Comment 11 for bug 1263498

Hello, thanks for your report!

Due to your link, i have testet die "acpi_osi= " parameter again and against my first description (i was able to adjust die brightness via fn keys once a time #9) the brightness stand still on 100%, but the difference to other parameters is that the notification daemon show me the reaction.

The problem is may a clash between backlight providers ... https://bugs.freedesktop.org/show_bug.cgi?id=81762 (Comment 6).

Here i found more information about two patches https://bugzilla.kernel.org/show_bug.cgi?id=70241 (Comment 94,92).

But it seems there is no proper solution for me so far ... :(

Regards,

patrice