I have since upgraded to ubuntu 22.04 and I do not see the problem there.
$ apt-cache policy libgl1-mesa-dri
libgl1-mesa-dri:
Installed: 23.0.4-0ubuntu1~22.04.1
Candidate: 23.0.4-0ubuntu1~22.04.1
Version table:
*** 23.0.4-0ubuntu1~22.04.1 500
500 http://ca.archive.ubuntu.com/ubuntu jammy-updates/main amd64
Packages
500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64
Packages
100 /var/lib/dpkg/status
On Mon, Aug 28, 2023 at 3:06 PM Oibaf <1882...@bugs.launchpad.net>
wrote:
> Ken, Ubuntu 20.04 now has mesa 21.2.6-0ubuntu0.1~20.04.2 , can you try
> it, is this still an issue for you?
>
>
> ** Changed in: mesa (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1882466
>
> Title:
> mythtv frontend crash when calling glClear in iris driver
>
> Status in mesa package in Ubuntu:
> Incomplete
>
> Bug description:
> on startup, mythfrontend crashes repeatedly when calling glClear - the
> following traceback:
> Core was generated by `/usr/bin/mythfrontend.real'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 0x00007f9495ca0838 in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> [Current thread is 1 (Thread 0x7f9551e59940 (LWP 4164))]
> (gdb) bt
> #0 0x00007f9495ca0838 in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> #1 0x00007f9495ca2ebf in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> #2 0x00007f9495e65de4 in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> #3 0x00007f9495c7ce5d in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> #4 0x00007f9495c7da95 in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> #5 0x00007f94952bc774 in ?? () from
> /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
> #6 0x00007f955f79e713 in QOpenGLFunctions::glClear
> (this=0x555cb36e8160,
> mask=16384)
> at /usr/include/x86_64-linux-gnu/qt5/QtGui/qopenglfunctions.h:628
> #7 0x00007f955f798090 in MythRenderOpenGL::ClearFramebuffer (
> this=0x555cb36e8150) at opengl/mythrenderopengl.cpp:801
> #8 0x00007f955f78a3f2 in MythOpenGLPainter::Begin (this=0x555cb398dac0,
> Parent=0x555cb399d1d0) at opengl/mythpainteropengl.cpp:136
>
> I can work around this problem with this:
> export MESA_LOADER_DRIVER_OVERRIDE=i965
> (then running mythfrontend works fine)
>
> sorry for the lack of debug symbols in iris_dri.so
> if there is a .deb around with a debug version i can generate the
> traceback again
> not sure if the problem belongs to iris_dri.so or to mythfrontend but I
> put it here due to the workaround.
>
>
> $ lsb_release -rd
> Description: Ubuntu 20.04 LTS
> Release: 20.04
>
> $ apt-cache policy libgl1-mesa-dri
> libgl1-mesa-dri:
> Installed: 20.0.4-2ubuntu1
> Candidate: 20.0.4-2ubuntu1
> Version table:
> *** 20.0.4-2ubuntu1 500
> 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
> 100 /var/lib/dpkg/status
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1882466/+subscriptions
>
>
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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1882466
Title:
mythtv frontend crash when calling glClear in iris driver
Status in mesa package in Ubuntu:
Incomplete
Bug description:
on startup, mythfrontend crashes repeatedly when calling glClear - the
following traceback:
Core was generated by `/usr/bin/mythfrontend.real'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f9495ca0838 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
[Current thread is 1 (Thread 0x7f9551e59940 (LWP 4164))]
(gdb) bt
#0 0x00007f9495ca0838 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#1 0x00007f9495ca2ebf in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#2 0x00007f9495e65de4 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#3 0x00007f9495c7ce5d in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007f9495c7da95 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x00007f94952bc774 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#6 0x00007f955f79e713 in QOpenGLFunctions::glClear (this=0x555cb36e8160,
mask=16384)
at /usr/include/x86_64-linux-gnu/qt5/QtGui/qopenglfunctions.h:628
#7 0x00007f955f798090 in MythRenderOpenGL::ClearFramebuffer (
this=0x555cb36e8150) at opengl/mythrenderopengl.cpp:801
#8 0x00007f955f78a3f2 in MythOpenGLPainter::Begin (this=0x555cb398dac0,
Parent=0x555cb399d1d0) at opengl/mythpainteropengl.cpp:136
I can work around this problem with this:
export MESA_LOADER_DRIVER_OVERRIDE=i965
(then running mythfrontend works fine)
sorry for the lack of debug symbols in iris_dri.so
if there is a .deb around with a debug version i can generate the traceback
again
not sure if the problem belongs to iris_dri.so or to mythfrontend but I put
it here due to the workaround.
$ lsb_release -rd
Description: Ubuntu 20.04 LTS
Release: 20.04
$ apt-cache policy libgl1-mesa-dri
libgl1-mesa-dri:
Installed: 20.0.4-2ubuntu1
Candidate: 20.0.4-2ubuntu1
Version table:
*** 20.0.4-2ubuntu1 500
500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
100 /var/lib/dpkg/status
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1882466/+subscriptions
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