Automatic Brightness Erratic - Transformer TF300T Q&A, Help & Troubleshooting

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

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.

TF300T Bad Automatic Screen Brightness

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.
Click to expand...
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

TF700 screen - brightness decreases but then again increases as you tilt the tablet

Has anybody noticed the following phenomenon? You look straight at the tablet while holding it perpendicular to the floor at your eyes level.
Then you start tilting it towards yourself - brightness fades at about 45 degree but then returns at about 70 degree and stays at the original level almost to 90. Same if you turn the tablet around.
I would not be surprised if the brightness was gradually fading as the angle increased, but this is the fact that it fades and comes back as the angle increases is what's puzzling me.
Not a big deal, I am just curious.
mazuka said:
Then you start tilting it towards yourself - brightness fades at about 45 degree but then returns at about 70 degree and stays at the original level almost to 90. Same if you turn the tablet around.
I would not be surprised if the brightness was gradually fading as the angle increased, but this is the fact that it fades and comes back as the angle increases is what's puzzling me.
Click to expand...
Click to collapse
Color saturation is different when "the angle increases". I suggest you look into LCD polarizing filters. It's probably the screen component you want to investigate in order to understand this phenomenon.
Could it be the amount of light the ambient sensor is picking up? If you have it set to auto adjust that is.
sapienssapiens said:
I suggest you look into LCD polarizing filters. It's probably the screen component you want to investigate in order to understand this phenomenon.
Click to expand...
Click to collapse
I could not find that info related to tf700 screen... even generic articles on IPS and SIPS do not contain detailed description of how exactly brightness changes with viewing angle.
fsured said:
Could it be the amount of light the ambient sensor is picking up? If you have it set to auto adjust that is.
Click to expand...
Click to collapse
Nope, I have it on manual.
In case you have a tf700 - can you see this phenomenon, or it is just me?
I tried tilting while the screen showing a blank white page - same behavior, and it was almost like I could see some evenly distributed cloudy matter under the screen while at about 45 degree angle, and then the matter disappeared as the angle increased past 45...
resolved
OK, so I wrote Asus on it in get in reply usual "do a factory reset, if does not help - open an MRA";
I still insisted and got in reply something like "in this case we suggest you open an MRA".
I then visited a couple of stores and while I could not find TF700, I examined screens of TF101, TF201, TF300, Galaxy Tab 2, Acer, Toshiba - none had the issue.
At this point mine is going back to the seller.
mazuka said:
OK, so I wrote Asus on it in get in reply usual "do a factory reset, if does not help - open an MRA";
I still insisted and got in reply something like "in this case we suggest you open an MRA".
I then visited a couple of stores and while I could not find TF700, I examined screens of TF101, TF201, TF300, Galaxy Tab 2, Acer, Toshiba - none had the issue.
At this point mine is going back to the seller.
Click to expand...
Click to collapse
HELP!
I returned my TF700 and got another one - and here we go, THE SAME issue - I tilt the screen - brightness fades at 45 degree then returns at 75 or so.
Dear FT700 owners, take a few seconds, share your experiences with me, I do not believe I am the only one having this issue.
ASUS folks, I would really appreciate if you chime on this too. If I return my second TF700 - I am done with ASUS tablets in general.
I went through blurry TF101, not working TF201, and now two TF700 seemingly having a display issue, and this is while the display is the main selling point of the unit.
mazuka said:
HELP!
I returned my TF700 and got another one - and here we go, THE SAME issue - I tilt the screen - brightness fades at 45 degree then returns at 75 or so.
Dear FT700 owners, take a few seconds, share your experiences with me, I do not believe I am the only one having this issue.
ASUS folks, I would really appreciate if you chime on this too. If I return my second TF700 - I am done with ASUS tablets in general.
I went through blurry TF101, not working TF201, and now two TF700 seemingly having a display issue, and this is while the display is the main selling point of the unit.
Click to expand...
Click to collapse
Yes, my TF700 does the same thing - I believe that it's completely normal....
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
jtrosky said:
Yes, my TF700 does the same thing - I believe that it's completely normal....
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
My screen constantly adjusts brightness, but it has nothing to do with tilting the tablet. I can hold the tablet completely still and the brightness continuously adjusts, especially while watching videos. I must admit that it does get distracting as it happens every couple seconds depending on what is shown on the screen. I have autobrightness turned off.
jtrosky said:
Yes, my TF700 does the same thing - I believe that it's completely normal....
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
Thank you, jtrosky. Anyone else?
Cleanskinned said:
My screen constantly adjusts brightness, but it has nothing to do with tilting the tablet. I can hold the tablet completely still and the brightness continuously adjusts, especially while watching videos. I must admit that it does get distracting as it happens every couple seconds depending on what is shown on the screen. I have autobrightness turned off.
Click to expand...
Click to collapse
Try cold boot, then try factory reset, and if no results - send it back to the seller.
Cleanskinned said:
My screen constantly adjusts brightness, but it has nothing to do with tilting the tablet. I can hold the tablet completely still and the brightness continuously adjusts, especially while watching videos. I must admit that it does get distracting as it happens every couple seconds depending on what is shown on the screen. I have autobrightness turned off.
Click to expand...
Click to collapse
That is the dynamic contrast that you are speaking of. Basically, the tablet increases and decreases the backlight depending on how much white is on the screen, etc... Annoying, but it also helps make the screen look good (super high contrast)... No way to disable it yet though...
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
jtrosky said:
That is the dynamic contrast that you are speaking of. Basically, the tablet increases and decreases the backlight depending on how much white is on the screen, etc... Annoying, but it also helps make the screen look good (super high contrast)... No way to disable it yet though...
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
What? Nothing is changing on the screen so it can't be what you are saying. If the screen is displaying STATIC content it should display the same brightness no matter how you are looking at it. As I said before in a previous post, it is manufacturing of the cheap screen. How else do you think Asus made the Infinity the same price as the Prime? They had to take shortcuts and use cheaper inferior parts. Sorry.
Saywhat? The poster that I was replying to said that it was most noticeble while watching videos, not while the screen was static... Of course it's not auto-contrast if the screen is static!
Please actually read the posts before making stupid remarks!
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
I use Vplayer and Diceplayer which have the gesture controls to max bright the screen and Volume control. When I'm watching a movie I set it to high and I never have an issue with it dimming. Try it out.
I think it overrights the light sensor.
Sent from my LG-P999 using xda premium
Eroc162 said:
I use Vplayer and Diceplayer which have the gesture controls to max bright the screen and Volume control. When I'm watching a movie I set it to high and I never have an issue with it dimming. Try it out.
I think it overrights the light sensor.
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
So you are saying that you set the brightness to max and leave it there while watching a video?? I think that would be way to bright for most movie-viewing scenarios!
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
mazuka said:
HELP!
I returned my TF700 and got another one - and here we go, THE SAME issue - I tilt the screen - brightness fades at 45 degree then returns at 75 or so.
Dear FT700 owners, take a few seconds, share your experiences with me, I do not believe I am the only one having this issue.
ASUS folks, I would really appreciate if you chime on this too. If I return my second TF700 - I am done with ASUS tablets in general.
I went through blurry TF101, not working TF201, and now two TF700 seemingly having a display issue, and this is while the display is the main selling point of the unit.
Click to expand...
Click to collapse
Oh man...I thought you wanted to understand the science behind the phenomenon, not that you percieved this as a problem.
This is normal. There's nothing wrong with your screen.
sapienssapiens said:
Oh man...I thought you wanted to understand the science behind the phenomenon, not that you percieved this as a problem.
This is normal. There's nothing wrong with your screen.
Click to expand...
Click to collapse
^This
While there are some very valid issues being reporting, this isn't one of them.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
I also have a "brightness flicker" issue.
Even on a screen that does not change at all.
I just have to open google maps.
About every 2-10 seconds there are one or a few flickers.
I tried different power saving settings and disabled auto adjust brightness.
Screen still flicker.
I just have received my tf700t and have not yet noticed this flickering in other apps.
emmemm
this is normal, i noticed this too, when you go into a video it flickers and dims down but when you go back to the home screen it flickers back to normal, this is the contrast system not some bs about a cheap screen used by asus.

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

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