http://bugzilla.kernel.org/show_bug.cgi?id=9903
Summary: fujitsu-laptop creates /sys/class/backlight/fujitsu-
laptop/ entries, but brightness doesn't change if you
echo values to them. Amilo Pi 2515
Product: ACPI
Version: 2.5
KernelVersion: 2.6.24
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Latest working kernel version:-
Earliest failing kernel version:2.6.23.14
Distribution:gentoo 64-bit
Hardware Environment: Fujitsu-Siemens Amilo Pi 2515
Software Environment:
Problem Description: I am able to load fujitsu-laptop module, dmesg says:
fujitsu-laptop: driver 0.3 successfully loaded.
The modules creates entries in /sys/devices/platform/fujitsu-laptop/ and
/sys/class/backlight/fujitsu-laptop/. I am unable, however, to change my
brightness via /sys/class/backlight/fujitsu-laptop/brightness or
/sys/devices/platform/fujitsu-laptop/lcd_level. The values are written in
corresponding files, but nothing happens. actual_brightness is always 0
regardless of initial brightness level. No errors in dmesg.
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