[Bug 196615] amdgpu - resume from suspend is no longer working on rx480

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=196615

Francisco J. Vazquez (dv at v44r.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dv at v44r.com

--- Comment #6 from Francisco J. Vazquez (dv at v44r.com) ---
Same error on Gentoo, kernel 4.12.7, RX 470. On 4.12.7 the screen does come up
on wake up from suspend after a while (20 seconds or so) but the system is
unusable: the mouse cursor moves fine and the keyboard responds to keypresses
but the screen updates with a 20-30s lag (if I launch a new terminal it appears
after half a minute). Changing to VT with ctrl+alt+f[1-6] garbles the screen.

4.12.7 wake up:
[...]
[  128.978655] [drm] ring test on 10 succeeded in 6 usecs
[  129.025563] [drm] ring test on 11 succeeded in 1 usecs
[  129.025563] [drm] UVD initialized successfully.
[  129.126522] [drm] ring test on 12 succeeded in 0 usecs
[  129.331084] [drm:amdgpu_vce_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 13
test failed
[  129.331088] [drm:amdgpu_resume [amdgpu]] *ERROR* resume of IP block
<vce_v3_0> failed -110
[  129.331092] [drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_resume failed
(-110).
[  129.331094] dpm_run_callback(): pci_pm_resume+0x0/0xd0 returns -110
[  129.331095] PM: Device 0000:01:00.0 failed to resume async: error -110



On 4.12.3 the screen comes up instantly after resume and everything works fine. 

4.12.3 wake up:
[...]
[   14.255996] [drm] ring test on 10 succeeded in 6 usecs
[   14.302859] [drm] ring test on 11 succeeded in 1 usecs
[   14.302860] [drm] UVD initialized successfully.
[   14.403827] [drm] ring test on 12 succeeded in 0 usecs
[   14.403847] [drm] ring test on 13 succeeded in 9 usecs
[   14.403848] [drm] VCE initialized successfully.
[   14.403945] [drm] ib test on ring 0 succeeded
[   14.404119] [drm] ib test on ring 1 succeeded
[...]
[   14.405487] [drm] ib test on ring 11 succeeded
[   14.405694] [drm] ib test on ring 12 succeeded

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