Bug 28752

Summary: Hotkey[Fn+F5/F6] can't adjust brightness
Product: ACPI Reporter: reinhart (reinhart.lin)
Component: OtherAssignee: acpi_other
Status: CLOSED DUPLICATE    
Severity: normal CC: lenb, rui.zhang
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.35.7 Subsystem:
Regression: No Bisected commit-id:
Attachments: 2.6.35.7 kernel configuration

Description reinhart 2011-02-10 09:14:13 UTC
Created attachment 47092 [details]
2.6.35.7 kernel configuration

I encounter a problem that brightness doesn't be adjusted when I press Fn+F5/F6(brightness up/down) in Asus K52J machine.
I debug this problem when I change kernel command line(acpi_backlight and acpi_display_output) from "vendor" to "video", and this problem can be fixed.
I don't know whether backlight device module causes this problem, but the same asus-laptop module doesn't occur this problem in Asus K42JR machine.
I hope that I can understand the reason of this problem.

Thank you for your help!!


PS:In K52J machine : Fn+F5/F6 can work when enter BIOS setup window
PS2: In K42JR machine : Fn+F5/F6 can't work when enter BIOS setup window
Comment 1 Zhang Rui 2011-02-15 01:30:05 UTC

*** This bug has been marked as a duplicate of bug 28762 ***