https://bugzilla.kernel.org/show_bug.cgi?id=15609
Summary: ACPI brightness bug no FN F7 F8 brightness control and
start up with a dim brightness.
Product: ACPI
Version: 2.5
Kernel Version: 2.6.31.20
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: chenal...@163.com
Regression: No
I have problem using linux OS to adjust my video brightness using the FN+F7 and
FN+F8 and every time start up it automatically set the LCD to the lowest level.
I can change the brightness with echo. And here is my cat info from the
terminal.
laptop:~# cat '/proc/acpi/video/GFX0/DD03/brightness'
levels: 13 25 38 50 63 75 88 100
current: 50
I tried with this unoffical fix but not working any more.
http://ubuntuforums.org/showthread.php?t=881241
I wish next kernel can add my laptop brightness fix. Thank you for ur time.
If u need more detail pls let me know.
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