Thanks. I think I can see the problem now.
The first thing that happens is that gdm3 tries to start a Wayland login
screen ('gnome-shell' process) and fails because the Nvidia driver
doesn't support KMS:
Oct 23 11:59:14 efthimios-GA-78LMT-USB3 gnome-shell[1688]:
meta_kms_resources_init failed: Calling drmModeGetResources() failed, assuming
we have no outputs
Oct 23 11:59:14 efthimios-GA-78LMT-USB3 gnome-shell[1688]: Failed to create
backend: No GPUs with outputs found
That is not a bug. What it should do next (and does on my machine) is
then try again to start the login screen using X instead. However I
can't see that in your log. You might have something odd installed or
preventing the fallback from working.
Please:
1. Report the bug to the gdm developers here:
https://gitlab.gnome.org/GNOME/gdm/issues
and then tell us the new bug ID.
2. Try this as a workaround: edit /etc/gdm3/custom.conf and uncomment
the line:
#WaylandEnable=false
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https://bugs.launchpad.net/bugs/1798790
Title:
Ubuntu 18.10 login screen never appears when using the Nvidia driver
Status in gdm3 package in Ubuntu:
Incomplete
Status in mutter package in Ubuntu:
Incomplete
Bug description:
The boot process hangs with the last message being "started bpfilter".
There is unusual Network activity during that time. The light of the
WiFi adapter is blinking a lot.
I am not sure the problem is with the gdm3 package. As a matter of
fact, I would remove it and let someone more experienced to set it.
I'm afraid I might break something, though.
The specific steps or actions you took that caused you to encounter the
problem: 1. Boot Ubuntu 18.10 with the Nvidia proprietary drivers
installed.
The behavior you expected: I expected Ubuntu 18.10 to boot normally.
The behavior you actually encountered: The computer gets stuck in a
command-like environment with the last message being "started
bpfilter". You can't type any commands.
I have found that uninstalling the Nvidia proprietary drivers by going
into recovery mode fixes the issue.
Booting with the earlier kernel doesn't fix the issue. Installing the
earlier v.340 driver also doesn't fix the issue.
This (https://askubuntu.com/questions/1032639/ubuntu-18-04-stuck-in-
boot-after-starting-gnome-display-manager-on-intel-graphic) seems
relevant. This is where I found the "solution".
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1798790/+subscriptions
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