[kde] [Bug 475542] New: plasma 6 wayland nvidia: Keyboard input is very laggy in Electron apps

[Jean-Francois Roy]

https://bugs.kde.org/show_bug.cgi?id=475542

            Bug ID: 475542
           Summary: plasma 6 wayland nvidia: Keyboard input is very laggy
                    in Electron apps
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: jf at devklog.net
  Target Milestone: ---

SUMMARY

In Electron apps, all of them running in XWayland in a wayland plasma 6
session, with an nvidia GPU, keyboard input is very laggy. I don't know if it's
input processing or painting or refresh.

STEPS TO REPRODUCE

- On Arch Linux, install Discord or Slack with system electron (which is
electron 25 at the time of writing), and type. Input will be very laggy.

OBSERVED RESULT

Laggy keyboard input.

EXPECTED RESULT

Normal keyboard input performance. Native wayland applications like Konsole are
not affected.

SOFTWARE/OS VERSIONS

Operating System: Arch Linux 
KDE Plasma Version: 5.27.80
KDE Frameworks Version: 5.240.0
Qt Version: 6.6.0
Kernel Version: 6.5.7-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 7950X3D 16-Core Processor
Memory: 62.5 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 4090/PCIe/SSE2
Nvidia: 535.113.01

ADDITIONAL INFORMATION

No abnormal journal log or CPU activity. System is otherwise idle.

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