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

[bugzilla-daemon@kernel.org]

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

--- Comment #20 from Harald Judt (h.judt@gmx.at) ---
One thing that I have noticed: Since these changes, the kernel seems to switch
to text mode when hibernating. Before that I think it remained (frozen) on the
X screen.

Here are the results:
- 1+4: screen black, display suspend led, keyboard comes online again but no
ssh. can sysreq to reboot.
- 2+4: screen black first, comes back after some time, restores screen with
hibernation snapshotting progress visible (not those of resume), continues to
resume (resuming progress visible), but then screen goes black again in dpms
on, ssh available. was able to compile kernel and reboot via ssh.
- 3+4: does not compile. unknown fb struct or so. because of that, i tried
2+3+4 since 2+4 compiled fine and worked fine mostly.
- 2+3+4 works as good as 1+2+3+4. seems patch 1 is not necessary.

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