Public bug reported:
About a month ago, GDM ceased to work. I opened another issue here
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1908717 but due to
me using oibaf's ppa it was considered prudent to discard that issue and
re-open after I removed the ppa and restored Ubuntu's dist packages.
Upon boot, gdm goes to a black screen with a cursor. This screen
flickers to show the underlying tty and on each flicker the cursor
position resets to the bottom right. It will do this a number of times
until GDM dies and I'm left on a tty.
I can start my window manager (sway) without issue from the console
still and everything functions normally.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gdm3 3.36.3-0ubuntu0.20.04.2
ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: sway
Date: Thu Jan 7 15:55:43 2021
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal third-party-packages wayland-session
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https://bugs.launchpad.net/bugs/1910559
Title:
GDM3: Black screen with blinking cursor
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