On my ASUS ExpertBook B3404CVA running Kubuntu 24.04 (KDE Plasma 5.27.11, X11, Kernel 6.8.0-52-generic), I set the usual keyboard layout switcher via:

/etc/default/keyboard: XKBLAYOUT = "us,ru" XKBOPTIONS = "grp:menu_toggle"

Enter fullscreen mode

Exit fullscreen mode

Normally I set up layout switching through the standard graphical interface in Kubuntu — never had to think twice. But on this machine, it simply didn’t work. I had to fall back on this method. And even then, it works only intermittently :

sometimes with the Fn key,

sometimes without,

and there's no clear logic when or why.

🚨 Symptoms

Layout switching works...…