Asus N56VZ can't change brightness

Well I can't change brightness either with FN+F keys or in the power options. There just isn't a slider for adjusting brightness. I got Windows 8, first everything worked fine but like a week ago the brightness bug arrived. Well it's quite annoying because it eats the battery too fast. Anybody got any ideas?

 

There SHOULD be a brightness setting in your power options. When you say "everything worked fine", did the slider show up and work previously? Have you ever been able to manually adjust the brightness settings? Check your profile in the power options configurations and see if you can change it.

 

There aren't any settings for brightness adjustment in power options. Yes the slider was there before and it worked great except the addition that when i used my FN key for brightness down the FN keys would jam for 30 seconds and would work afterwards. Also there even isn't the dim option anymore in the power options.

 

Uh, that is WEIRD. Possible OS corruption? Have you downloaded/installed anything recently? Particularly anything inadvertently (like a friendly toolbar companion to accompany your software download? )

 

I don't have the custom brightness settings too! Neither the FN+F5 or FN+F6 work! I think intel graphics update caused the problem, but I couldn't fix it :S

Edit: Windows 7 here

 

Bump.

Have you tried a clean reboot (safe mode + all non-Microsoft services disabled + all startup items disabled) and then gone into the brightness settings to see if it shows up? Did it disappear immediately after that update (or any update)?

Try making a new user account and then see if it shows up in the settings under the new account, and let us know your findings. I'm trying to figure out for you whether it's OS corruption, a bad update, or a flaw/bug/incompatibility of some sort.

 

Not yet solved.

I tried:

• clean reboot (safe mode + all non-Microsoft services disabled + all startup items disabled)
• new windows account
• Uninstalled nvidia drivers, intel hd 4000 drivers, ATK package drivers. Cleaned registry. Installed again the latest versions.

None worked.

I noticed the screen brightness changes with the room light, it captures the light from webcam, if I cover webcam the screen becames darker. I tried to disable webcam, the brightness settings don't appear either way.

Drivers used:

• NVIDIA GeForce GT 650M: Version 9.18.13.1070 (310.70)
• Intel HD Graphics 4000: Version 9.17.10.2875
• ATK package: Version V1.0.0023

 

I usually find display brightness not changing is a display driver issue, but if the webcam is doing it then that sounds like third party software getting in the way IMO.

Have you tried checking out all the options in the included webcam settings program?

 

Some models have Ambient Light Sensor. Press Fn + A to disable it.
Asus User Manual page 41.
http://dlcdnet.asus.com/pub/ASUS/nb/N56VJ/E6951_Emanual_N56VM_N56VZ.pdf

 

CoolUI thanks for the tip but it didn't work. I also tried to disable a windows service "Adaptive lightning".

I searched the sensor in device manager to disable it, but didn't find. I don't know what to do more..

 

At this point, I would suggest contacting Asus. You may want to include a link to this page if you email them, so that they can look over the troubleshooting tips you've received so far.

Did you check for third party software that may be controlling the ambient light feature, as Meaker mentioned?

 

Solved!

I tried everything, never thought this until I found another topic with the same problem.

Teamviewer 8 was the problem! Now everything makes sense. One day, I was remote controlling my laptop with teamviewer and wanted to disable my screen. It installed a driver.

So the solution was:



Thanks everyone!

 

Can't believe it but it also solved the problem for me, big kudos man!

 

Haha, here we are pulling our hair out, thinking there's some sort of defect! Well congrats on the findings, and thanks for posting! I will keep this in mind (and other remote control applications) if I run into this again.