mate-screensaver SegFault when it autostarts. Prevents system from sleeping or exiting sleep

[Jonathan Polak]

Expected behaviour
Upon reaching specified amount of time of no activity, screen-saver engages

Actual behaviour: Screensaver crashes with segFault. Black screen results, system cannot enter or exit sleep.

Steps to reproduce the behaviour: allow the screensaver timeout to elapse. Screensaver should turn on. Instead it gives black-screen and prevents sleep from starting

MATE general version 1.26

Package version: Starting with 1.26.0-0ubuntu / previous packages were ok

Linux Distribution: Ubuntu Mate 21.10

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: mate-screensaver 1.26.0-0ubuntu1
ProcVersionSignature: Ubuntu 5.13.0-20.20-generic 5.13.14
Uname: Linux 5.13.0-20-generic x86_64
ApportVersion: 2.20.11-0ubuntu70
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: MATE
Date: Wed Oct 20 13:10:14 2021
InstallationDate: Installed on 2021-02-05 (256 days ago)
InstallationMedia: Ubuntu-MATE 20.10 "Groovy Gorilla" - Release amd64 (20201022)
SourcePackage: mate-screensaver
UpgradeStatus: Upgraded to impish on 2021-10-15 (5 days ago)

[Jonathan Polak (jpolak)]

Reported into Github https://github.com/mate-desktop/mate-screensaver/issues/255

[Norbert (nrbrtx)]

Do you see the same symptoms as in bug 1943369 ?

[Jonathan Polak (jpolak)]

I can't see their syslog, but, from the files they uploaded it shows that their crash involves both libmate-menu and mate-screensaver. I see from my journal that it also involves both of those. Moreover, the SegFaults started happening after update to IMPISH. There are no segFaults in these processes prior

HERE ARE THE journal entires FROM MATE-SCREENSAVER AND LIBMATE-MENU
(attached file) -- started on oct 15, after upgrade to 21.10

[Jonathan Polak (jpolak)]

This bug affects both AMD and Intel architecture. this bug is on AMD, the linked duplicate bug was on intel architecture.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Adam Funk (a-funk)]

I'm having this problem on a laptop that was installed with Ubuntu 21.04, just upgraded to 21.10. Excerpt from syslog attached.

When this happens, I can't figure out a way to get into the computer without shutting down (power button) and restarting. The virtual terminals are unavailable! A workaround would be greatly appreciated, even something hacky like detecting the crash and restarting the screensaver.

[Adam Funk (a-funk)]

Now I don't think the problem is in the mate-screensaver package itself. I reverted to version 1.24.2-0ubuntu1 for a week and still had it happen occasionally: I'd come back to the computer to find a black screen and no amount of typing or mouse-jiggling would bring up the unlock dialog. I have to ssh in and use 'sudo service lightdm restart' to fix it (losing whatever is running in the GUI).

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "Patch from upstream PR #262 on mate-screensaver which purportedly fixes this issue" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1947905

[Norbert (nrbrtx)]

Still happens on Jammy. Should be fixed before final release.