https://bugs.kde.org/show_bug.cgi?id=481573

            Bug ID: 481573
           Summary: Crash upon clicking disabled system font NVIDIA
                    wayland.
    Classification: Applications
           Product: systemsettings
           Version: 5.93.0
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: kcm_fontinst
          Assignee: plasma-b...@kde.org
          Reporter: hackand...@gmail.com
  Target Milestone: ---

SUMMARY

I have disabled the Segoe UI Emoji font. After I have done that, system
settings closed itself. I re-opened system settings, looked up the same font
again and tried to expand its dropdown menu. It has crashed. It returns the
following error message:

X Error of failed request:  BadLength (poly request too large or internal Xlib
length error)
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request:  460
  Current serial number in output stream:  832

I thought it was an NVIDIA proprietary driver on wayland moment. Sure enough it
was. I tried the same thing on my AMD integrated graphics laptop on wayland, no
crash. Tried them both on X11, no crash.

STEPS TO REPRODUCE
0. Get NVIDIA system, preferably 10 series.
1. Open systemsettings.
2. Go to font management.
3. Disable system font.
4. Might need to close and reopen systemsettings.
5. Look up the same disabled system font again.
6. Click to expand dropdown menu.

OBSERVED RESULT

Crash

EXPECTED RESULT

Allow me to re-enable the font

SOFTWARE/OS VERSIONS
Linux: 6.7.5
KDE Plasma Version: 5.93.0
KDE Frameworks Version: 5.249.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION

GTX 1060 3gb.
nvidia-dkms 545.29.06-4
egl-wayland 2:1.1.13-1

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