[Bug 205049] garbled graphics

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=205049

--- Comment #4 from Alex Deucher (alexdeucher at gmail.com) ---
Just append:
amdgpu.ppfeaturemask=0xffff3fff
to the end of the kernel command line in grub.  Replace 0xffff3fff with
0xfffdbfff to try the other option. Repeat with 0xfffd3fff if necessary.

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