[Bug 251836] x11-wm/plasma5-kwin: freezes with iris (Intel Gen8+)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251836

Jan Beich <jbeich at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|graphics/mesa-dri Intel     |x11-wm/plasma5-kwin:
                   |IRIS                        |freezes with iris (Intel
                   |                            |Gen8+)

--- Comment #14 from Jan Beich <jbeich at FreeBSD.org> ---
(In reply to Gleb Popov from comment #10)
Thanks for the steps. I can reproduce.

  $ kwin_x11
  OpenGL vendor string:                   Intel
  OpenGL renderer string:                 Mesa Intel(R) HD Graphics 530 (SKL
GT2)
  OpenGL version string:                  4.6 (Compatibility Profile) Mesa
21.0.0-devel (git-9ac8f8f490d)
  OpenGL shading language version string: 4.60
  Driver:                                 Intel
  GPU class:                              Unknown
  OpenGL version:                         4.6
  GLSL version:                           4.60
  Mesa version:                           21.0
  X server version:                       1.20.10
  Requires strict binding:                yes
  GLSL shaders:                           yes
  Texture NPOT support:                   yes
  Virtual Machine:                        no
  Freeze in OpenGL initialization detected
  Application::crashHandler() called with signal 6; recent crashes: 1
  QSocketNotifier: Invalid socket 10 with type Read, disabling...
  QSocketNotifier: Invalid socket 11 with type Read, disabling...
  The X11 connection broke (error 1). Did the X11 server die?

Current workaround:

  $ cd /usr/local/bin
  $ mv kwin_x11 kwin_x11.orig
  $ cat <<\EOF >kwin_x11
  #! /bin/sh
  export MESA_LOADER_DRIVER_OVERRIDE=i965
  exec kwin_x11.orig "$@"
  EOF
  $ chmod +x kwin_x11

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