[Bug 216119] 087451f372bf76d breaks hibernation on amdgpu Radeon R9 390

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216119

--- Comment #39 from Harald Judt (h.judt@gmx.at) ---
Switching back to the original amdgpu_fb implementation (I've reverted this and
all relevant patches on stable-5.18.19), all remaining issues vanish. After two
hibernate/resume cycles, I can still successfully switch vts to the console and
back, and nothing freezes.

Regarding the "[drm] Fence fallback timer expired on ring sdma0 messages", they
also appear when using the amdgpu_fb implementation.

As for the display corruption on the console, this is an ascii art of how it
looks like - next time I'll try to take a picture.

-----------------------------------------------------------------------
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
|                       Beginning of line starts here not at column 0 |
-----------------------------------------------------------------------

Maybe that can give some clue what else could be wrong.

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