[Mesa-dev] [Bug 110849] Flickering triangles in OpenGL apps on Radeon KAVERI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110849

            Bug ID: 110849
           Summary: Flickering triangles in OpenGL apps on Radeon KAVERI
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: heiko at rangun.de
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 144470
  --> https://bugs.freedesktop.org/attachment.cgi?id=144470&action=edit
Screenshot of Minecraft exhibiting the bug

Please apologize my fuzzy description, but I have no plan how to explain it
better. I've already posted this bug on launchpad
(https://bugs.launchpad.net/bugs/1831688) but without any reaction.


On (K)Ubuntu 18.04 I get strange triangles in almost all (I guess in
all) apps using OpenGL.

glxinfo | grep 'string\|version' prints the following:

server glx vendor string: SGI
server glx version string: 1.4
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
GLX version: 1.4
    Max core profile version: 4.5
    Max compat profile version: 4.5
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: X.Org
OpenGL renderer string: AMD KAVERI (DRM 2.50.0, 5.0.0-16-generic, LLVM 8.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.2.0-devel
(git-73dda85 2019-06-04 bionic-oibaf-ppa)
OpenGL core profile shading language version string: 4.50
OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.2.0-devel
(git-73dda85 2019-06-04 bionic-oibaf-ppa)
OpenGL shading language version string: 4.50
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.2.0-devel (git-73dda85
2019-06-04 bionic-oibaf-ppa)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

lshw -C display:

 *-display
       description: VGA compatible controller
       product: Kaveri [Radeon R5 Graphics]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 1
       bus info: pci at 0000:00:01.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:43 memory:e0000000-efffffff memory:f0000000-f07fffff
ioport:f000(size=256) memory:feb00000-feb3ffff memory:c0000-dffff

journalctl -p err -xb:

Jun 04 15:51:49 alischa kernel: ACPI BIOS Error (bug): Could not resolve
[\_SB.PCI0.VGA.LCD._BCM.AFN7], AE_NOT_FOUND (20181213/psargs-330)
Jun 04 15:51:49 alischa kernel: ACPI Error: Method parse/execution failed
\_SB.PCI0.VGA.LCD._BCM, AE_NOT_FOUND (20181213/psparse-531)
Jun 04 15:51:49 alischa kernel: ACPI Error: Evaluating _BCM failed
(20181213/video-364)

Note on oibaf-ppa: the same happens also with the standard repository
packages and using this PPA was an attempt to fix the problem.

I can reproduce this bug in Minecraft (see attached screenshot),
Stellarium, and in Firefox with the page
https://deck.gl/#/examples/core-layers/geojson-layer-paths

I tried all combinations of graphics drivers. fbdev finally used
software rendering (I think it was llvmpipe), which worked correct at
the expense of a very low frame rate.

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