Perhaps easier variant of the above workaround pertaining Alt+Shift is
to comment out the following (eight) lines in
/usr/share/X11/xkb/symbols/group
first change (search for "lalt_lshift"):
partial modifier_keys
xkb_symbols "lalt_lshift_toggle" {
virtual_modifiers Alt;
key <LALT> {
symbols[Group1] = [ NoSymbol, ISO_Next_Group ],
virtualMods= Alt
};
// key <LFSH> {
// type[Group1]="PC_ALT_LEVEL2",
// symbols[Group1] = [ Shift_L, ISO_Next_Group ]
// };
};
second change (~15 lines below):
partial modifier_keys
xkb_symbols "ralt_rshift_toggle" {
virtual_modifiers Alt;
key <RALT> {
symbols[Group1] = [ NoSymbol, ISO_Next_Group ],
virtualMods= Alt
};
// key <RTSH> {
// type[Group1]="PC_ALT_LEVEL2",
// symbols[Group1] = [ Shift_R, ISO_Next_Group ]
// };
};
then load the keymap, in my case
$ setxkbmap us,cz -option grp:alt_shift_toggle
or set it through gui (Change layout option=Alt+Shift in XFCE), or just
restart X server if you've already done so
Now <shift>+<left alt> (*in that order*, i.e. first press and hold any shift,
then press left alt) switches keyboard layout
<alt>+<shift> (first alt, then shift) works as a modifier (i.e.
shortcuts work), and does nothing in itself
<alt>+<shift>+<tab> works as it should
It would be nice to actually have a separate "rule" for this - titled
"Shift+LAlt", available with -grp:shift_lalt_toggle, but unfortunatelly I don't
know how to modify the rules files..
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https://bugs.launchpad.net/bugs/36812
Title:
Keyboard layout change on hotkeys press instead of release and do not
work well with shortcuts
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