Bug 90182

Created attachment 115335 [details]
GLXINFO of Intel

Created attachment 115336 [details]
GDB Trace for openglunderqml

Created attachment 115337 [details]
GDB Trace for kdenlive using KWin and OpenGL

Created attachment 115339 [details]
GDB Trace for kdenlive using KWin and Xrender

Please attach at least one new gdb trace with debugging symbols available for /usr/lib/xorg/modules/dri/radeonsi_dri.so.

I tried building mesa with debug symbols but somehow gdb says that there are still none for /usr/lib/xorg/modules/dri/radeonsi_dri.so

This is what I did: 
I used the archlinux PKGBUILD and added --enable-debug to the configure options and 
added "-g -O2" to CFLAGS and CXXFLAGS respectively. This gave me a few packages I then installed. The packages were much larger than the original arch ones so I think the symbols got built.
But when I do LANG=C gdb info /usr/lib/xorg/modules/dri/radeonsi_dri.so
I still get no sysmbols found: 
GNU gdb (GDB) 7.9
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from info...(no debugging symbols found)...done.
"/usr/lib/xorg/modules/dri/radeonsi_dri.so" is not a core dump: File format not recognized

Any idea what I did wrong? (I'll attach the PKGBUILD and my makepkg.conf)

Created attachment 115367 [details]
Modified PKGBUILD for debug build of mesa

Created attachment 115368 [details]
Makepkg.conf used for building mesa

(In reply to Paul from comment #6)
> "/usr/lib/xorg/modules/dri/radeonsi_dri.so" is not a core dump: File format
> not recognized

It says it's not a core dump, which is correct. Have you tried getting a backtrace of the crash again?

Created attachment 115369 [details]
Radeonsi debug log (hopefully with symbols)

I "think" it worked:

#3  radeon_drm_cs_emit_ioctl (param=param@entry=0x689970) at radeon_drm_winsys.c:594
        ws = 0x689970
        cs = <optimized out>
        i = <optimized out>
#4  0x00007fffdf12a157 in impl_thrd_routine (p=<optimized out>) at ../../../../../include/c11/threads_posix.h:87
        pack = {func = 0x7fffdf12a920 <radeon_drm_cs_emit_ioctl>, arg = 0x689970}

Paul small tip from a fellow Arch user:
The quickest/easiest way to get debug symbols is to add 'debug' in the OPTIONS array of the PKGBUILD and rebuild the package [1]. This way separate *debug* packages will be created.

The configure's --enable-debug does something a big different :-)

[1] https://wiki.archlinux.org/index.php/Debug_-_Getting_Traces#PKGBUILD

Thanks Emil, I tried that just now but somehow I still got the whole packages presumably with the symbols included. 
Might be because I wasn't aware that you could add that PKGBUILD option and edited my makepkg.conf instead. Anyway I hope I got something useful with the last trace. :-)

Please attach the /var/log/Xorg.0.log file corresponding to the problem.

Created attachment 115392 [details]
Xorg.0.log after command execution

This is my Xorg.log after I executed LANG=C R600_DEBUG=cs DRI_PRIME=1 QSG_INFO=1 gdb  '/home/paul/hybrid test/build-openglunderqml-Desktop-Debug/openglunderqml'

Created attachment 116720 [details]
Updated GDB trace for openglunderqml

Hi everyone!
Here is an updated trace created under Kubuntu 15.04. I did this because it's way easier getting debugging symbols here (and sddm stopped working on arch for some reason)
I'll also attach the new updated versions of glxinfo and Xorg.0.log
Cheers!

Created attachment 116721 [details]
Updated glxinfo Intel

Created attachment 116722 [details]
Updated glxinfo radeon

Created attachment 116724 [details]
Updated Xorg.0.log

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You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1216.