Bug#1117893: High CPU usage in kwin_x11 when locking the screen while an external display is connected

[Patrick Franz <deltaone@debian.org>]

Hi,

On Sun, 12 Oct 2025 11:39:01 +0300 "A. Ismail" <a.h.ismail.dev@gmail.com> wrote:
> Source: qt6-base
> Version: 6.8.2+dfsg-9
> Severity: normal
> Tags: patch
> 
> Dear Maintainers,
> 
> When I lock the screen while an external display is connected, CPU usage
> increases a lot by kwin_x11. After investigating, I found a KDE bug 
> report about
> this issue. The bug was fixed in newer versions of QT. I applied the 
> specific patch
> to Debian's qt6-base package and I can confirm that the fix works as 
> intended.
> Can you please include the patch in trixie's QT 6 build?

This will be fixed with https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1113799.


-- 
Med vänliga hälsningar

Patrick Franz