Improve xserver abrt reports

[ofourdan]

Currently, for Xserver crashes, abrt is reporting:

• A backtrace, apparently taken from the Xserver's own backtrace feature
• cpuinfo
• dmesg
• dso_list
• etc_X11_xorg_conf_d.tar.gz
• usr_share_xorg_conf_d.tar.gz

But that's missing an important bit, the actual logs.

Unfortunately, depending on the type of Xserver (Xorg or Xwayland which are the two main Xservers we're interested in), the logs are not found at the same location...

For Xorg, the Xorg.<x>.log (where is the display number) are found either in /var/log/ or in ~/.local/share/xorg/

For Xwayland, there is no log file, everything is sent to stderr which ends up in journalctl under the gnome-shell domain (when gnome-shell/mutter is the Wayland compositor, which is the case in Fedora).

Also, previously, the Xserver would catch all crashes and generate the backtrace itself. However, recent versions of the Xserver (1.19) will not prevent a coredump anymore (https://gitlab.freedesktop.org/xorg/xserver/commit/9c7288793) so ideally abrt should use that with gdb to get a much better backtrace than the Xserver itself can provide.

So, long story short, I think for the Xserver (either Xorg or Xwayland), we'd need:

• the Xorg logs (even if irrelevant for Xwayland)
• journalctl /usr/bin/gnome-shell around the time of the crash (like a 5 mins before and after window)
• A gdb backtrace of the crash instead of the Xserver's own backtrace which is incomplete and often misleading.