http://bugzilla.kernel.org/show_bug.cgi?id=12361
Summary: xbacklight doesn't change the display brightness on
ThinkPad X61s
Product: ACPI
Version: 2.5
KernelVersion: 2.6.28
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: acpi_power-vi...@kernel-bugs.osdl.org
ReportedBy: tino.kei...@web.de
Latest working kernel version: 2.6.27.8
Earliest failing kernel version: 2.6.28
Distribution: Debian Sid
Hardware Environment: ThinkPad X61s
Software Environment: Xorg 7.4
Problem Description: xbacklight doesn't change the display brightness
Steps to reproduce:
$ xbacklight
100.000000
$ xbacklight -set 10
$ xbacklight
6.666667
$
However, the actual brightness doesn't change.
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