** Summary changed:
- [bionic] startx / xinit crashes with GLX backtrace if Composite Disabled in
xorg.conf
+ [bionic] startx / xinit crashes with GLX backtrace if Composite Disabled in
xorg.conf (intel mesa driver)
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Touch
Maybe this is i915/i965 intel driver related. If someone with an in
intel IGP could reproduce this. I have xserver-xorg-video-intel
installed by the way. With not mentioning "intel" explicitly as the
driver in xorg.conf doesn't it automatically uses modesetting or
glamorgl?
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Just had the idea to unload "glx" and see if I can Disable Composite
without crashing Xorg / startx / xinit.
It works!
Here's my xorg.conf:
Section "Module"
Disable "glx"
EndSection
Section "Extensions"
Option "Composite" "0"
EndSection
I'll put my resulting Xorg.0.log as an attachment.
Ho
I suspect libglx0 (transition from libgl1-mesa-glx to libglx0)
Because now we have:
/usr/lib/x86_64-linux-gnu/libGLX.so.0.0.0 (from libglx0 in bionic, new with
bionic)
instead of:
/usr/lib/x86_64-linux-gnu/mesa/ld.so.conf
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1
/usr/lib/x86_64-linux-gnu/mesa/l
Now I remove +s bit from /usr/bin/X, /usr/bin/xinit, /usr/bin/startx,
/usr/bin/Xorg and tried to run Valgrind with it. Honestly I have no idea
about debugging. I just know that valgrind and strace can be somehow use
for it. Hope this helps!
output of valgrind -v startx 1> valgrind_v_startx.txt 2>&
tried with "strace startx"
** Attachment added: "strace startx"
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1754296/+attachment/5072778/+files/strace_startx_001.txt
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Public bug reported:
[New bug filed with ubuntu-bug/apport. However there was nothing to file
against in /var/crashes]
For certain games I disable the Composite extension in my
/etc/X11/xorg.conf when using a non-composited window manager like
openbox, fluxbox or marco. Disabling the Composite ex
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