ROSA Linux Bugzilla – Bug 2304
backlight fn+f11 and fn+f12 keys doesn't work since kernel 3.8 update
Last modified: 2013-10-22 10:08:03 MSD
Description of problem:
To have functionnal FN+F11 (backlight decrease) and FN+F12 (backlight increase) combinaison keys on my laptop it was necessary to put acpi_osi=Linux on the grub boot line before 3.8.x kernel update.
It was working very good but after kernel 3.8.x update i was unable to control backlight of my computer with fn keys and with kde powerdevil.
The problem with kde powerdevil is now solved since i have update kernel to 3.9.x but fn keys doesn't work anymore even if i put acpi_osi=linux on grub boot line.
see bug 2265 http://bugs.rosalinux.ru/show_bug.cgi?id=2265
i have tried with xev and showkey for FN + F11 (backlight decrease) and FN + F12 (backlight increase) but they don't return anything. No keycodes.
So, i tried with fedora 19 live usb and if i press Fn + F11 or Fn + F12 it show me that it is recognized but the function to increase/decrease doesn't look implemented.
showkey on fedora return me a keycode.
Can you tell me what results do you need?
Could you please help me?
If kernel is the only change you made, then do a git bisection.
Report first bad commit
And attach dmesg after pressing not working keys
I think this bug can be close.
I don't know since when it work but now with my Rosa 2012.1 up to date all is working including fn keys.
I don't know what update restore the function but really thank you to have solved this.
i will add my xorg.conf for people who have the same laptop like me.
Created attachment 2091 [details]