[Bug 56031] New: Enabling radeon HDMI audio causes video corruption in unsupported hardware

[Bug 56031] New: Enabling radeon HDMI audio causes video corruption in unsupported hardware

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=56031

           Summary: Enabling radeon HDMI audio causes video corruption in
                    unsupported hardware
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.8
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: low
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: darktjm@gmail.com
        Regression: Yes


I changed laptops from an r600 to an aruba, and accidentally left
radeon.audio=1 in my kernel parameters.  This caused the external screen to be
shifted right a bit and a pink stripe on the left.  This is due to change
f92e70cae880e3540d0c1dddc64825b70f963703 which does not filter out DCE6 (since
it is currently unsupported for HDMI) as it should.  The patch I have attached
adds this restriction, but it might be better if somewhere early in the device
initialization radeon_audio were just set to 0 if unsupported.

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