strange phenomenon with primus + nvidia-tesla

[Patrice Duroux]

More progress on the trouble, now 'optirun glxgears' is working even after some
reboots (not clear why unless an update in sid since yesterday). But now here is
what I am getting looking at journalctl each time closing the glxgears X11
window:

nov. 16 15:07:09 hp-dark systemd[1]: Created slice system-systemd\x2dcoredump.slice.
nov. 16 15:07:09 hp-dark systemd[1]: Started Process Core Dump (PID 3612/UID 0).
nov. 16 15:07:10 hp-dark kernel: nvidia-modeset: Unloading
nov. 16 15:07:10 hp-dark kernel: nvidia-nvlink: Unregistered the Nvlink Core, major device number 241
nov. 16 15:07:10 hp-dark kernel: bbswitch: disabling discrete graphics
nov. 16 15:07:10 hp-dark kernel: pci 0000:01:00.0: Refused to change power state, currently in D0
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129532] [ERROR][XORG] (EE)
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129551] [ERROR][XORG] (EE) Backtrace:
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129556] [ERROR][XORG] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x139) [0x556c1ac5d2c9]
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129561] [ERROR][XORG] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7f7885c6355f]
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129565] [ERROR][XORG] (EE) 2: /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.418.87.01 (_nv015glcore+0x141a0) [0>
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129569] [ERROR][XORG] (EE) 3: /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.418.87.01 (_nv015glcore+0x1437e) [0>
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129574] [ERROR][XORG] (EE) 4: /usr/lib/x86_64-linux-gnu/nvidia/libGL.so.1 (glXCreateNewContext+0x9c18) [0x7f788>
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129578] [ERROR][XORG] (EE)
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129582] [ERROR][XORG] (EE) Segmentation fault at address 0x8
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129585] [ERROR][XORG] (EE)
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129589] [ERROR][XORG] (EE) Caught signal 11 (Segmentation fault). Server aborting
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129593] [ERROR][XORG] (EE)
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129596] [ERROR][XORG] (EE)
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129601] [ERROR][XORG] (EE) Please also check the log file at "/var/log/Xorg.8.log" for additional information.
nov. 16 15:07:10 hp-dark bumblebeed[707]: [  231.129605] [ERROR][XORG] (EE)
nov. 16 15:07:10 hp-dark systemd-coredump[3613]: Process 3586 (Xorg) of user 0 dumped core.
                                                 
                                                 Stack trace of thread 3586:
                                                 #0  0x00007f7885ac8081 __GI_raise (libc.so.6)
                                                 #1  0x00007f7885ab3535 __GI_abort (libc.so.6)
                                                 #2  0x0000556c1ac5fdea OsAbort (Xorg)
                                                 #3  0x0000556c1ac65903 n/a (Xorg)
                                                 #4  0x0000556c1ac66769 FatalError (Xorg)
                                                 #5  0x0000556c1ac5d201 n/a (Xorg)
                                                 #6  0x00007f7885c63510 __restore_rt (libpthread.so.0)
                                                 #7  0x00007f7884189460 n/a (libnvidia-glcore.so.418.87.01)
                                                 #8  0x00007f788418963e n/a (libnvidia-glcore.so.418.87.01)
                                                 #9  0x00007f78852ab588 n/a (libGL.so.1)
                                                 #10 0x00007f78853220d5 n/a (libGL.so.1)
                                                 #11 0x00007f7886bc6965 _dl_fini (ld-linux-x86-64.so.2)
                                                 #12 0x00007f7885aca720 __run_exit_handlers (libc.so.6)
                                                 #13 0x00007f7885aca85a __GI_exit (libc.so.6)
                                                 #14 0x00007f7885ab4bc2 __libc_start_main (libc.so.6)
                                                 #15 0x0000556c1aaec67a _start (Xorg)
nov. 16 15:07:10 hp-dark systemd[1]: systemd-coredump at 0-3612-0.service: Succeeded.