SUMMARY STEPS TO REPRODUCE 1. Start a VM in VirtualBox while using 'kwin_wayland' on the host rather than 'kwin_x11'. 2. Click inside the VM to make sure it's the active window. 3. Press the combination Meta+E on the keyboard. OBSERVED RESULT Observe that keyboard combinations such as Meta+E are processed by the host rather than by the guest. EXPECTED RESULT The VM (the guest) should process the keyboard combination, and it should have no effect on the host. SOFTWARE/OS VERSIONS Linux: kernel 5.12.14 KDE Plasma Version: 5.22.2 KDE Frameworks Version: 5.83.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION In VirtualBox, keyboard combinations trigger shortcuts on the host machine rather than in the VM's guest OS. This doesn't occur when the host is using 'kwin_x11'. It only happens with 'kwin_wayland'. (Think of keyboard combinations like Meta+E to open the file manager.) From what I know, this is in some sense normal on Wayland since Wayland is more secure. But, as you're probably aware, in recent years Wayland has provided extensions so that well-behaved programs can grab the keyboard if they wish. Of course, it may be a VirtualBox bug, so I looked into a that: Currently, VirtualBox tries to be well-behaved, because it is sending the '_XWAYLAND_MAY_GRAB_KEYBOARD' message ( see https://www.virtualbox.org/ticket/19650 ). This helps it grab the keyboard on mutter (GNOME's Wayland compositor). However, that virtualbox fix seems specific to mutter, and doesn't appear to help for kwin (or 'kwin_wayland'). Questions: - Is there anything else VirtualBox needs to do to properly grab the keyboard? Is there some 'standard' method? One that works on both 'kwin_wayland' and 'mutter'? Or is the '_XWAYLAND_MAY_GRAB_KEYBOARD' message the standard way? That message seems to be mutter-specific, but I could be wrong. - Or, should kwin listen for the above message and handle it properly? If so, consider this to be a feature request. Related: vbox: https://www.virtualbox.org/ticket/19650 kwin: https://phabricator.kde.org/T12988 kwin: https://bugs.kde.org/show_bug.cgi?id=405877 mutter: https://bugzilla.redhat.com/show_bug.cgi?id=1285770
Hello, This is still an issue for me as well. # SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.94.0 Qt Version: 5.15.4 Kernel Version: 5.17.9-zen1-1-zen (64-bit) Graphics Platform: Wayland VirtualBox: 6.1.34 VirtualBox appears to have done what was necessary on their end 2 years ago: https://www.virtualbox.org/ticket/19650 Does KWIN_WAYLAND implement the mentioned "_XWAYLAND_MAY_GRAB_KEYBOARD" parameter and behaves accordingly? Thanks.
This bug was reported against an outdated version of KWin. We have made many changes since the. If the issue persists in newer versions can you reopen the bug report updating the version number.