[Bug 44955] New: Screen flickers after LVDS turned off and back on with MacBook Pro 8,2 (Radeon HD 6600M)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44955

             Bug #: 44955
           Summary: Screen flickers after LVDS turned off and back on with
                    MacBook Pro 8,2 (Radeon HD 6600M)
    Classification: Unclassified
           Product: DRI
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: seth.forshee at canonical.com


Created attachment 55810
  --> https://bugs.freedesktop.org/attachment.cgi?id=55810
dmesg output

When the LVDS panel is turned on after being off the screen flickers as if the
backlight is quickly alternating between low and high brightness values. The
flickering gradually fades until it is no longer noticeable. The graphics card
is:

ATI Technologies Inc Whistler [AMD Radeon HD 6600M Series] [1002:6741]

Other than LVDS this machine has a Thunderbolt/MiniDP connector. demsg output
and vbios are attached.

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