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View Full Version : G752VT screen brightness always set on 100% and cannot be changed



guyfawkes
04-07-2017, 09:22 PM
I cannot change screen brightness on my laptop. It seems it's always set on 100%. How can I fix this problem?

FirebirdTA01
04-07-2017, 10:47 PM
It sounds like a driver issue, have you ever been able to change the screen brightness? What OS are you running and have you changed anything? Give a little more info but if I had to guess I'd say its one of either ATK, keyboard hotkey driver or display driver.

jrrougeau
04-08-2017, 03:37 AM
I'm having the same issue, same laptop, just within the past 24 hours. Brightness will not change using F keys, action center, power profiles.

FirebirdTA01
04-08-2017, 04:40 AM
Have there been any updates through windows update recently? Any changes in software or programs installed? Also, do all of the other function keys still work?

karl6774
04-08-2017, 06:59 AM
Have there been any updates through windows update recently? Any changes in software or programs installed? Also, do all of the other function keys still work?

and happened to me, and certainly after the 'driver update nvidia
Now I try to re-install the old version

Belryuminus
04-08-2017, 07:10 AM
Same problem here with a G752VY. Just went through the Nvidia 381.65 update. Tried few fixes found here but did not work.

OS is Win10 64b
No special makor updates (but Creators coming).

Belryuminus
04-08-2017, 07:25 AM
Ok so for me it was nVidia driver.

Rolling back to 378.92 is solving the pb for me so maybe you should give it a try.

I guess the new driver (381.65) is already made to work with the win10 Creator update and undergoes few unexpected pb with actual version.

guyfawkes
04-09-2017, 10:54 AM
How to roll back?

guyfawkes
04-09-2017, 11:04 AM
Here what I found:

https://forums.geforce.com/default/topic/1002975/always-full-uncontrollable-brightness-after-driver-381-65-update/?offset=5

http://nvidia.custhelp.com/app/answers/detail/a_id/4448/

Dr4g0n36
04-09-2017, 08:57 PM
i'm even on CU (se my post near here) an brghtness stuck at 100%, so reading this there's no difference between AU and CU, might be nvidia_something_related. Someone have roll-backed?

Belryuminus
04-10-2017, 07:05 AM
i'm even on CU (se my post near here) an brghtness stuck at 100%, so reading this there's no difference between AU and CU, might be nvidia_something_related. Someone have roll-backed?

Hello Dragon,

yes i had exactly the same problem and i rolled back to 378.92, wich you can find on NVidia website, in the "Beta drivers and Archives" section (french word, i dont know in English).

Should solve your problem ;)

Dr4g0n36
04-10-2017, 07:14 AM
Hello Dragon,

yes i had exactly the same problem and i rolled back to 378.92, wich you can find on NVidia website, in the "Beta drivers and Archives" section (french word, i dont know in English).

Should solve your problem ;)

Yeah isn't quite a problem due to 99% of time my G is under PSU...but very annoying when using it on battery...40 minutes are a luck :D

jrrougeau
04-15-2017, 12:37 AM
Here what I found:

https://forums.geforce.com/default/topic/1002975/always-full-uncontrollable-brightness-after-driver-381-65-update/?offset=5

http://nvidia.custhelp.com/app/answers/detail/a_id/4448/


Thanks for that! Rolling back the driver did the trick for me. Issue will most likely be fixed in the next driver update.

Dr4g0n36
04-15-2017, 01:10 AM
Thanks for that! Rolling back the driver did the trick for me. Issue will most likely be fixed in the next driver update.

Yeah, you can see my post in the related discussion...let's wait for a fix.

Dr4g0n36
04-25-2017, 09:33 PM
Guys, with new 381.89 Drivers all retuned fine! Download it from site or GFE.