I believe I have found the culprit. Not happy to say that it looks like
it was a configuration change I made to try to fix the ubiquitous
screen-tearing and frame synch problems that some applications have. I
*believed* I had reverted all the changes I made when I saw they hadn't
fixed the issue, apparently I missed one. Oddly, the machine had booted
up into a proper GDM session several times since that attempt. In any
case, I went back over my research and double-checked anything that we
hadn't already covered and found an article about adding a zz-nvidia-
modeset.conf file in the modprobe.d folder. This had one working line in
it:
"options nvidia_drm modeset=1"
Once commented that line out and updated initramfs the machine was able
to make all the way into the full GDM session again.
I am very sorry to wasted your time on this problem that was obviously
due to an oversight on my part.
** Changed in: nvidia-graphics-drivers-390 (Ubuntu)
Status: Incomplete => Invalid
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to nvidia-graphics-drivers-390 in Ubuntu.
https://bugs.launchpad.net/bugs/1777378
Title:
[nvidia] GDM no longer presents GUI login Ubuntu 18.04
Status in nvidia-graphics-drivers-390 package in Ubuntu:
Invalid
Bug description:
Background:
Did a clean install of Ubuntu 18.04, standard Gnome desktop. Used
nVidia proprietary drivers from Ubuntu repo. Worked quite well for
over two weeks. When booting up on Friday 15th June, 2018 no longer
had a GUI login screen. There was just a few lines in tty1. Can still
login to other terminals and through SSH.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gdm3 3.28.2-0ubuntu1.2
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Sun Jun 17 22:53:22 2018
InstallationDate: Installed on 2018-05-20 (28 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.gdm3.custom.conf: 2018-05-31T00:51:08.204556
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-05-20 (28 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
NonfreeKernelModules: nvidia_modeset nvidia
Package: gdm3 3.28.2-0ubuntu1.2
PackageArchitecture: amd64
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Tags: bionic
Uname: Linux 4.15.0-23-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
mtime.conffile..etc.gdm3.custom.conf: 2018-06-18T00:27:55.234654
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-05-20 (28 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
NonfreeKernelModules: nvidia_modeset nvidia
Package: mutter
PackageArchitecture: amd64
ProcEnviron:
LANG=en_US.UTF-8
TERM=xterm-256color
PATH=(custom, no user)
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Tags: bionic
Uname: Linux 4.15.0-23-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
mtime.conffile..etc.gdm3.custom.conf: 2018-06-18T00:27:55.234654
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