[Bug 211649] "drm/amd/display: reuse current context instead of recreating one" cause hdmi hotplug blackscreen on amdgpu

https://bugzilla.kernel.org/show_bug.cgi?id=211649

--- Comment #9 from youling257@gmail.com --- Created attachment 295197 --> https://bugzilla.kernel.org/attachment.cgi?id=295197&action=edit dmesg.txt

I delete "read -n 1", can output dmesg.txt and trace.txt. trace.txt, # tracer: function # # entries-in-buffer/entries-written: 0/0 #P:8 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | |