Ok, I also noticed a coredump file was created in my home directory yesterday in an attempt to enable coredumps. The attached backtrace was generated using the instructions on https://wiki.debian.org/XStrikeForce/XserverDebugging
-- Mvg, Sander Devrieze. Op di 27 apr. 2021 om 13:25 schreef Sander Devrieze < san...@sanderdevrieze.net>: > As there are several crash files in that directory, I tried again to check > the date on a new crash report, but no new files were created: > > -rw------- 1 whoopsie whoopsie 0 apr 26 11:47 > _usr_bin_eid-viewer.1027.uploaded > -rw------- 1 whoopsie whoopsie 0 apr 22 11:24 > _usr_bin_gjs-console.1027.uploaded > -rw-r----- 1 sander whoopsie 25M apr 26 17:22 > _usr_bin_gnome-shell.1027.crash > -rw-rw-r-- 1 sander whoopsie 0 apr 26 17:22 > _usr_bin_gnome-shell.1027.upload > -rw------- 1 whoopsie whoopsie 0 apr 26 17:22 > _usr_bin_gnome-shell.1027.uploaded > -rw-r----- 1 gdm whoopsie 4,9M apr 26 16:11 > _usr_bin_Xwayland.120.crash > -rw-r--r-- 1 gdm whoopsie 0 apr 26 16:11 > _usr_bin_Xwayland.120.upload > -rw------- 1 whoopsie whoopsie 0 apr 26 16:13 > _usr_bin_Xwayland.120.uploaded > -rw-r----- 1 root whoopsie 5,3M apr 26 16:02 _usr_lib_xorg_Xorg.0.crash > -rw-r--r-- 1 root whoopsie 0 apr 26 16:02 > _usr_lib_xorg_Xorg.0.upload > -rw------- 1 whoopsie whoopsie 0 apr 26 16:13 > _usr_lib_xorg_Xorg.0.uploaded > -rw-r----- 1 sander whoopsie 119M apr 23 12:58 > _usr_lib_xorg_Xorg.1027.crash > -rw-r--r-- 1 sander whoopsie 0 apr 22 14:39 > _usr_lib_xorg_Xorg.1027.upload > -rw------- 1 whoopsie whoopsie 0 apr 22 15:24 > _usr_lib_xorg_Xorg.1027.uploaded > -rw-r----- 1 gdm whoopsie 343K apr 26 16:11 > _usr_lib_xorg_Xorg.120.crash > -rw-r--r-- 1 gdm whoopsie 0 apr 26 16:11 > _usr_lib_xorg_Xorg.120.upload > -rw------- 1 whoopsie whoopsie 0 apr 26 16:13 > _usr_lib_xorg_Xorg.120.uploaded > -rw-r----- 1 root whoopsie 178K apr 26 15:59 > _usr_share_session-migration_scripts_01_migrate_from_keyring.0.crash > -rw-r--r-- 1 root whoopsie 0 apr 26 15:59 > _usr_share_session-migration_scripts_01_migrate_from_keyring.0.upload > -rw------- 1 whoopsie whoopsie 0 apr 26 15:59 > _usr_share_session-migration_scripts_01_migrate_from_keyring.0.uploaded > > Maybe no new report is created when there is already a crash report? Can I > safely delete all contents of that directory? Or do you know which crash ID > you need? > > In my attempt to generate a new crash report, I also noticed the gdb > errors are not consistently the same. See attached. The first time the X > Server stalled for a long time and thereafter the Wacom tablet did not work > well. Using the Gimp pen tool, it drew dots instead of a line. I had to > unplug the Wacom tablet to get it working again in a normal manner....and > to get the real crash. > > -- > Mvg, Sander Devrieze. > > > Op di 27 apr. 2021 om 12:00 schreef Sebastien Bacher < > 1926...@bugs.launchpad.net>: > >> Thank you for taking the time to report this bug and helping to make >> Ubuntu better. It sounds like some part of the system has crashed. To >> help us find the cause of the crash please follow these steps: >> >> 1. Look in /var/crash for crash files and if found run: >> ubuntu-bug YOURFILE.crash >> Then tell us the ID of the newly-created bug. >> >> 2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where >> ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. >> Do you find any links to recent problems on that page? If so then please >> send the links to us. >> >> 3. If step 2 also failed then apply the workaround from bug 994921, >> reboot, reproduce the crash, and retry step 1. >> >> Please take care to avoid attaching .crash files to bugs as we are >> unable to process them as file attachments. It would also be a security >> risk for yourself. >> >> ** Changed in: xf86-input-wacom (Ubuntu) >> Status: New => Invalid >> >> -- >> You received this bug notification because you are subscribed to the bug >> report. >> https://bugs.launchpad.net/bugs/1926173 >> >> Title: >> Wacom crashes Xorg >> >> To manage notifications about this bug go to: >> >> https://bugs.launchpad.net/ubuntu/+source/xf86-input-wacom/+bug/1926173/+subscriptions >> > ** Attachment added: "gdb.txt" https://bugs.launchpad.net/bugs/1926173/+attachment/5492768/+files/gdb.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xf86-input-wacom in Ubuntu. https://bugs.launchpad.net/bugs/1926173 Title: Wacom crashes Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xf86-input-wacom/+bug/1926173/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp