset menus so I have only been able to boot into TWRP by using fastboot. Is there something missing from that guide or is there a better guide thats guaranteed to enable me to boot into TWRP by using the boot button trick?
I knew the LOS camera wasn't going to be as good as the stock one so I used ES File Manger to dump the camera apk from the stock rom but the apk failed to install, claiming it was corrupt. Maybe it would've worked if I dumped it using a different app or maybe its not compatible with Nougat? Can I download a working apk of the stock camera from somewhere?
Finally, does Quick Charge work under LOS? Under the stock rom it would say 'Fast charging' when I use my quick charge charger and cable but it always says 'Charging slowly' under LOS whether I use quickcharge gear or not.
Thanks

The first showstopping (really annoying) bug I've come across with LOS 14.1 is that the screen randomly goes very dim, even when the battery is fully charged, and adjusting the screen brightness slider (if you can make it out) has no effect. The only fix when this happens seems to be rebooting.
I won't be putting up with that happening multiple times a day so unless someone has a fix I'll be looking for another ROM.

pfmdan said:
The first showstopping (really annoying) bug I've come across with LOS 14.1 is that the screen randomly goes very dim, even when the battery is fully charged, and adjusting the screen brightness slider (if you can make it out) has no effect. The only fix when this happens seems to be rebooting.
I won't be putting up with that happening multiple times a day so unless someone has a fix I'll be looking for another ROM.
Click to expand...
Click to collapse
Thats Live Display. Sensor is Reading Brightness and Adjust Screen brightness. Sometimes that takes 2-3 Sec.
With case You should disable it in Options otherwise you will deal with it most everytime.
Next:
Did you know what you are doing? Stock camera on custom rom? really?!! With LOS 14 u installed a custom kernel, so stock camera isnt supported anymore. NO driver / different Driver for camera as cause. Use Google Camera or other. use Search.
next:
Quick Charge work, but it is only a flaw of los that it shows slow charging.
other suggestions would be it is a kernel setting.

Hi uweork
Sounds like I need to disable live display to avoid the dim screen problem then. The screen brightness slider shouldn't stop working though, surely?
You say I should be able fix my flipcase screen problem by disabling it in options (do you mean Settings?) but where exactly? I have tried disabling 'Flip cover' under settings but that doesn't stop the cover turning the screen on/off when I open/close the flip cover. The only solution I can think of is working out which devices (under /dev/input probably) are used for the magnet and proximity sensors then writing a script that will delete them at boot but that seems like an awful hack to me - I'm hoping there is a nicer fix.
Thanks!

pfmdan said:
Hi uweork
Sounds like I need to disable live display to avoid the dim screen problem then. The screen brightness slider shouldn't stop working though, surely?
You say I should be able fix my flipcase screen problem by disabling it in options (do you mean Settings?) but where exactly? I have tried disabling 'Flip cover' under settings but that doesn't stop the cover turning the screen on/off when I open/close the flip cover. The only solution I can think of is working out which devices (under /dev/input probably) are used for the magnet and proximity sensors then writing a script that will delete them at boot but that seems like an awful hack to me - I'm hoping there is a nicer fix.
Thanks!
Click to expand...
Click to collapse
About your Problem with Flipcase is didn´t mention a thing. so ich dont know what to do.
But live display you find in Settings-> Display (i didn´t use Los 14 so maybe someone other can be of more help here)

pfmdan said:
Hi uweork
Sounds like I need to disable live display to avoid the dim screen problem then. The screen brightness slider shouldn't stop working though, surely?
You say I should be able fix my flipcase screen problem by disabling it in options (do you mean Settings?) but where exactly? I have tried disabling 'Flip cover' under settings but that doesn't stop the cover turning the screen on/off when I open/close the flip cover. The only solution I can think of is working out which devices (under /dev/input probably) are used for the magnet and proximity sensors then writing a script that will delete them at boot but that seems like an awful hack to me - I'm hoping there is a nicer fix.
Thanks!
Click to expand...
Click to collapse
Live display is a colour temp change (basically a night mode). Sounds more like a bug that you can't change brightness manually.
As for the flip cover, why do you want to disable it fully? I don't think you can even on stock LG can you?

I've fixed my screen woes with xposed and the Magnet Sensor Control module 1.1. It only claims to support Nexus devices but it seems to work fine with the G4 too.

Screen too dim, backlight(Maybe) not working.

Hi all. I have a rather weird issue. After droping(oops) my phone, I ordered a new lcd. I shelved the phone as it was unusable until the screen arrived. When the screen arrived, I saw that the battery was dead. I charged it and changed the lcd. That's for the backstory. Fast forward to now. When I open the phone, the screen lights up at full brightness as one would expect at the android one logo. It stays there at full brightness for about 8secs But as soon as it starts loading android the screen dims to absolute dark. In the beginning I thought the phone was closing, you can't see anything... Unless you close the lights.
But even in absolutely dark room, the screen is still very dim, barely discernible. The phone works absolutely fine otherwise, touch camera sound etc. I backtracked the process and put it's original screen on, but it does the same.
I tried disabling auto brightness it does nothing. In fact, changing brightness from the slider does absolutely nothing whatsoever.
Tried calibrating the sensors from the engineering menu(not sure it was called that, the one you enter when you put numbers on the call menu) they seem to be working, but the brightness doesn't change.
Tried removing the battery for a prolonged amount of time (around 6 hours iirc). Still same.
At this point i'm thinking:
1)Software problem. I will really need to hard reset the whole thing, which i'd rather not, and hope for the best.
2)Bad screen, which doesn't explain why the previous one has the same problem, or why the screen works during the logo.
I hope I was able to give enough info. Any help would be greatly appreciated. Thanks!

Hi, I'm having almost the same issue (display very dim, but for me it is always very dim) and this manifested not after any dropping or screen replacement, I guess I just wrongly inputed a button sequence that configured the mobile in this weird status. It is really annoying as it is almost impossible to unlock sims, basically the phone is unusable, very frustrating....

Hey there, did anyone found a solution for this issue?

Has anyone solved this problem?

Have you found what was causing this?
I’ve the same issue, replaced the lcd on a xiaomi mi a1 and the backlight is present at the logo startup but completely black after that.[br]
On a dark room I can barely see the screen and all it’s working, but adaptive light button is missing, seems like the bootloader is able to use the backlight but not android itself

I have the exact same problem, i really hope someone knows a solution to this. I tried pretty much anything within my capabilities

Screen randomly turns on

Hey people!
Since the Pie update's 10.0.9.0 version I have this issue but I couldn't point my finger at what might be the issue. The problem is that the device will randomly turn the screen on and therefore it will never go to sleep, causing quick battery discharge.
I'm currently using MIUI 11 Port, but I had this issue with stock Pie as well, this is why I'm sharing this, to get an insight on what might be the issue.
What I've tried so far:
- Disabling/enabling DT2W
- Disabling/enabling turn on screen when notifications arrive
- Disabling/enabling wake screen when picked up
With all these setting that I've tried the screen still randomly turns on, even when it is sitting on the table, without any connection/notifications whatsoever. Thanks for your help in advance!