Running the client in fullscreen with system keys enabled results in the client locking up, and using 100% CPU, if the client uses Xorg 1.20 or newer. Reported upstream here: https://github.com/TigerVNC/tigervnc/issues/660 Complained to Xorg folks here: https://bugs.freedesktop.org/show_bug.cgi?id=106895 Upstream workaround here: https://github.com/TigerVNC/tigervnc/commit/1d94124f6854e73eef58c595b2b1a4d2a7333962
Works well now. Tested on Fedora Rawhide with GNOME desktop (Xorg 1.20.1). I could provoke the bug with 4.9.0 both with Xorg and Xwayland. After an upgrade to trunk the client worked well in both environments.