Bug 642426 - Brightness control appears ineffective, stuck on full brightness of backlight
Brightness control appears ineffective, stuck on full brightness of backlight
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-nouveau (Show other bugs)
All Linux
low Severity medium
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Assigned To: Ben Skeggs
Fedora Extras Quality Assurance
Depends On:
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Reported: 2010-10-12 17:16 EDT by cam
Modified: 2012-08-16 13:39 EDT (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-08-16 13:39:31 EDT
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Description cam 2010-10-12 17:16:21 EDT
Description of problem:
Using Fn-F3 and F4 to alter brightness, the popup appears and brightness slider can be moved up and down. However the screen remains at a constant high brightness.

Version-Release number of selected component (if applicable):

How reproducible:
It's happening now after a few suspend/resume cycles. I get the impression it's been happening all along. 

Steps to Reproduce:
1.In runlevel 5
2.Fn-F3 / Fn-F4 to alter brightness
3.Observe popup with slider moving 
Actual results:
Brightness remains constant

Expected results:
Brightness should vary with controls

Additional info:
Used to work reliably in F13 with Nvidia driver (not 100% sure about Nouveau)
Comment 1 cam 2010-10-12 17:19:26 EDT
Note the hardware is Nvidia Ion (MCP79):

02:00.0 VGA compatible controller: nVidia Corporation ION LE VGA (rev b1) (prog-if 00 [VGA controller])
Comment 2 Fedora End Of Life 2012-08-16 13:39:34 EDT
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