I have an ubuntu 18 04 (updated to 20 04 1 LTS while trying to fix issue) in virtualbox, and it started to crash since today, i think it started after i ok'ed a software update (minor, not distro upgrade).
The gnome shell terminates, i get back to the login. It mainly seems to happen when i open a webbrowser, but also other situations, eg. opening an unconfigured thunderbird.
A few times, i also got different error windows within gnome "system error detected" or similar:
I did a separate Question on the different error-messages:
'System Program Problem Detected' vs "Sorry, Ubuntu * has experienced an internal error"
At first, i tried different things like apt-get update/upgrade, where i got some
Hash Sum mismatch errors . Lots of experimenting with clear and –fix-missing got me around this, but the crashing persisted. So after a snapshot in virtualbox, i did the upgrade to 20 04, hoping that would fix the unknown problem along the way.
But no, it did not.
I found some tips recommending to look at the output of
journalctl -e and other logfiles. But there's way too much stuff, and i don't know what to look into and what to look over.
/var/log/boot.log i see some fails,
Failed to start Snap Daemon. [repeatedly] Failed to start Docker Application Container Engine. [repeatedly] Failed to start Wait until snapd is fully seeded. Failed to start containerd container runtime. Failed to start GRUB failed boot detection.
i see some logs in
_usr_bin_gnome-shell.1000.crash _usr_bin_gnome-software.1000.crash _usr_lib_gdm3_gdm-session-worker.0.crash _usr_lib_policykit-1_polkitd.0.crash
How could i get closer to finding the problem's source?
Wayland and Switcheroo, not that i know of. It is a default 1804 install.
A propos Switcheroo, i am on a Dell Precision with Quadro M2000M. Switchable Graphics is "off" in the bios, i tried "on", same effect.
~$ dpkg -l *irtualbox* Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-========================-============-============-================================= un virtualbox-guest-dkms <none> <none> (no description available) un virtualbox-guest-modules <none> <none> (no description available) ~$ ls -al ~/.local/share/gnome-shell/extensions ls: cannot access '/home/toro/.local/share/gnome-shell/extensions': No such file or directory ~$ ls -al /usr/share/gnome-shell/extensions total 20 drwxr-xr-x 5 root root 4096 Okt 7 17:52 . drwxr-xr-x 7 root root 4096 Okt 7 17:56 .. drwxr-xr-x 2 root root 4096 Okt 7 17:52 desktop-icons@csoriano drwxr-xr-x 3 root root 4096 Okt 7 17:45 firstname.lastname@example.org drwxr-xr-x 3 root root 4096 Okt 7 17:45 email@example.com
Virtualbox runs on latest win10x64. I tried different graphics Settings with and without 3d accel., Made no difference.