https://bugs.kde.org/show_bug.cgi?id=504645

            Bug ID: 504645
           Summary: KMag amplification not working on Debian 12
    Classification: Applications
           Product: kmag
      Version First 22.12.3
       Reported In:
          Platform: Debian stable
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: sar...@users.sourceforge.net
          Reporter: rogerjgam...@gmail.com
  Target Milestone: ---

Created attachment 181633
  --> https://bugs.kde.org/attachment.cgi?id=181633&action=edit
Print from Kmag without screen amplification

SUMMARY
KMag application is not working on Debian 12.
The application window opens but does not display any magnification.

STEPS TO REPRODUCE
1. Open Kmag (specifically, I use it with KDE Plasma Wayland or Gnome)
2. The error is here, there is no amplification even if you change the focus to
something other than the mouse cursor.

OBSERVED RESULT
There is only the dark background of the Kmag window, there is no
amplification.

EXPECTED RESULT
Screen amplification following the mouse cursor.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian GNU/Linux 12
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.0-35-amd64 (64-bit)
Graphics Platform: offscreen
Processors: 16 × AMD Ryzen 7 5700U with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD Radeon Graphics

ADDITIONAL INFORMATION
When running kmag via terminal, the following output continually occurs:

QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::end: Painter not active, aborted
Got Accessibility DBus address:
"unix:path=/run/user/1000/at-spi/bus_0,guid=63ade28e1b0f317cb972deda682e7235"
Connected to Accessibility DBus at address=
"unix:path=/run/user/1000/at-spi/bus_0,guid=63ade28e1b0f317cb972deda682e7235"
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::end: Painter not active, aborted

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