[Bug 35718] New: modprobe radeon modeset=1 causes screen to fade from black to white and back

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=35718

           Summary: modprobe radeon modeset=1 causes screen to fade from
                    black to white and back
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: cillian.deroiste at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=44912)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=44912)
Output of /var/log/messages after modprobe -v drm debug=15 && modprobe -v
radeon modeset=1

Linux: 2.6.37.1 SMP x86_64 GNU/Linux
X.Org X Server: 1.9.5
xf86-video-ati: 6.14.1

Steps to reproduce:
Boot to a shell without starting Xorg, neither drm nor radeon have been loaded.
modprobe -v drm debug=15
modprobe -v radeon modeset=1

The screen (terminal) goes black and gradually turns white (in a distorted way)
after about 2 seconds it turns black again.

(output from /var/log/messages attached) 

The microcode seems to get loaded correctly, fbcon is compiled into the kernel
(config attached)

Note that this is without starting Xorg at all, should I submit a bugreport to
the kernel instead? I can start Xorg, login (via slim or kdm) it appears to not
notice a problem at all.

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