[Bug 63941] New: Can't control brightness with ATI 5650/Intel Ironlake when switched to radeon

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=63941

            Bug ID: 63941
           Summary: Can't control brightness with ATI 5650/Intel Ironlake
                    when switched to radeon
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.11.6
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: nikoamia at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 112531
  --> https://bugzilla.kernel.org/attachment.cgi?id=112531&action=edit
lspci

I have hybrid ATI 5650/Intel Ironlake muxed system, and when I switch to
radeon, backlight stays enabled now (looks like it have been fixed in
https://bugzilla.kernel.org/show_bug.cgi?id=55311), but I can't change levels
at all, and it becomes disabled when I do suspend cycle.
ls /sys/class/backlight:
acpi_video0 acpi_video1 intel_backlight
Neither of them work.

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