[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

Michel Dänzer  changed:

   What|Removed |Added

   Assignee|dri-devel@lists.freedesktop |xorg-driver-...@lists.x.org
   |.org|
 QA Contact||xorg-t...@lists.x.org
  Component|DRM/AMDgpu  |Driver/AMDgpu
Version|XOrg git|git
Product|DRI |xorg

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[Bug 103791] Tearing after screen wakeup/on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #21 from Michel Dänzer  ---
(In reply to Anthony Parsons from comment #18)
> Running xrandr doesn't seem to work as a workaround but flipping VTs does.

Have you tried turning it off and on again? (Who gets the reference? :)

xrandr --output DisplayPort-0 --set TearFree off
xrandr --output DisplayPort-0 --set TearFree on

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #20 from denisgolo...@yandex.ru ---
Doing 
$ xrandr --output DisplayPort-0 --set TearFree on

... does not help. Tearing is still present.

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #19 from denisgolo...@yandex.ru ---
Still better to have a proper fix first as New Year present to us (poor users)
;)

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #18 from Anthony Parsons  ---
Hi, I'm seeing the same problem on an RX550 (polaris12). Running xrandr doesn't
seem to work as a workaround but flipping VTs does. Would having the debug
output for this one be useful, or was the other log enough?

kernel 4.14.5-zen+
xorg 1.19.5
xf86-video-amdgpu 1.4.0
libdrm 2.4.88

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #17 from Michel Dänzer  ---
Thanks. I think I see what's happening, but I need some time to think about how
to address it.

Meanwhile, you should be able to re-enable TearFree by forcing a modeset, e.g.
by re-enabling the TearFree property:

xrandr --output DisplayPort-0 --set TearFree on

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #16 from denisgolo...@yandex.ru ---
Created attachment 135989
  --> https://bugs.freedesktop.org/attachment.cgi?id=135989=edit
dmesg with vblank interrupt

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #15 from Michel Dänzer  ---
Created attachment 135969
  --> https://bugs.freedesktop.org/attachment.cgi?id=135969=edit
Debugging output related to enabling/disabling the vblank interrupt

Another iteration, to find out why the vblank interrupt doesn't get enabled.

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #14 from denisgolo...@yandex.ru ---
Created attachment 135938
  --> https://bugs.freedesktop.org/attachment.cgi?id=135938=edit
dmesg with vblank debug

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #13 from Michel Dänzer  ---
Created attachment 135923
  --> https://bugs.freedesktop.org/attachment.cgi?id=135923=edit
drm_vblank_get debugging output

Please do the same with this patch, to see why drm_vblank_get returns -EINVAL.

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #12 from denisgolo...@yandex.ru ---
Created attachment 135917
  --> https://bugs.freedesktop.org/attachment.cgi?id=135917=edit
dmesg with debug

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #11 from denisgolo...@yandex.ru ---
Yes, I fixed some small issues with the patch.
Now I have following appear in dmesg:
[ 2108.319205] [drm] drm_crtc_vblank_get returned -EINVAL
[ 2108.319235] [drm] crtc 0 failed to acquire vblank counter, -22

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #10 from Michel Dänzer  ---
BTW, the patch is completely untested; if it fails to compile, hopefully it
won't be hard to fix it up.

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #9 from Michel Dänzer  ---
Created attachment 135808
  --> https://bugs.freedesktop.org/attachment.cgi?id=135808=edit
Add debugging output why the ioctls return -EINVAL

Sorry, been busy with other fires.

Please recompile the drm.ko module with this patch applied, reproduce the
result with the resulting binary and attach the dmesg output.

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #8 from denisgolo...@yandex.ru ---
Any news on that?
Should I report some more information/logs/etc?

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #7 from denisgolo...@yandex.ru ---
See attached dmesg with debug. 
Tearing appeared after turning display on.

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #6 from denisgolo...@yandex.ru ---
Created attachment 135701
  --> https://bugs.freedesktop.org/attachment.cgi?id=135701=edit
dmesg + debug

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #5 from denisgolo...@yandex.ru ---
(In reply to Michel Dänzer from comment #4)
> We need to find out why the kernel starts returning -EINVAL from the page
> flip and wait for vblank ioctls.
> 
> Can you try writing 255 to /sys/module/drm/parameters/debug before
> reproducing the problem, and attach the resulting dmesg output? (Note that
> writing non-0 to /sys/module/drm/parameters/debug will cause a lot of
> debugging output to be generated, so you'll want to write 0 to it again soon
> afterwards)

Got it. I'll attach dmesg as soon as I reproduce the issue.

> In case that doesn't reveal why -EINVAL is being returned, are you able to
> recompile the drm.ko / amdgpu.ko kernel modules with a patch applied?

Sure. Gentoo is there :)

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #4 from Michel Dänzer  ---
We need to find out why the kernel starts returning -EINVAL from the page flip
and wait for vblank ioctls.

Can you try writing 255 to /sys/module/drm/parameters/debug before reproducing
the problem, and attach the resulting dmesg output? (Note that writing non-0 to
/sys/module/drm/parameters/debug will cause a lot of debugging output to be
generated, so you'll want to write 0 to it again soon afterwards)

In case that doesn't reveal why -EINVAL is being returned, are you able to
recompile the drm.ko / amdgpu.ko kernel modules with a patch applied?

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

Michel Dänzer  changed:

   What|Removed |Added

 Attachment #135554|text/x-log  |text/plain
  mime type||

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #3 from denisgolo...@yandex.ru ---
Created attachment 135554
  --> https://bugs.freedesktop.org/attachment.cgi?id=135554=edit
Xorg.0.log

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #2 from denisgolo...@yandex.ru ---
Created attachment 135553
  --> https://bugs.freedesktop.org/attachment.cgi?id=135553=edit
dmesg

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

--- Comment #1 from denisgolo...@yandex.ru ---
Created attachment 135552
  --> https://bugs.freedesktop.org/attachment.cgi?id=135552=edit
xorg.conf

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[Bug 103791] Tearing after screen wakeup/on

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https://bugs.freedesktop.org/show_bug.cgi?id=103791

Bug ID: 103791
   Summary: Tearing after screen wakeup/on
   Product: DRI
   Version: XOrg git
  Hardware: Other
OS: All
Status: NEW
  Severity: normal
  Priority: medium
 Component: DRM/AMDgpu
  Assignee: dri-devel@lists.freedesktop.org
  Reporter: denisgolo...@yandex.ru

Hi

Sometimes after screen wakeup/turning on I start to experience tearing.
Tear free mode works fine before sleep/turning display off.

My hardware is XFX Radeon RX580.
Software:
kernel-4.13.13+ck1,
xorg-1.19.5,
xf86-video-amdgpu (git 3a4f7422913093ed9e26b73ecd7f9e773478cb1e), 
libdrm-2.4.88

See dmesg, Xorg.0.log, xorg.conf attached.

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