Bug 494848

Summary:	shift+alt does not trigger alt+shift modifier only shortcut
Product:	[Frameworks and Libraries] frameworks-kglobalaccel	Reporter:	Vladislav Grechannik <vgrechannik>
Component:	general	Assignee:	kdelibs bugs <kdelibs-bugs-null>
Status:	CONFIRMED ---
Severity:	minor	CC:	ben2talk, butirsky, dev, duha.bugs, fanzhuyifan, krokwen, natalie_clarius, nate, vgrechannik
Priority:	NOR	Keywords:	regression
Version First Reported In:	6.10.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=494579 https://invent.kde.org/plasma/kglobalacceld/-/issues/1
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Vladislav Grechannik 2024-10-16 07:12:23 UTC

SUMMARY
I have set my language switching to Alt+Shift in the new layout switch keybind option in the menu in 6.2.0 and been triggering it by pressing Shift, then Alt. After updating to 6.2.1, this method stopped working and now only pressing Alt then Shift works.

STEPS TO REPRODUCE
1. Set layout change keybind to Alt+Shift by pressing Alt then Shift. (If you press Shift then Alt it registers as Meta+Shift)
2. Try changing the layout by pressing first shift, then alt

OBSERVED RESULT
Nothing happens

EXPECTED RESULT
Layout change

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0

ADDITIONAL INFORMATION
Maybe this is connected with Bug 494579

Comment 1 Vladislav Grechannik 2024-10-17 00:32:08 UTC

Shift+Alt works if I set it in the old/deprecated X11 keymaps

Comment 2 Nate Graham 2024-12-12 19:29:45 UTC

Possibly caused by the fix for Bug 494579, which went into 6.2.1.

Comment 3 Ben Guy-Williams 2024-12-29 17:11:37 UTC

I have encountered this issue today.

When opening the Keyboard dialog, there are TWO paths to set this option.

Usually, I look to Key Bindings in the top right, which gives a long list of options:

- Switching to another layout
1. Alt+Caps Lock (My choice)
2. Alt+Ctrl
3. Alt+Shift.

If you select Alt+Shift here, it will not work (other options do work).

However, if you INSTEAD of going to key bindings, open Keyboard - then look down to the bottom left corner, above HELP...

`Change Layout` - click the button, and press Alt+Shift - then the key binding is set and works.

So this bug is actually that the Key Bindings dialog option does not work.

Comment 4 fanzhuyifan 2025-02-05 15:40:33 UTC

As a workaround remove meta from shifted alt in the keymap.

Comment 5 fanzhuyifan 2025-02-05 15:40:45 UTC

*** Bug 499542 has been marked as a duplicate of this bug. ***

Comment 6 fanzhuyifan 2025-02-05 15:47:17 UTC

(In reply to fanzhuyifan from comment #4)
> As a workaround remove meta from shifted alt in the keymap.

Note that this has been removed from the default setting upstream in https://gitlab.freedesktop.org/xkeyboard-config/xkeyboard-config/-/merge_requests/762. There hasn't been a release containing that commit though.

Keeping this bug report open since we might want a proper fix (see thread in https://invent.kde.org/plasma/kglobalacceld/-/issues/1#note_1052309)

Comment 7 Yanis Mukhametshin 2025-02-05 16:10:45 UTC

(In reply to Vladislav Grechannik from comment #1)
> Shift+Alt works if I set it in the old/deprecated X11 keymaps

Thank you! Didn't think this would work on wayland, but it does.

Comment 8 Wismill 2025-02-05 16:14:00 UTC

(In reply to fanzhuyifan from comment #6)
> Note that this has been removed from the default setting upstream in
> https://gitlab.freedesktop.org/xkeyboard-config/xkeyboard-config/-/
> merge_requests/762. There hasn't been a release containing that commit
> though.

This will be the default in the upcoming xkeyboard-config 2.44, which will be released very soon.

Comment 9 Wismill 2025-02-05 16:17:20 UTC

(In reply to Vladislav Grechannik from comment #1)
> Shift+Alt works if I set it in the old/deprecated X11 keymaps

By the way what do you mean by deprecated? XKB keymaps (as in xkeyboard-config and /usr/share/X11/xkb) are not deprecated at all and are the standard keymaps in Wayland too.