Jorick Astrego píše v Čt 17. 04. 2014 v 15:40 +0200: > On Thu, 2014-04-17 at 12:00 +0000, > desktop-request@xxxxxxxxxxxxxxxxxxxxxxx wrote: > > I've hit another annoying problem. I cannot change brightness level. > > The > > Fn keys don't work at all, when changing it in the user menu or > > power > > management settings it changes the backlight randomly in one of ten > > attempts. Moreover indicator in the user menu always shows zero > > level of > > backlight. > > I always blamed drivers or something lower in the graphics stack for > > this. But it works perfectly in KDE and I can also change backlight > > with > > xbacklight or xrandr. > > I'm using up-to-date Fedora 20+GNOME 3.12 Copr on Lenovo X240. > > Anyone has hit the same problem? > > BTW the more I'm using GNOME 3.12 the more I think it's not ready > > for > > the prime time. I'd rather wait for fixing releases. > > > > Jiri > I fixed this on mij Lenovo bij adding << Option "RegistryDwords" > "EnableBrightnessControl=1" >> to /etc/X11/xorg.conf in the "Device" > section: > > Section "Device" > Identifier "Videocard0" > Driver "nvidia" > Option "RegistryDwords" "EnableBrightnessControl=1" > EndSection > > Kind regards, This didn't help. What did help, though, was adding acpi_backlight=vendor as a boot parametr. Unfortunately, it doesn't solve the problem completely. GNOME still doesn't remember the backlight level from the last session and sets it to 0. So I boot into a black screen, have to adjust it manually, log in, and adjust it manually once again because it's set to 0 again. Jiri -- desktop mailing list desktop@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/desktop
