Regression: Black screen after resume from powersave

[Deucher, Alexander]

> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Martin Babutzka
> Sent: Monday, July 24, 2017 1:06 PM
> To: amd-gfx at lists.freedesktop.org
> Subject: Regression: Black screen after resume from powersave
> 
> Hello,
> 
> I tracked down another regression affecting my PC with R9 380 GPU,
> running the amd-staging-4.11 kernel on Xubuntu 17.04:
> 
> After resume from powersave, display freezes when the powersave is
> triggered from the lightdm locked screen or stays completely black if
> the powersave was triggered from a logged in user.
> 
> The regression occurs the first time when I build the kernel including
> commit 323a1cc8f7d3c40a8e77751d62545de43fa52653. Here is the result
> from the testing series:
> 8. Step - crashes
> bfd40a54f781899ee5b9ddffc459a6eafe2bba86
> 11. Step - crashes
> dde557132beb2cfb9e98046936cb3565b21d6f9c
> 12. Step - crashes
> 323a1cc8f7d3c40a8e77751d62545de43fa52653
> 10. Step - works
> 19993e3a86268a30c8b1c31c4518fc403431efe2
> 3af79f94b85557d26d53909ed85526ec980ffd7f
> b81aface585aab7262a830aa2f93ff53d4baf3c0
> 9. Step - works
> 8d1610a0f3b99e3f950064dc4c476000d3b6ba02
> d36719c5ea181601f47e2d056a444d025a5247c6
> 2247dfee70a96025ba389f363b9088e2d377c7cc
> 239e79555c7e490823582b9a66390e76ebabb9ab
> 
> Maybe this is also linked to:
> "iMac 10,1 with Ubuntu 16.04: black screen after suspend (Florian
> Echtler)"

Not related.  That patch is for a different driver (radeon) and different hardware (r7xx).

> 
> If you fix this successfully I would be very glad if you push the
> commit to amd-staging-4.11 again.

Can you do a proper git bisect?

Alex

> 
> Many regards,
> Martin Babutzka
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