Bug 413031 - ACPI brightness keys broken on Thinkpad T61p
Summary: ACPI brightness keys broken on Thinkpad T61p
Keywords:
Status: CLOSED DUPLICATE of bug 363261
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 8
Hardware: i386
OS: Linux
low
medium
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-12-05 21:59 UTC by Brian Long
Modified: 2008-03-11 21:43 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-03-11 21:43:12 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Brian Long 2007-12-05 21:59:45 UTC 
Description of problem:
In Fedora8 latest kernel, I cannot use the brightness adjust keys of my Thinkpad
T61p laptop.

Version-Release number of selected component (if applicable):
kernel-2.6.23.8-63.fc8

How reproducible:
Always


Steps to Reproduce:
1. Grab a Thinkpad T61 or T61p
2. Press Fn+Home or Fn+End
3.

Actual Results:
Gnome brightness applet moves, but brightness does not change.

Expected Results:
Brightness of the LCD is changed and updated in GNOME brightness applet.

Additional info:
I noticed the ibm-acpi / thinkpad_acpi folks just released a patch which says it
fixes T61 and T61p issues.  It is located here:
http://sourceforge.net/project/showfiles.php?group_id=117042

I would like to know if you plan to port this into the 2.6.23.x kernel in Fedora
8 since it appears all T61 and T61p laptops are affected.  Thanks!
Comment 1 Chuck Ebbert 2008-02-06 01:29:29 UTC 
Try adding:

  acpi_osi="Linux"

to the kernel boot parameters...
Comment 2 petrosyan 2008-03-11 21:43:12 UTC 

*** This bug has been marked as a duplicate of 363261 ***
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