Bug 642426 - Brightness control appears ineffective, stuck on full brightness of backlight
Summary: Brightness control appears ineffective, stuck on full brightness of backlight
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-nouveau
Version: 14
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Ben Skeggs
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-10-12 21:16 UTC by cam
Modified: 2012-08-16 17:39 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2012-08-16 17:39:31 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description cam 2010-10-12 21:16:21 UTC
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):
xorg-x11-drv-nouveau-0.0.16-13.20101010git8c8f15c.fc14.i686
kernel-2.6.35.6-40.fc14.i686

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 21:19:26 UTC
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 17:39:34 UTC
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