[Bug 203471] New: Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[Bug 203471] New: Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

            Bug ID: 203471
           Summary: Tearing on Raven Ridge and RX560X PRIME setup even
                    with Vsync enabled
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.1 rc6
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: haxk612@gmail.com
        Regression: No

I have Acer Nitro 5 AN515-42 with Ryzen 5 2500U and RX560X.
When i launch some game with DRI_PRIME=1 to have it on dGPU there is huge
tearing on top of the screen that is there with or without Vsync.
If i launch the game on iGPU there is no tearing at all.
Also the tearing happens only when the game is in fullscreen.
If i take a screenshot there is no tearing in the screenshot.
And i cannot post a picture as my phone camera is broken in my latest build of
android.
I have tried 5.2-wip branch and there is the same issue.
Will post dmesg and journalctl in few hours.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #1 from Haxk20 (haxk612@gmail.com) ---
Created attachment 282573
  --> https://bugzilla.kernel.org/attachment.cgi?id=282573&action=edit
dmesg

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #2 from Haxk20 (haxk612@gmail.com) ---
Created attachment 282575
  --> https://bugzilla.kernel.org/attachment.cgi?id=282575&action=edit
journalctl

If you need anything more please tell me.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #3 from Michel Dänzer (michel@daenzer.net) ---
Please attach the corresponding Xorg log file and the output of glxinfo (both
with and without DRI_PRIME=1).

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #4 from Haxk20 (haxk612@gmail.com) ---
Created attachment 282585
  --> https://bugzilla.kernel.org/attachment.cgi?id=282585&action=edit
Xorg log

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #5 from Haxk20 (haxk612@gmail.com) ---
Created attachment 282587
  --> https://bugzilla.kernel.org/attachment.cgi?id=282587&action=edit
DRI_PRIME=1 glxinfo

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #6 from Haxk20 (haxk612@gmail.com) ---
Created attachment 282589
  --> https://bugzilla.kernel.org/attachment.cgi?id=282589&action=edit
glxinfo

Here is Xorg log, glxinfo with DRI_PRIME=1 and glxinfo without PRIME.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

Haxk20 (haxk612@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|5.1 rc6                     |5.1 rc6 and
                   |                            |drm-next-5.2-wip

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #7 from Haxk20 (haxk612@gmail.com) ---
(In reply to Michel Dänzer from comment #3)
> Please attach the corresponding Xorg log file and the output of glxinfo
> (both with and without DRI_PRIME=1).

Is there anything more you need to figure out whats casuing this bug ?
I will try to play some game on HDMI output and see if its purely eDP issue or
it applies to other connectors too.
Will post tomorrow.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

Michel Dänzer (michel@daenzer.net) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nicholas.kazlauskas@amd.com

--- Comment #8 from Michel Dänzer (michel@daenzer.net) ---
The tearing occurs because amdgpu doesn't support scatter/gather scanout with
Raven yet, so page flipping cannot be used.

For the time being, you can get rid of the tearing by enabling TearFree:

 xrandr --output eDP --set TearFree on

See the amdgpu (4) manpage for more information about TearFree.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #9 from Haxk20 (haxk612@gmail.com) ---
Thank you.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #10 from Haxk20 (haxk612@gmail.com) ---
(In reply to Michel Dänzer from comment #8)
> The tearing occurs because amdgpu doesn't support scatter/gather scanout
> with Raven yet, so page flipping cannot be used.
> 
> For the time being, you can get rid of the tearing by enabling TearFree:
> 
>  xrandr --output eDP --set TearFree on
> 
> See the amdgpu (4) manpage for more information about TearFree.

Also i forgot to ask. Isnt there an time estimate when can we expect scatter
scanout support for Raven ?

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

vr00m (vmuppalla@outlook.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vmuppalla@outlook.com

--- Comment #11 from vr00m (vmuppalla@outlook.com) ---
ICYMI, I was able to solve the tearing problem with raven ridge using
iommu=soft boot param.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #12 from Michel Dänzer (michel@daenzer.net) ---
(In reply to vr00m from comment #11)
> ICYMI, I was able to solve the tearing problem with raven ridge using
> iommu=soft boot param.

Tearing isn't related to the IOMMU. Scatter/gather scanout support for Raven
Ridge is landing now, maybe you're running a development snapshot kernel which
has it already?

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #13 from Haxk20 (haxk612@gmail.com) ---
(In reply to Michel Dänzer from comment #12)
> (In reply to vr00m from comment #11)
> > ICYMI, I was able to solve the tearing problem with raven ridge using
> > iommu=soft boot param.
> 
> Tearing isn't related to the IOMMU. Scatter/gather scanout support for Raven
> Ridge is landing now, maybe you're running a development snapshot kernel
> which has it already?

Could you please point us to the patch series that implements scatter/gather
scanout support for Raven Ridge ? I havent found it in rc4 nor in drm-next-5.4

Thank you.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #14 from Alex Deucher (alexdeucher@gmail.com) ---
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-5.4&id=e4c4073b0139d055d43a9568690fc560aab4fa5c
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-5.4&id=3d1b8ec76b8f4f91641fd87cc19cd980426a2060
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-5.4&id=ddcb7fc62f4be99faedfa1764c971a2f31468962
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-5.4&id=1c4259159132ae4ceaf7c6db37a6cf76417f73d9
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-5.4&id=f2bd8a0ed7e79579d61cea01bab2dfb09099d379

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #15 from Haxk20 (haxk612@gmail.com) ---
I have tried manually patching 5.3rc4 and even compiling drm-next-5.4 branch
but sadly i still get tearing on the screen.
Is there a config option to enable it or its enabled by default ?
And as before TearFree fixes the tearing but causes stuttering sometimes so not
perfect solution by any means.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #16 from Haxk20 (haxk612@gmail.com) ---
I just tried linux kernel from master and no improvement.
Games still produce tearing  even with Vsync on or off.
Only way to get rid of it is TearFree set to on.
Is there something im missing or what ?

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

Haxk20 (haxk612@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #17 from Haxk20 (haxk612@gmail.com) ---
My bad. I just replaced the panel inside the laptop with 120Hz one and tearing
is gone.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

Haxk20 (haxk612@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|CODE_FIX                    |---

--- Comment #18 from Haxk20 (haxk612@gmail.com) ---
Well i was blind it seems. The tearing is small but still is surely there
sadly. Tearing is gone if using just iGPU. When using dGPU with PRIME then
tearing is there.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #19 from Haxk20 (haxk612@gmail.com) ---
And yes im running linux kernel from master so the DRM patches for
scatther/gather are there. Still tearing even tho they are there.
Help ?

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

Haxk20 (haxk612@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|5.1 rc6 and                 |git master
                   |drm-next-5.2-wip            |

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

Haxk20 (haxk612@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |CODE_FIX

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=203471

Haxk20 (haxk612@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|CODE_FIX                    |---

--- Comment #20 from Haxk20 (haxk612@gmail.com) ---
Can we get help on this ? This is a kind of bad bug because it seems to happen
in some games and in some it does not.
Not only that but it started happening in video too on firefox and that is
really horrible.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #21 from Michel Dänzer (michel@daenzer.net) ---
(In reply to Haxk20 from comment #20)
> Not only that but it started happening in video too on firefox and that is
> really horrible.

Sounds like you're referring to
https://gitlab.freedesktop.org/xorg/xserver/issues/924 ? I thought we'd just
established that's not using PRIME, in which case it's probably not directly
related to this.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #22 from Haxk20 (haxk612@gmail.com) ---
(In reply to Michel Dänzer from comment #21)
> (In reply to Haxk20 from comment #20)
> > Not only that but it started happening in video too on firefox and that is
> > really horrible.
> 
> Sounds like you're referring to
> https://gitlab.freedesktop.org/xorg/xserver/issues/924 ? I thought we'd just
> established that's not using PRIME, in which case it's probably not directly
> related to this.

Yes. I will reopen that bug again as you closed it but well its not solved yet.

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[Bug 203471] Tearing on Raven Ridge and RX560X PRIME setup even with Vsync enabled

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203471

--- Comment #23 from Haxk20 (haxk612@gmail.com) ---
For people wondering yes this is still an issue. The bug is 1 year old now. 
scatter/gather support has been enabled in the kernel for a long time now yet
its still broken.

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