Comment # 3 on bug 1222442 from Michael Pujos

Also of note, there is a coredump that as generated (in only 1 of the 3
crashes) but coredumpctl says it is inaccessible while the file exists:

  Storage:
/var/lib/systemd/coredump/core.Xorg\x2ebin.1000.140a9d06219f4ea99ea51127a7f00da7.11338.1712563570000000.zst
(inaccessible)
       Message: Process 11338 (Xorg.bin) of user 1000 dumped core.

                Stack trace of thread 11338:
                #0  0x00007f63b22949ec __pthread_kill_implementation (libc.so.6
+ 0x949ec)
                #1  0x00007f63b2241176 raise (libc.so.6 + 0x41176)
                #2  0x00007f63b2228917 abort (libc.so.6 + 0x28917)
                #3  0x0000555e1e464efc n/a (/usr/bin/Xorg.bin + 0x1dbefc)
                #4  0x00007ffee9bf4ba0 n/a (n/a + 0x0)
                ELF object binary architecture: AMD x86-64



The filename has a weird escaped character with \x, but the file do exist:

/var/log> ll 
/var/lib/systemd/coredump/core.Xorg\\x2ebin.1000.140a9d06219f4ea99ea51127a7f00da7.11338.1712563570000000.zst 
-rw-r----- 1 root root 6.1M Apr  8 10:06
'/var/lib/systemd/coredump/core.Xorg\x2ebin.1000.140a9d06219f4ea99ea51127a7f00da7.11338.1712563570000000.zst'