Kwin-wayland is very crashy on Fedora 42

Ask Fedora
1

I updated from kwin-wayland 6.3.2.1-1 to 6.3.2.1-2 on Fedora 42 today

dnf history info 647 | grep kwin

  Upgrade  kwin-0:6.3.2.1-2.fc42.x86_64                      Group           updates-testing
  Upgrade  kwin-common-0:6.3.2.1-2.fc42.x86_64               Dependency      updates-testing
  Upgrade  kwin-libs-0:6.3.2.1-2.fc42.x86_64                 Dependency      updates-testing
  Upgrade  kwin-wayland-0:6.3.2.1-2.fc42.x86_64              Dependency      updates-testing
  Replaced kwin-0:6.3.2.1-1.fc42.x86_64                      Group           @System
  Replaced kwin-common-0:6.3.2.1-1.fc42.x86_64               Dependency      @System
  Replaced kwin-libs-0:6.3.2.1-1.fc42.x86_64                 Dependency      @System
  Replaced kwin-wayland-0:6.3.2.1-1.fc42.x86_64              Dependency      @System

After this update, kwin-wayland has become extremely unstable:

Thu 2025-03-06 10:13:55 EST  3028 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 10:25:12 EST  3156 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 10:26:26 EST  5422 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 10:27:18 EST  6144 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 11:00:42 EST  6730 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 11:12:10 EST 10647 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 11:12:23 EST 12500 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 11:28:28 EST 13172 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 11:28:30 EST 15025 1000 1000 SIGSEGV missing  /usr/bin/kcmshell6           -
Thu 2025-03-06 11:33:49 EST 15101 1000 1000 SIGSEGV missing  /usr/bin/kwin_wayland        -
Thu 2025-03-06 11:33:51 EST 17003 1000 1000 SIGSEGV present  /usr/bin/kcmshell6        7.5M
Thu 2025-03-06 11:34:07 EST 17073 1000 1000 SIGSEGV present  /usr/bin/kwin_wayland     6.9M
Thu 2025-03-06 11:57:14 EST 17940 1000 1000 SIGSEGV present  /usr/bin/kwin_wayland     9.3M
Thu 2025-03-06 11:57:15 EST 20870 1000 1000 SIGABRT present  /usr/libexec/drkonqi    987.6K
Thu 2025-03-06 11:57:15 EST  4127 1000 1000 SIGSEGV present  /usr/bin/konsole          5.1M
Thu 2025-03-06 11:57:15 EST 19815 1000 1000 SIGSEGV present  /usr/bin/kcmshell6        8.8M
Thu 2025-03-06 11:57:15 EST 21051 1000 1000 SIGABRT present  /usr/libexec/drkonqi    986.3K
Thu 2025-03-06 11:57:15 EST 20305 1000 1000 SIGSEGV present  /usr/bin/systemsettings  23.2M
Thu 2025-03-06 11:57:16 EST 21214 1000 1000 SIGABRT present  /usr/libexec/drkonqi    987.2K
Thu 2025-03-06 11:57:36 EST 22378 1000 1000 SIGSEGV present  /usr/bin/kwin_wayland     6.8M
Thu 2025-03-06 14:05:59 EST 23665 1000 1000 SIGSEGV present  /usr/bin/kwin_wayland       9M

This even results in abrt not working, bug reports immediately crash the desktop so I can’t even report the bug. I think I was able to send a few reports with abrt-cli report <id>
Another odd thing is that simply running kinfo will crash the plasmashell and sddm will not work, I had to disable sddm and go to gdm to login.

I suggest if you’re on Fedora 42 and using kwin-wayland 6.3.2.1-1 do not upgrade to 6.3.2.1-2 and wait for the next one.

2

Please report as a bug on the fedora bugtracker.

Note: Fedora 42 is not yet in beta as there are tooo many blocker bugs at the moment.

1 Like
3

this is very much not contained to f42 it also has the same effects on f41 so much in fact that i had to go back to the x11 plasma package just to have a stable desktop again

4

if you already opened a bug report please provide a link

5

Same problem. Kwin crashed every time i tried to open Chrome. Downgrading to the previous version solved it for me:

sudo dnf downgrade https://kojipkgs.fedoraproject.org//packages/kwin/6.3.2.1/1.fc41/x86_64/kwin-6.3.2.1-1.fc41.x86_64.rpm https://kojipkgs.fedoraproject.org//packages/kwin/6.3.2.1/1.fc41/x86_64/kwin-common-6.3.2.1-1.fc41.x86_64.rpm https://kojipkgs.fedoraproject.org//packages/kwin/6.3.2.1/1.fc41/x86_64/kwin-libs-6.3.2.1-1.fc41.x86_64.rpm https://kojipkgs.fedoraproject.org//packages/kwin/6.3.2.1/1.fc41/x86_64/kwin-wayland-6.3.2.1-1.fc41.x86_64.rpm
6

Are you guys on AMD cards? Or is anyone crashing on nvidia?

Fedora bug report: 2350883 – kwin crashes when flatpak is loaded, and sometimes native apps

CC: @mnarath bug report here for fedora 41

7

Also discussed here: Update - kwin 6.3.2.1-2.fc41 - disaster but for fedora 41

8

I’m on nvidia f42 - it’s crashing.