Hello Daniel,

here you can find the link:

https://errors.ubuntu.com/user/a0bccc0d41c89b42afbe332929a7f00566720fe2fcfc8f4ca657778404328e77f704f6088efe855865488a2f9635243b26b54e543fe6e58c26f7de6c73d1df8c

Thanks,
Luca



On Mon, Aug 17, 2020 at 5:55 AM Daniel van Vugt <email address hidden>
wrote:

> 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.
>
>
> ** Changed in: gdm3 (Ubuntu)
>        Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1891771
>
> Title:
>   gdm3 crashes after upgrade from bionic to focal but lightdm and sddm
>   work fine
>
> Status in gdm3 package in Ubuntu:
>   Incomplete
>
> Bug description:
>   Hi all,
>
>   after upgrading from bionic to focal I switched from lightdm to gdm3
>   to use Gnome Desktop.
>
>   Gdm3 crashes systematically when enabled as default display-manager
>   with a blank display with the following message:
>
>   Oh no! Something has gone wrong.
>   A problem has occurred and the system can't recover. Please contact a
> system administrator.
>
>   In /etc/gdm3/custom.conf I've tried the following settings:
>
>   WaylandEnable=false   -> crash
>   WaylandEnable=true    -> crash
>
>   I've enabled Debug but I cannot find any correlation with the error
>   message.
>
>   Gdm version 3.34.1-1ubuntu1.
>
>   Switching to another display manager like lightdm or sddm solves the
> problem.
>   I've a Dell Inspiron with Intel U620 graphic card.
>   The problems happens with the laptop display alone but also with
> external monitor connected via HDMI.
>
>   Thanks in advance for your help.
>
>   Regards
>   Luca
>   dpkg
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 20.04
>   Package: gdm3 3.34.1-1ubuntu1
>   ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
>   Uname: Linux 5.4.0-42-generic x86_64
>   ApportVersion: 2.20.11-0ubuntu27.6
>   Architecture: amd64
>   CasperMD5CheckResult: skip
>   CurrentDesktop: ubuntu:GNOME
>   Date: Sat Aug 15 23:06:37 2020
>   InstallationDate: Installed on 2016-12-14 (1340 days ago)
>   InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
> (20160719)
>   SourcePackage: gdm3
>   UpgradeStatus: Upgraded to focal on 2020-08-11 (4 days ago)
>   mtime.conffile..etc.gdm3.custom.conf: 2020-08-15T00:22:27.116452
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1891771/+subscriptions
>