Hi, I am running F42. I have been trying the betas from @kdesig/kde-beta. All worked perfectly as far as a beta is supposed to be (actually the only issue was that the mallik (spelling?) keyboard was crashing frequently.
After the update to qt 6.9.1 and on the next reboot sddm crashes on start:
Stack trace of thread 1594: #0 0x00007fde0ac8111c __pthread_kill_implementation (libc.so.6 + 0x7311c) #1 0x00007fde0ac27afe raise (libc.so.6 + 0x19afe) #2 0x00007fde0ac0f6d0 abort (libc.so.6 + 0x16d0) #3 0x00007fde0ac106f3 __libc_message_impl.cold (libc.so.6 + 0x26f3) #4 0x00007fde0ac8b275 malloc_printerr (libc.so.6 + 0x7d275) #5 0x00007fde0ac9060c free (libc.so.6 + 0x8260c) #6 0x00007fde0bae3370 _ZL13init_platformRK7QStringS1_S1_RiPPc (libQt6Gui.so.6 + 0xe3370) #7 0x00007fde0bae628b _ZN22QGuiApplicationPrivate25createPlatformIntegrationEv (libQt6Gui.so.6 + 0xe628b) #8 0x00007fde0bae6e88 _ZN22QGuiApplicationPrivate21createEventDispatcherEv (libQt6Gui.so.6 + 0xe6e88) #9 0x00007fde0b3027ad _ZN23QCoreApplicationPrivate4initEv (libQt6Core.so.6 + 0x1027ad) #10 0x00007fde0baeb48d _ZN22QGuiApplicationPrivate4initEv (libQt6Gui.so.6 + 0xeb48d) #11 0x00007fde0c643aa5 _ZN19QApplicationPrivate4initEv (libQt6Widgets.so.6 + 0x43aa5) #12 0x00007fde0e16c9e7 _ZN4KWin11ApplicationC1ERiPPc (libkwin.so.6 + 0x16c9e7) #13 0x0000559ffbf61851 main (/usr/bin/kwin_wayland + 0xd851) #14 0x00007fde0ac115f5 __libc_start_call_main (libc.so.6 + 0x35f5) #15 0x00007fde0ac116a8 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x36a8) #16 0x0000559ffbf69c55 _start (/usr/bin/kwin_wayland + 0x15c55) ELF object binary architecture: AMD x86-64
While searching for this I noticed a similar report on Arch where supposedly the cure was to rebuild the plasma packages with the new qt6 version: https://bbs.archlinux.org/viewtopic.php?id=306023
FWIW the symptom is that sddm crashes. The workaround for me was to open a tty terminal, launch the gdm service and log in to gnome (plasma naturally fails).
Is this information helpful?
Best regards,
According to the debug stack, the problem doesn't come from sddm but from kwin-wayland. The archinux thread also mentions that the problem comes from kwin and that it should be recompiled with qt6.9.1. I'm using rawhide and I have no problems with plasma and qt6.9.1, but if I remember correctly, rawhide updated kwin and other dependencies at the same time as qt.
I just checked rawhide and recompiled kwin with qt-6.9.1
Information for build kwin-6.3.91-3.fc43 Changelog * Sun Jun 08 2025 Jan Grulich jgrulich@redhat.com - 6.3.91-3 - Rebuild (qt6)
qt6-qtbase.x86_64 6.9.1-1.fc43 rawhide kwin.x86_64 6.3.91-3.fc43 rawhide
Updating the packages I am now, again, using plasma.
Strangely it took almost a minute for the display to show, a time where caps lock would not show (as if the keyboard was unresponsive).
Other than that everything works.
Thank you. :-)
On Thursday, 12 June 2025 19:09:57 Central European Summer Time José Abílio Oliveira Matos via kde wrote:
Hi, I am running F42. I have been trying the betas from @kdesig/kde-beta. All worked perfectly as far as a beta is supposed to be (actually the only issue was that the mallik (spelling?) keyboard was crashing frequently.
After the update to qt 6.9.1 and on the next reboot sddm crashes on start:
Apologies. The beta packages needed a rebuild after Qt was upgraded to 6.9.1.
I rebuilt everything last Thursday.
Best regards,
On Sunday, 15 June 2025 19:19:28 Western European Summer Time Marc Deop i Argemí wrote:
Apologies. The beta packages needed a rebuild after Qt was upgraded to 6.9.1.
I rebuilt everything last Thursday.
Best regards,
It was a chance to test kde applications running in gnome. :-)
The only issue was when using kmail/kontact/akonadi, the resource for one account, but not for another, crashed in gnome but it works perfectly in plasma.
Thank you for your work,
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Eddy02 Edpil -
José Abílio Matos -
José Abílio Oliveira Matos
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Marc Deop i Argemí