[Bug 108096] [amd-staging-drm-next] SDDM screen corruption (not usable) with RX580, amdgpu, dc=1 (of course), regression - [bisected]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108096

--- Comment #22 from Andrey Grodzovsky <andrey.grodzovsky at amd.com> ---
(In reply to Andrey Grodzovsky from comment #21)
> Please load the driver in debug mode so I can see the error code value in
> dmesg - 
> when loading the kernel add drm.debug=0xff
> 
> Also to trace where exactly the error originated from please install
> trace-cmd and beore starting X (assuming you get the failure and the dmesg
> error right on start)
> sudo trace-cmd start -p function_graph -l amdgpu_cs_ioctl
> and get the output from /sys/kernel/debug/tracing/trace

My bad, the correct command is
sudo trace-cmd start -p function_graph -g amdgpu_cs_ioctl

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