| Summary: | Trigger keyboard layout switch shortcuts on release, not press | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Yevhen Popok <xalt7x.service> |
| Component: | input | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | ||
| Priority: | NOR | ||
| Version: | 5.27.8 | ||
| Target Milestone: | --- | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
Accidentally found older bug report https://bugs.kde.org/show_bug.cgi?id=420493 So, I'm marking this one as a duplicate. *** This bug has been marked as a duplicate of bug 420493 *** |
SUMMARY Nowadays many application shortcuts involve Ctrl+Shift and Alt+Shift combinations. On Linux desktops some shortcuts for keyboard layout switching conflict with them. For example, if a user binds "Ctrl+Shift" for keyboard layout switching, combinations like Ctrl+Shift+C (paste into terminal emulator) or Ctrl+Shift+Z (Redo action) wouldn't work as "Shift" will be used for keyboard layout switching. It's an infamous X11 XCB issue that gets inherited on Wayland. All previous bug reports suggested changing XCB behavior to trigger a keyboard layout switching on hotkeys release rather than on press. An unofficial patch for X11 still exists but it doesn't work for Wayland. STEPS TO REPRODUCE 1. Open "System Settings" > "Keyboard" > "Layouts" > "Shortcuts for Switching Layout" > "Main Shortcuts" 2. Select Ctrl+Shift option for "Switching to another layout" 3. Copy some terminal command (.e.g., echo 1) to your clipboard 4. Open a terminal emulator (e.g. Konsole) 5. Press Ctrl+Shift+V OBSERVED RESULT The command gets pasted to the Konsole EXPECTED RESULT The command doesn't get pasted to the Konsole SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 39 Kinoite KDE Plasma Version: 5.27.8 KDE Frameworks Version: 5.110.0 Qt Version: 5.15.10 ADDITIONAL INFORMATION This issue is important mostly because this old XCB provides bad UX: 1. For users who are comfortable with those classic ("Windows") combinations 2. For users that are not aware of this issue. Some programs expose these XCB options (e.g. KDE System Settings, GNOME Tweaks), and some installers (e.g. Fedora Anakonda or Debian installer) might even select Alt+Shift by default for non-English locales. No one warns about potential issues. As a result, users receive broken shortcuts (e.g. Alt+Shift+Tab) until they somehow find a way to fix it. There was the same bug for KWin X11 and as the XCB bug won't be fixed, KDE maintainers suggested opening another bug. Related topics: https://bugs.kde.org/show_bug.cgi?id=453506 https://bugs.freedesktop.org/show_bug.cgi?id=865 https://gitlab.freedesktop.org/xorg/xserver/-/issues/258 https://aur.archlinux.org/packages/xorg-server-bug865 https://gitlab.freedesktop.org/wayland/weston/-/issues/207