AW: Xorg core dump Device or resource busy

[Walter Harms]

With "manual start" i mean, starting without X (or with a more simple working setup).
The idea is to test for interference with other applications, if the problem vanishes
this could be an indicator for such a problem.

________________________________________
Von: Mykola Sokolov <nzamb7 at gmail.com>
Gesendet: Donnerstag, 25. Februar 2021 11:57:45
An: Walter Harms
Cc: xorg at lists.x.org
Betreff: Re: Xorg core dump Device or resource busy

Hi Walter,

I don't think that this is a new issue. I think it got worse after replacing mouses and keyboards.
What do you mean by manual start? If I restart a PC or restarting Xorg resolves the issue. But it happens every day.

Mykola Sokolov

чт, 25 февр. 2021 г. в 10:54, Walter Harms <wharms at bfs.de<mailto:wharms at bfs.de>>:
Hi,
some minor questions:
1. Is this a new issue ? (e.g. after a recent update ?)
2. Does this happen also with a manual start ?

re,
 wh
________________________________________
Von: xorg <xorg-bounces at lists.x.org<mailto:xorg-bounces at lists.x.org>> im Auftrag von Mykola Sokolov <nzamb7 at gmail.com<mailto:nzamb7 at gmail.com>>
Gesendet: Donnerstag, 25. Februar 2021 10:10:12
An: xorg at lists.x.org<mailto:xorg at lists.x.org>
Betreff: Xorg core dump Device or resource busy

Hi All,

I'm running Ubuntu 20.04 and periodically Xorg failing with core dump right after boot. I'm using a multiseat setup with 2 wireless keyboards and 2 wireless mouses connected. It looks like frequent mouse polling caused Xorg to slow down. But I have updated the polling interval like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbhid.mousepoll=4"
update-grub

But still, Xorg is failing with core dump and sometimes freezing.
This is from Xorg.0.log

[    22.229] (II) Unloading vesa
[    22.229] (EE) modeset(0): drmSetMaster failed: Device or resource busy
[    22.229] (EE)
Fatal server error:
[    22.229] (EE) AddScreen/ScreenInit failed for driver 0
[    22.229] (EE)
[    22.229] (EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[    22.229] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    22.229] (EE)
[    22.229] (EE) Server terminated with error (1). Closing log file.

This is from gdb:
Reading symbols from /usr/lib/xorg/Xorg...
(No debugging symbols found in /usr/lib/xorg/Xorg)
[New LWP 1294]
[New LWP 1301]
[New LWP 1304]
[New LWP 1303]
[New LWP 1302]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/lib/xorg/Xorg -core :0 -seat seat1 -auth /var/run/lightdm/root/:0 -noliste'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f2053c9ba40 (LWP 1294))]
(gdb) bt
#0  __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f2053f09859 in __GI_abort () at abort.c:79
#2  0x000055ac00e8e1b0 in OsAbort ()
#3  0x000055ac00e935e9 in ?? ()
#4  0x000055ac00e9444a in FatalError ()
#5  0x000055ac00d6c018 in InitOutput ()
#6  0x000055ac00d2dda4 in ?? ()
#7  0x00007f2053f0b0b3 in __libc_start_main (main=0x55ac00d179f0, argc=9, argv=0x7fff526d3138, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff526d3128)
    at ../csu/libc-start.c:308
#8  0x000055ac00d17a2e in _start ()

WIth regards
Mykola Sokolov