[Bug 96527] [radeon] sumo2 locks up and fails to train displayport during boot (panel turns off)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96527

--- Comment #3 from Alex Deucher <alexdeucher at gmail.com> ---
It looks like a GPU hang.  I think the displayport failure is just a side
effect of that.  Does it work if you disable acceleration in X?  To disable
acceleration, add an /etc/X11/xorg.conf file with the following content:

Section "Device"
        Identifier              "Device0"
        Driver                  "radeon"
        Option                  "NoAccel" "true"
EndSection

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