Public bug reported:
Upgrading to 18.04 (Bionic) desktop on a machine running 17.10 (Artful)
and originally installed with Xenial 16.04. Previous release (and other)
upgrades had gone without issue.
Run the installer, upgrades to 18.04, and reboots.
Instead of returning to graphical Ubuntu login prompt, booting starts
but gets stuck in a state where the screen is flashing every few seconds
between light grey and black.
After various experimentation, discovered that the graphical login prompt would
return as wanted if I did:
sudo apt-get remove nvidia-340
Note - the machine has Intel graphics, HD Graphics 630 (rev 04).
Why was nvidia-340 ever installed? I believe I setup this machine by
exporting a package list from another machine that DID have nvidia
graphics and then importing it (via synaptics package manager) to the
machine in question.
I believe that nvidia drivers have been installed for all the earlier
Ubuntu releases, but only in 18.04 did they cause an issue.
I tested this theory on another machine with Intel graphics running
18.04, and sure enough installing nvidia-340 broke the graphical login
prompt on reboot - and removing nvidia-340 fixed it again.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: nvidia-340 (not installed)
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Sat Jun 9 18:47:58 2018
InstallationDate: Installed on 2017-06-30 (345 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: nvidia-graphics-drivers-340
UpgradeStatus: Upgraded to bionic on 2018-05-31 (10 days ago)
** Affects: nvidia-graphics-drivers-340 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1776044
Title:
nvidia-340 crashes display in 18.04 Bionic when no Nvidia GPU present
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