2

I upgraded my Sony SVF15A13SN -- which came with Windows 8 out of the box -- to Windows 8.1 yesterday, and have been unable to change my screen's brightness since; it's stuck on maximum.

I could change it just fine until yesterday. The brightness setting in the Settings Charm is unavailable (greyed out) now, and says "Windows can't adjust the brightness on this display" when I hover my cursor over it. The Fn+F5/F6 is also doing nothing. And I mean nothing -- I keep reading about people whose Brightness sliders move up and down while having no effect on the brightness; in my case, those buttons do nothing at all.

For all the lazy people out there who don't want to look up what hardware I'm sporting, it's an Intel® HD Graphics 4000 and an NVIDIA® GeForce® GT735M.

Now, these are the "solutions" I've found online:

  • "Update Intel driver"

Tried it. Didn't help.

  • "Roll back to previous Intel driver"

Tried it. Didn't help.

  • "Switch to basic display adapter"

Tried it. Didn't help.

  • "Disable Intel adapter, restart, Enable Intel adapter, restart"

Tried it. Didn't help.

  • "Update NVIDIA driver"

It's up to date.

  • "Disable adaptive brightness"

Tried it. Didn't help.

So.

What next?

9
  • Do you have TeamViewer installed?
    – Vinayak
    Jul 27, 2014 at 4:33
  • It's not the TeamViewer Display Adapter conflict. Was it the second post here that gave you the idea that it might be that? Jul 27, 2014 at 4:44
  • No. I've faced the same problem and the culprit in my case was TeamViewer's monitor driver. Uninstalling it restored brightness controls immediately.
    – Vinayak
    Jul 27, 2014 at 4:58
  • It doesn't have to be TeamViewer. Other monitor drivers might also break the brightness control function. You might want to check the driver for "Generic PnP Monitor" or whatever is listed under "Monitors" in Device Manager and make sure that it says "Driver Provider: Microsoft" and nothing something else.
    – Vinayak
    Jul 27, 2014 at 5:02
  • The Generic PnP Monitor was provided by Teamviewer, as you correctly guessed. I disabled, uninstalled, it, restarted Windows. No effect on the problem. I'm wondering, what will happen if I uninstall Intel HD Graphics 4000 entirely, then install the latest driver again? Is that even possible? Will my display go blank when I uninstall the adapter? Jul 27, 2014 at 9:02

3 Answers 3

1

yes, it is the Team Viewer monitor driver that caused the problem. try to uninstall it and you will get rid of the problem.

to uninstall:

  1. open team viewer> go to Extras > Options > Advanced > Show advanced options

2.scroll down.

3.under Advanced Network Settings , you will find the monitor diver.

  1. click Uninstall.

That will solve the problem.

Thanks :)

1
  • @fixer1234 this answer actually was what helped me. Teamviewer was blocking any change to brightness on my Windows 8.1. That freaking app is a mess and it wasn't the first time that it bring problems
    – mthandr
    Jun 22, 2015 at 5:22
0

Follow this in order and you should see three choices. Try the different ones to see if any change.

Control Panel > Device Manager > Display Adapters > Intel HD Graphics 4000 > Driver > Update Driver > Browse my computer > Let me pick...........you should see this:

Intel(R) HD Graphics 4000

Click it and then click next.

2
  • I tried them all already. Didn't help. Jul 27, 2014 at 9:01
  • Are you missing some ACPI power management driver on your laptop?
    – ryanswj
    Nov 5, 2014 at 11:56
0

Check if the new display driver is available for 8.1. Use it or use basic display adapter, this issue is caused by incompatible display driver. For more information check an article about adjusting the brightness after upgrading to Win 8.1

0

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .