Bug#945562: libqt5core5a: Update to 5.12 breaks KDE login
Hi David!
On Tue, 26 Nov 2019 at 21:03, David Engel <david@istwok.net> wrote:
>
> Package: libqt5core5a
> Version: 5.12.5+dfsg-2
> Severity: important
>
> Dear Maintainer,
>
> I had not rebooted my Deiban/testing system since mid-October. When I
> did, my KDE session was unustable. After entering my password into
> sddm, the screen began flashing wildly with my restored session
> windows visible between the flashes. The end result was a mish-mash
> of the KDE login animation and my restored windows and a system that
> was unresponsive to keyboard input and mouse clicks.
>
> After much trial and error and several system restores from backups, I
> narrowed the problem down to upgrading from qt version 5.11.3+dsfg1-3
> to version 5.12.5+dsfg-2. I suppose there is a slight chance that the
> latest versions of libkf5xmlgui and plasma-integration are also to
> blame since the qt upgrade forced them to be upgraded too.
>
> I'm currently forced to use XFCE since KDE is unusable.
> Interestingly, KDE programs like konsole and dolphin show no ill
> effects when run under XFCE. The mythtv installation I build myself
> and uses Qt and OpenGL also works fine.
>
> The problem does not appear to have anything to do with my personal
> KDE configuration. I created a dummy user with no existing
> configuration and the problem still occurred.
>
> Finally, the problem does not occur on another system that I maintain
> which uses the nvidia-legacy-390xx graphics driver. Perhaps the
> problem is related to something in the intel graphics driver on this
> old, Ivy Bridge system.
>
> Please let me know if there is any other information you want me to
> provide like logs or things you want me to try.
This really sounds like a video issue. So far we did not receive any
other complain in this regard.
Try checking /var/log/Xorg.log.0 (after trying to start KDE) for
possible issues.
Reply to: