https://bugs.freedesktop.org/show_bug.cgi?id=107781
--- Comment #4 from Alex Findler <walthervondervogelwe...@gmx.de> ---
I've tried with all kernels that Fedora offered during the last two months,
including 4.16 varieties.
These are the kernel options I tried:
radeon.cik_support=0 amdgpu.cik_support=1 scsi_mod.scan=sync
amdgpu.gpu_recovery=1 amdgpu.dc=1
I have now added the option iommu=soft, and it seems to solve the problem! I
have tried suspend via script (echo mem > /sys/power/state), via hardware
button, and via plasmashell option, and all come back, including wake-up by lid
signal. I'll test this for a couple of days now and see if it works
persistently, then report back.
Thanks for your quick reaction, it is much appreciated.
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