Regression: Black screen after resume from powersave

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Hello,

Didn't know git bisect yet - awesome command. I did basically a binary
search manually but grouped some commits logically together. Well this
the result with git bisect:

323a1cc8f7d3c40a8e77751d62545de43fa52653 is the first bad commit
commit 323a1cc8f7d3c40a8e77751d62545de43fa52653
Author: Christian König <christian.koenig at amd.com>
Date:   Fri Jun 30 12:19:42 2017 +0200

    drm/amdgpu: stop mapping BOs to GTT
    
    No need to map BOs to GTT on eviction and intermediate transfers
any more.
    
    Signed-off-by: Christian König <christian.koenig at amd.com>
    Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

:040000 040000 962cffe27f66877559c78b69ba7f0e2d503e12d4
cd0a1c7e073dbbcc6497d4e6a76ba41ad248ea30 M	drivers


git bisect log
git bisect start
# bad: [f44148a55c29decda4ce3156426008282feb846e] drm/amdgpu: Try
evicting from CPU visible to invisible VRAM first
git bisect bad f44148a55c29decda4ce3156426008282feb846e
# good: [66e26593fbe5523965ccb547fb18c50b7becf91e] drm/amd/powerplay:
fix bug fail to remove sysfs when rmmod amdgpu.
git bisect good 66e26593fbe5523965ccb547fb18c50b7becf91e
# bad: [dde557132beb2cfb9e98046936cb3565b21d6f9c] drm/amdgpu: remove
maximum BO size limitation v2
git bisect bad dde557132beb2cfb9e98046936cb3565b21d6f9c
# good: [69112fb54676b519aedb3f15069ac0273fc051b4] drm/amd/powerplay:
move VI common AVFS code to smu7_smumgr.c
git bisect good 69112fb54676b519aedb3f15069ac0273fc051b4
# good: [d36719c5ea181601f47e2d056a444d025a5247c6] drm/amdgpu/gmc9: get
vram width from atom for Raven
git bisect good d36719c5ea181601f47e2d056a444d025a5247c6
# good: [3af79f94b85557d26d53909ed85526ec980ffd7f] drm/amdgpu: add
amdgpu_gart_map function v2
git bisect good 3af79f94b85557d26d53909ed85526ec980ffd7f
# bad: [323a1cc8f7d3c40a8e77751d62545de43fa52653] drm/amdgpu: stop
mapping BOs to GTT
git bisect bad 323a1cc8f7d3c40a8e77751d62545de43fa52653
# good: [19993e3a86268a30c8b1c31c4518fc403431efe2] drm/amdgpu: use the
GTT windows for BO moves v2
git bisect good 19993e3a86268a30c8b1c31c4518fc403431efe2
# first bad commit: [323a1cc8f7d3c40a8e77751d62545de43fa52653]
drm/amdgpu: stop mapping BOs to GTT

Many regards,
Martin Babutzka


Am Montag, den 24.07.2017, 18:12 +0000 schrieb 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
> > _______________________________________________
> > amd-gfx mailing list
> > amd-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/amd-gfx


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