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Brightness Controller Problem on VAIO

Last answer on Oct 30, 2009 6:29:17 am GMT Sanjay, on Jun 10, 2009 4:23:18 am BST 
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Hello,
Very Recently I have own a vaio laptop (VGN-CS14G), Preinstalles vista home premium. I have downgraded to windows xp and installed all drivers provided for xp. But I am not able to controll the brightness. fn+f5/f6 is not working for xp.

Configuration: Windows Vista Internet Explorer 8.0

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1

babol93, on Jun 10, 2009 5:56:58 pm BST

Did you verify if there's a driver for your keyboard functions??

Please try to download it or look for it on the driver CD

   
Reply to babol93

2

Sanjay, on Jun 11, 2009 5:02:38 am BST

I have downloaded and installed all the available driver from sony site. Then even not working. They havn't provide me any driver CD.

   
Reply to Sanjay

3

Chris, on Aug 12, 2009 2:52:43 am BST

I have the same pro with VGN CR23 G.
On http://www.sony-asia.com/...
they said Fn+F5 can't be used when downgrade.
Any idea?

   
Reply to Chris

4

Dan, on Oct 22, 2009 10:00:36 pm BST

Same issue with a BZ21VN: I've installed all drivers from the supplied CD and Sony website, but the brightness controls don't work. Incidentally, having the same issue with Linux, except that over there xbacklight provides a hack.

   
Reply to Dan

5

Sanjay, on Oct 23, 2009 3:02:25 am BST

Hi Dan,
No solution at all on this problem. Even Sony has accepted the function will not work with XP.

   
Reply to Sanjay

6

dmoney299, on Oct 30, 2009 6:26:31 am GMT

That's not true Sanjay:

solution to brightness problem is HERE:

http://blog.jesperhoy.com/post/Windows-7-on-Sony-Vaio-Bright­ness-Sleep-problem.aspx

i have downgraded to xp, and brightness shortcut controls work without a problem now

   
Reply to dmoney299

7

 dmoney299, on Oct 30, 2009 6:29:17 am GMT
  • +1

Sorry i dont have any scren shots, but what i did was:

right clik on my computer

click manage

click on 'device manager'

then right click on 'video controller' (which for me is already a yellow question mark for some reason)

then click 'disable'

then the hotkey brightness shortcut buttons started working.

after that i just 'enabled' the video controller

everything is still working great!

   
Reply to dmoney299
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