I've upgraded a 16.04 LTS to 18.04 LTS where language switching already had the alternative combination of alt+shift.
While changing languages works, it appears that moving a window to a different workplace with key combinations like ctrl+shift+alt+down, fails and acts as the same keypress but without alt, which just changes the workplace.
I've confirmed with xev
that each individual keypress and combination get detected, with the exception that when alt+shift are active at the same time, regardless of holding ctrl or letting the keys go, the keysum
named ISO_Next_Group
appears and any further detection is blocked.
If I remove the alternate language switch combination (using gnome-tweeks
) everything works fine.
I've tried to replace the default language switch of super+space to alt+shift from settings
->keyboard
and it's not detecting any keypress of alt, shift, ctrl unless another key is pressed. This means I can not set alt+shift but maybe alt+shift+k which I don't want.
It looks like there's a similar bug report with about 300 comments from... 2004 till today (2018), but I'm not sure if it applies to the exact problem because it was working till now and I can't believe the exact same problem can be 15y old and noone ever bothered.
Am I missing something?