Are you referring to the behavior when you scroll through a webpage and the brightness adapts and flickers depending on the color content currently being displayed?
FIX: Content Adaptive Backlight
- Thread starter xdabbeb
- Start date
yes content adaptive brightness works to make blacks look blacker since it's an LCD. they want to make it as close to amoled blacks as they can, therefore it changes the brightness in a way we can't adjust whatsoever. it has to be kernel as there's no software fix and it's not a hardware thing. nobody has made a single verizon kernel though, and i wonder why.. did LG never release source or something?
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Sent from my Verizon LG G2 using Tapatalk Pro
AllTheWay
Retired Senior Moderator
I use an app called screen filter and it does seem to help. Though it could just be a placebo effect. I will test it out for a few more days and see if the issue comes back.
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Sent from my LG-D800 using XDA Premium 4 mobile app
screen filter does sort of help because it's like placing a semi transparent image over the screen to drop brightness.. but it drops contrast too so it doesn't look too good. it still does it but you don't notice it as much.
Sent from my Verizon LG G2 using Tapatalk Pro
Sent from my Verizon LG G2 using Tapatalk Pro
Hi guys, I am also a G2 user and I doubt it is an hardware fault because at first I thought it was so I went to service centre and had my LCD change but problem still exist with brightness below 50%, above %50 I dont really see flickering except exiting an app. Hope LG can fix this bug with a new kernel version or android 4.4 update.
Hmmmm don't see this on mine. I am always at around 30 to 40 brightness. Will monitor more and report.
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Sent from my LG-D802 using XDA Premium 4 mobile app
I think all these will be resolved in KITKAT ROMs
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Sent from my LG-D802 using XDA Premium 4 mobile app
Because auto brightness works now. I uninstalled lux because LG fixed it in kitkat.
I also install kitkat on my VS980 (Verizon) ...cause I have this problem:
The light dim until 40-50% ... then from 50% til 100% stil remain unchanged, and the light on my phone is very low
Anybody still have this problem please ?
Thanks in advance
Denis
did not know about the contrast ratio on these screens. Makes sense what you are saying.
Are you sure? Because some people are saying content adaptive brightness is still there and cannot be disabled. My TV has the same thing forced in certain picture modes and it looks awful.
yes, at least for T-mo D801 variant, the 1st update completely fixed this issue.
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5I've seen a few threads/comments here about the flickering/adjusting of the backlight level at lower (less than 50%) brightness levels even though auto-brightness was off. As was suspected, it's just due to a content adaptive backlight module. It can be shut off by just running the CABLPreferences activity of the com.qualcomm.cabl app. It also looks like there is a "quality" setting in there to play with that just varies the aggressiveness of the effect.
If you don't know how to launch an activity, you can do the following:
Via ADB:
Code:adb shell "am start -a android.intent.action.MAIN -n com.qualcomm.cabl/com.qualcomm.cabl.CABLPreferences"
Via Terminal on your phone:
Code:am start -a android.intent.action.MAIN -n com.qualcomm.cabl/com.qualcomm.cabl.CABLPreferences
I haven't done any more checking, but I'm guessing this is just a flag that could be set in sys/devices/blah... by init.d script on boot as well.
If you prefer a gui, there are plenty of launchers out there that can select an activity to start. I actually had it set up as a long-press pie on LMT while I was playing with it.
It seems (on my phone, at least), that the app wasn't as good at turning it back on, but you can just clear the app data/cache on "Content Adaptive Backlight Settings" in application manager, reboot, and you'll be back to stock behavior.
Sorry I didn't post this sooner. I've been too busy playing with the G2!2
I believe the original Nexus 7 had this feature in the kernel too. However, in custom kernels you could use Trickster mod to toggle the feature off. I think the kernel devs had to expose the setting though, so maybe we'll get this taken care of if we can get a custom kernel.2Here are some build props for Qualcom devices that control the CABL
Code:ro.qualcomm.cabl=1 hw.cabl.level=Auto persist.qcom.cabl.video_only=1
By adding / editing these lines in the build.prop you should be able to adjust as noted in the lines.
And yes, it is in the kernel.
Dont know why LG has an app for it?1
I'm not sure you really want to "fix" this feature.
LCD screens (like the one in the LG G2) have inherent low contrast ratio (just 1500:1, in comparison to infinity, with AMOLEDs). In order to compensate, LCD screens use a feature called "dynamic contrast", in which the backlight dims when the screen shows darker content, in order for the perceived black levels to appear darker (and not grey). I'm not sure you want to disable this feature, because the outcome will be grey blacks.
