On Tue, Sep 25, 2012 at 8:57 PM, Geoff Crompton <geo...@trinity.unimelb.edu.au> wrote: > Package: xserver-xorg-video-radeon > Version: 1:6.14.4-5 > Severity: normal > > Dear Maintainer, > > The brightness controls on my iMac aren't effective at changing the brightness > of either of my displays. They do popup the gnome brightness indicator, and > alter the values of /sys/class/backlight/acpi_video0/brightness. > > But they don't effect the brightness of either the primary display, or the > secondary display I've got attached (via a thunderbolt to DVI connector). > Likewise the gnome system settings brightness controls slide around, and do > alter /sys/class/backlight/acpi_video0/brightness, but don't change the > brightness. > > Rebooting into Mac and setting the brightness there seems to maintain that > brightness setting when I reboot back into Linux. I'm booting with grub-efi.
If apple uses the built in GPU backlight controller, it may work with the new backlight control patches in my drm-3.7 branch: http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.7-wip Alex -- To UNSUBSCRIBE, email to debian-x-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/cadnq5_p+-3n8qrr4fmrncaoqbzwamu2e+pb0wdbvvuum7ba...@mail.gmail.com
