Comment # 2 on bug 1200183 from Felix Miata

Kernel command line: root=LABEL=stw-wd12 ipv6.disable=1 net.ifnames=0 noresume
mitigations=auto consoleblank=0 iomem=relaxed 5

Xorg session seems working as expected with 0.6.225-36.1 but on logging out,
Xorg session exits with this:
# tail -n35 Xorg.0.log
[   389.685] (II) event1  - Kensington      Kensington USB/PS2 Orbit: device
removed
[   389.709] (II) event0  - AT Translated Set 2 keyboard: device removed
[   389.724] (II) CHROME(0): Analog (VGA) Power: On
[   389.725] (II) UnloadModule: "libinput"
[   389.725] (II) UnloadModule: "libinput"
[   389.725] (II) UnloadModule: "libinput"
[   389.726] (II) UnloadModule: "libinput"
[   389.768] (EE)
[   389.768] (EE) Backtrace:
[   389.768] (EE) 0: /usr/bin/Xorg.bin (xorg_backtrace+0x7e) [0x557274f87c0e]
[   389.769] (EE) 1: /usr/bin/Xorg.bin (0x557274dae000+0x1e24b9)
[0x557274f904b9]
[   389.769] (EE) 2: /lib64/libc.so.6 (0x7fb746a00000+0x567c0) [0x7fb746a567c0]
[   389.769] (EE) 3: /usr/lib64/xorg/modules/libexa.so (exaOffscreenFree+0x9c)
[0x7fb746175f3c]
[   389.769] (EE) 4: /usr/lib64/xorg/modules/drivers/openchrome_drv.so
(0x7fb7463be000+0x2ce88) [0x7fb7463eae88]
[   389.769] (EE) 5: /usr/lib64/xorg/modules/drivers/openchrome_drv.so
(0x7fb7463be000+0x19eba) [0x7fb7463d7eba]
[   389.769] (EE) 6: /usr/bin/Xorg.bin (0x557274dae000+0xdce98)
[0x557274e8ae98]
[   389.769] (EE) 7: /usr/bin/Xorg.bin (0x557274dae000+0xf6667)
[0x557274ea4667]
[   389.769] (EE) 8: /usr/bin/Xorg.bin (0x557274dae000+0x1486bc)
[0x557274ef66bc]
[   389.769] (EE) 9: /usr/bin/Xorg.bin (0x557274dae000+0x4d13b)
[0x557274dfb13b]
[   389.769] (EE) 10: /lib64/libc.so.6 (0x7fb746a00000+0x405b0)
[0x7fb746a405b0]
[   389.769] (EE) 11: /lib64/libc.so.6 (__libc_start_main+0x8b)
[0x7fb746a40679]
[   389.769] (EE) 12: /usr/bin/Xorg.bin (_start+0x25) [0x557274dfb935]
[   389.769] (EE)
[   389.769] (EE) Segmentation fault at address 0x8
[   389.769] (EE)
Fatal server error:
[   389.769] (EE) Caught signal 11 (Segmentation fault). Server aborting

Consequently, instead of return to TDM greeter, screen goes to vtty login
prompt, so systemctl restart xdm or reboot is required to get Xorg back.

The problem is the same in 15.4, using xf86-video-openchrome-0.6.225-lp154.36.1
from
http://download.opensuse.org/repositories/X11:/XOrg/openSUSE_Leap_15.4/x86_64/
along with all its matching packages.