[Wayland-bugs] [Bug 106930] xwl_present_flips_stop: Assertion `xwl_window->present_window == window' failed.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106930

            Bug ID: 106930
           Summary: xwl_present_flips_stop: Assertion
                    `xwl_window->present_window == window' failed.
           Product: Wayland
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: XWayland
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: james at nurealm.net
        QA Contact: xorg-team at lists.x.org

Arch Linux
xorg-server-xwayland 1.20.0-7
kwin 5.13.0-1

Xwayland does not play nicely with kwin_wayland.  In particular, repeated
selection of buttons, for instance the Application Launcher from the Panel,
will eventually result in an Xwayland crash that locks-up the kwin_wayland
keyboard and mouse.

Locking-up kwin_wayland is KDE's problem.  Crashing the Xwayland X server is a
xorg/Wayland problem.

The kwin_wayland log reports:

Xwayland: ../xorg-server-1.20.0/hw/xwayland/xwayland-present.c:520:
xwl_present_flips_stop: Assertion `xwl_window->present_window == window'
failed.

I have seen this on both a dual display laptop with i915/i965 hardware and a
triple display desktop machine with Radeon HD 5570 / Redwood PRO hardware.

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