Thank you for taking the time to report this bug and helping to make
Ubuntu better. It sounds like some part of the system has crashed. To
help us find the cause of the crash please follow these steps:
1. Look in /var/crash for crash files and if found run:
ubuntu-bug YOURFILE.crash
Then tell us the ID of the newly-created bug.
2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where
ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine.
Do you find any links to recent problems on that page? If so then please
send the links to us.
3. If step 2 also failed then apply the workaround from bug 994921,
reboot, reproduce the crash, and retry step 1.
Please take care to avoid attaching .crash files to bugs as we are
unable to process them as file attachments. It would also be a security
risk for yourself.
** Package changed: gdm3 (Ubuntu) => gnome-shell (Ubuntu)
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1910559
Title:
GDM3: Black screen with blinking cursor
Status in gnome-shell package in Ubuntu:
Incomplete
Bug description:
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)
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