Bug 413031

Summary:	ACPI brightness keys broken on Thinkpad T61p
Product:	[Fedora] Fedora	Reporter:	Brian Long <brilong>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	8	CC:	katzj
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-03-11 21:43:12 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

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 ***