[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

            Bug ID: 98351
           Summary: LibreOffice' OpenGL backend hangs GPU (ring 0&3
                    stalled)
           Product: Mesa
           Version: 12.0
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: linuxhippy@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Starting LibreOffice Draw with their opengl rendering backend enabled hangs the
GPU: https://youtu.be/6C_qZdA6WdY

This happend on an AMD MULLINS based laptop running Fedora 24 (kernel 4.7.?,
mesa 12.0.3).

Steps to reproduce:
- Download LibreOffice 5.2.3
- Install it
- Start libreoffice writer
- Enable OpenGL backend (menu -> tools -> options -> view -> opengl for all
rendering, disable blacklist)
- start libreoffice draw -> hang

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

--- Comment #1 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Thank you for the report. I cannot reproduce this on Tonga. Does this still
happen for you with a later kernel and/or Mesa git? There have been some hang
fixes relatively recently.

Are there any messages in dmesg before the "ring stalled" messages?

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

--- Comment #2 from Clemens Eisserer <linuxhippy@gmail.com> ---
I've just tried to reproduce - and the issue seems to be gone with kernel 4.8.4
:)

Thanks :)

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

--- Comment #3 from Dieter Nützel <Dieter@nuetzel-hh.de> ---
Sorry that I step in, here.

r600g - NI/Turks XT
But how have you got enabled OpenGL by all means in LO?

I have openSUSE 13.2 + all devel stuff...
LO 5.2.2.2.0+
Latest stable kernel: 4.8.6-5.g1d89b44-default
Mesa git, etc. pp.

OpenGL is enabled
OpenGL force is enabled

But any time (since ever?) I get: OpenGL is currently _disabled_...???
Update to LO 5.2.3.x.x?

Thanks,
Dieter

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

--- Comment #4 from Clemens Eisserer <linuxhippy@gmail.com> ---
Worked out of the box - maybe radeonsi supports some extensions LO requires and
r600 is missing?

After all, at least with mesa LO's OpenGL backend is not worth the trouble - it
is slow and rendering isn't pixel-perfect.

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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--- Comment #5 from Tomaz Vajngerl <quikee@gmail.com> ---
Hi,

I'm the guy that works on the OpenGL code in LibreOffice and I have the same
problem on my machine with radeonsi. The problem is with area scale shader [1]
(which is used for scaling images in the document) - more specifically with the
arrays at line 51, 52, 54, 55. I changed the scale algorithm to not use any
arrays but this still seems to be nouveau to the OpenGL driver as the shader
works as expected with intel or nouveau driver as well as nvidia and amd
drivers on windows, but OTOH not intel driver on windows. I also managed to get
it working if I reduce the array to 16 or less.

[1]
https://cgit.freedesktop.org/libreoffice/core/tree/vcl/opengl/areaScaleFragmentShader.glsl?h=libreoffice-5-2-3#n51

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

--- Comment #6 from Tomaz Vajngerl <quikee@gmail.com> ---
I'm using "Radeon R7 370" on Fedora 25

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

--- Comment #7 from Marek Olšák <maraeo@gmail.com> ---
Does this happen with latest mesa and llvm?

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[Bug 98351] LibreOffice' OpenGL backend hangs GPU (ring 0&3 stalled)

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https://bugs.freedesktop.org/show_bug.cgi?id=98351

Timothy Arceri <t_arceri@yahoo.com.au> changed:

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

--- Comment #8 from Timothy Arceri <t_arceri@yahoo.com.au> ---
(In reply to Marek Olšák from comment #7)
> Does this happen with latest mesa and llvm?

Assuming it was fixed as per comment 2 and closing.

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