TF300T Bad Automatic Screen Brightness - Transformer TF300T Q&A, Help & Troubleshooting

Hey everyone,
Whenever I use automatic screen brightness the screen always seems to be very dark or on the lowest brightness setting.
Has anyone else noticed this or does anyone know of a fix for this?
Thanks
Sent from my ASUS Transformer Pad TF300T using XDA Premium HD app

Yes my screen is pretty dim when on auto. I just don't use that setting. Maybe others will have some comments.
Sent from my ASUS Transformer Pad TF300T using xda app-developers app

I am using it all the time, except the night time.
It's working flawlessly to me during the day, for example: when i am in a room and i will enter the garden, or a brighter room.. works awesome
But the level of brightness is not good during the absolute dark, i just don't like the dim, because it's loosing lot's of contrast, so i am just sliding i little bit to make it brighter.
As i said, absolutely no problem during the day, sunrise, sunset... but the dim is not good for my eyes.
EDIT: i'm on .30 FW

My screen is also too dark on auto most of the time.

I must agree. Auto dimming isn't so good. I find it easier to just leave it full blast
Sent from my ASUS Transformer Pad TF300T using xda app-developers app

funnel71 said:
I must agree. Auto dimming isn't so good. I find it easier to just leave it full blast
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
Click to expand...
Click to collapse
We should decompile framework.res and change the values for the dim...
Looking for some free time for doing the work...

dark auto brighness
I have exactly the same problem. It's definitively too dark and not working at all. If I put a lamp (bright light) on it, it will brighten completely the screen but will not go back to normal when I take the light away. I have to restart to find back this too dark screen. Please note that the pad I tried when buying in the shop at the same problem, and a friend who bought another transformer pad has this problem as well. Hard or software?

Try the Lux Auto Brightness app here. You can fully customize your auto brightness levels. Works great for me.

When you are in an average lit room, it will be on the lowest possible brightness
When it is night time it almost goes to full.
Don't use auto brightness if it bothers you.

sometimes the auto brightness gets stuck in dark setting .what i do to fix this is i just set the bright manualy to high and this turns off the automatic brightness . then i just turn on the automatic brightness and it works.

carlosraf20 said:
sometimes the auto brightness gets stuck in dark setting .what i do to fix this is i just set the bright manualy to high and this turns off the automatic brightness . then i just turn on the automatic brightness and it works.
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Click to collapse
hmmm...i'll have to try that.
90% of the time i use my tablet in my living room...and no matter what time of day, wether the sun is coming in through the back window or i am just using the lights, auto brightness is always too dim for me (except at night...then it is fine) its not a huge deal since they have the slider in the notification window.

thanks
David Dee said:
Try the Lux Auto Brightness app here. You can fully customize your auto brightness levels. Works great for me.
Click to expand...
Click to collapse
Thank you, it a great solution
http://forum.xda-developers.com/images/smilies/fingers-crossed.gif

Related

[Q] Adjusting brightness

Hi all,
Is there any way to reduce screen brightness even lower than what we could do with built-in settings? Thanks.
Sent from my Transformer TF101 using Tapatalk
Wear sunglasses?
I'd love to know too. The screen is just a touch too bright in bed at night
jimbob1971 said:
Wear sunglasses?
I'd love to know too. The screen is just a touch too bright in bed at night
Click to expand...
Click to collapse
I'd like to know this too, I have it at the lowest setting usually and it's still a little bright, I don't even need to turn it up outdoors.
On my modded galaxy s, the darky rom come with an app called "screen filter", it enable you to get your screen WAY dimmer, may be worth a look for in honeycomb, nice for froyo/gingerbread, you even have it in the task menu... my 0.02cents
I noticed that i always have to set it to the max cause it cut down on the glaze. This screen is like a mirror during the day.
http://forum.xda-developers.com/showthread.php?t=731032
try that app (requires root)
AdjBrightness doesn't work. I'm running Modaco ROM HR3, which means it's rooted, but AdjBrightness keeps saying it requires root. Thanks anyway.
Sent from my Transformer TF101 using Tapatalk
Try "Brightness level" by curvefish. I can't guarantee it will work but it works on my g tablet?
Sent from my DROIDX using Tapatalk
I don't think any apps can make it dimmer, without rooting and system access. Brightness level widget doesnt make it any dimmer (it reports the brightness level as 8%, when the system brightness bar is all the way to the left, and when set to 0% in BLW the screen doesnt change).
One of the first things that I look for before buying any device is can the screen be set to a low enough brightness. Manufactures often overlook this in their quest to make screens as bright as possible, and in one case I ended up taping a piece of plastic over the screen of an Acer netbook as a filter to get the brightness down low enough to use in a dim room. In the case of the Transformer, I could not try before I bought, but the screen does go down pretty dim.
+1 for Screen Filter. I don't have a TF yet so I haven't tried it but it works great on my SGS and doesn't require root. I suspect it may not work as well on an LCD as on my SAMOLED screen on my phone since it doesn't actually reduce the backlight, but it's still worth a try.
Thanks, screen filter works!

[app] ScreenOff

Hi guys, if you think how the power button will break sometime because it feels so fragile, maybe you want to use this app. I made this app for personal use, but I do want to share with you.
This app basically only make the screen brightness to 0 (zero), and you gotta wait for 10 seconds to let Android call the lock screen.
nb:
if you didn't wait till time out (10 secs), you are still basically locking it manually. that means you have to press the hardware button twice to wake the screen up
Is it possible to change this in a way you can control how bright the screen is? The lowest setting is '12' that i can get and even that is nearly too bright indoors for me
I havent seen an all that does that
Sent from my Transformer TF101 using Tapatalk
madpuma13 said:
Is it possible to change this in a way you can control how bright the screen is? The lowest setting is '12' that i can get and even that is nearly too bright indoors for me
I havent seen an all that does that
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
You should try an app called LUX. It will allow you to drop the brightness below the standard brightness.
madpuma13 said:
Is it possible to change this in a way you can control how bright the screen is? The lowest setting is '12' that i can get and even that is nearly too bright indoors for me
I havent seen an all that does that
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
yup there's an application for that already.
AcIdC0R3 said:
You should try an app called LUX. It will allow you to drop the brightness below the standard brightness.
Click to expand...
Click to collapse
Lux is a pay app and reading description in market says nothing about dimming below stock settings.
Screen adjust otoh actually can lower brightness to zero can also modify color and contrast too. Best of all it's free. Been looking forever for something like this that works in honeycomb as lowest stock brightness is still too bright for nighttime reading for me.

Automatic Brightness Erratic

Does it seem that the automatic brightness is unreliable? I turn it on in my dimly lit room (not dark, just dim) & the brightness goes to the lowest setting. Then, if I mess with it much, it might go to full brightness when the ambient light hasn't changed. I just take it off auto and set it to 50% manually. I think this is the only "issue" I've found with mine. Anyone else?
I have the same issue with a galaxy tab on honeycomb so I think it's just android. I only use manual settings.
Sent from my ASUS Transformer Pad TF300T using xda premium
Yeah I can't use auto. It's always too dim. It seems like there are only like 3 settings for it. Least brightness middle and full power. It's a lot easier to just set it how I need it and turn on performance mode. Usually I'm not moving around too much so I don't need to change it after its set. There's probably a way to set it so it's not so wrong all the time. I know with my DROID 3 people were always talking about changing the values because the back light only worked out on auto in the ics builds. So it's possible its in those settings.
Sent from my ASUS Transformer Pad TF300T using xda premium
same here - auto is unusable
Same thing for me too
Sent from my Transformer Pad TF300T using XDA Premium HD application

ambient light sensor not working in darker surrounding?

I love my tab through and through but there is one thing that makes me think I need to return it.
In darker surroundings the sensor does not work properly.
I use the lux-app to measure and set the brightness. On my NexusOne I for example measure ~200 lux.
On the Infinity lying just next to it the measuring process goes completely wild.
Once it measures 0 lux and gets stuck there. Then after a while it will measure 4 or 10 lux and stuck there even if you cover the sensor totally.
Only after measuring several times it will jump to 0 lux again.
Also when I try a sensor monitor and read out the ambient I can see that the readings will stop eventually for some time and then go on for some time period only to stop again for some time and so on.
I don't have all this in normal to bright light conditions.
I wonder is my unit just defective or is this a general problem.
I am afraid to send my unit back as it is working in every other aspect than this, well build and so on.
Do not want to swap it for a crappy unit
That is something I need to try. Coming from a prime I just thought the settings were different. I can't even leave mine on auto brightness as it turns it all the way down no matter what.
Good call on checking the sensor.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Here ya go - I found a way to "tune" the autobrightness - please read through this thread for details:
http://forum.xda-developers.com/showthread.php?p=30417539
Hope that helps - works great for me.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

Nexus 5 auto brightness problems?

Hey guys,
I'm using my new nexus 5 for about two days now and something seems to be wrong with auto brightness (at least) on my device. The phone makes the screen brighter just fine, but dimming it when it gets in a dark environment doesn't seem to work really well. Can someone give this a try please?
Just turn off the lights in a room and see if the screen adjusts correctly. On mine it doesn't.
Turning on and off auto brightness fixes the issue but as soon as the screen gets brighter again, the problem starts...
Thanks in advance
Gesendet von meinem Nexus 5 mit Tapatalk
Good spot, I seem to experience this as well ! Exactly as you say works fine until the brightness gets set higher then it wont ever fall back its as if it can never lower only increase brightness.... odd!
Did you give it a minute to adjust?
Since my Nexus 5 isn't here yet this is what I've observed on stock Android in the Galaxy Nexus and other phones:
While it should go down after some time it's pretty common for auto brightness not to dim down as soon as it gets darker. You don't want your brightness to jump up and down just because the lighting changes for a second. And since turning the brightness up is much more relevant than down it goes up almost instantly but before dimming back down it monitors the environment for a while.
When you turn auto brightness off and on again you force the sensor into a new reading so this should set the brightness to the correct level without delay.
But it wouldn't be the first time auto brightness was bugged on a phone.
The delay really annoyed me on my tablet running vanilla 4.2 so installed lux which works well. You set the brightness how you want it at a given light level and then it sets the brightness according to the ambient light each time you wake it up and holds that setting until the next time you wake it up... best of both worlds.
Sent from my Nexus 5 using xda app-developers app
You're right gokpog,it does work I just didn't give it time. It took around 10 seconds to change the backlight levels which is much longer than the nexus 4 which is why I didn't notice it. Hopefully there is a more sensitive curve in the future
Sent from my Nexus 5 using XDA Premium 4 mobile app
Yep this has been the case with stock android for a while. Feature or flaw you decide but it is what it is and is across the board no matter what device if its using stock android on it
Sent from my Galaxy Nexus using xda app-developers app
Well it doesn't seem to work as expected to me: go to a bright place, then to a very dark one. Yes it will dim a bit but not quite enough. Remain in the dark room and turn off auto brightness. Then turn it on again. The screen will get significantly darker than it was before
Gesendet von meinem Nexus 5 mit Tapatalk
brittonberkan said:
Well it doesn't seem to work as expected to me: go to a bright place, then to a very dark one. Yes it will dim a bit but not quite enough. Remain in the dark room and turn off auto brightness. Then turn it on again. The screen will get significantly darker than it was before
Gesendet von meinem Nexus 5 mit Tapatalk
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just swith screen off and then on again with power button to seee the difference
I'ts how stock android works..it only increase brightness but not decrease..
andQlimax said:
just swith screen off and then on again with power button to seee the difference
I'ts how stock android works..it only increase brightness but not decrease..
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Click to collapse
I have find too that the automatic brightness take time to decrease brightness, also increase, but the most annoying is that with the same level of light and without moving the phone, the brightness goes up and down erratically, without a reason, it didn't happen with any of my previous phones
I just installed this app today, I've had similar problems that weren't present on my N4. With this app running, when I turn the phone screen toward a light, it brightens, and back to face a darker place it dims almost immediately. To give me more battery life I've tuned the brightness curve to be a bit low, N5's auto seemed to be too bright for me overall anyway. Be sure to tinker with both the settings and advanced settings areas, by default the changes are sharp but you can make them fade instead. Fixed the problems I had at least.
https://play.google.com/store/apps/details?id=com.nnevod.loggraph
I have the same problem with my Nexus 5.
Additionally, since day one, I've noticed that the phone consistently auto adjusts the screen to be slightly brighter than necessary given the ambient light.
I just noticed this issue last night, or at least it's similar. I was reading in bed for a few hours and occasionally (maybe every 15 minutes) the screen would suddenly dim to about half brightness and then brighten back to where it was originally. It was driving me nutz. I've also had a few random reboots, though not while I was using it. I'd notice it on my table booting up. FYI, this is stock with the latest update, no root or unlocking, and still has plenty of free space in memory. I've only had it for about 4 days.

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