https://bugs.kde.org/show_bug.cgi?id=364002
Bug ID: 364002
Summary: Alt+Tab does not work when using keymap de(neo)
Product: kwin
Version: unspecified
Platform: Mageia RPMs
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: h.goe...@crazy-compilers.com
When using key keymap "de(neo)" - layout German with variant "neo" - walking
through windows using Alt-Tab does NOT work. Not even the pop-up showing the
window or application symbols does appear.
When using the keymap "de" or "de(nodeadkeys)" - layout German with variant "no
dead keys" - walking through windows using Alt-Tab works as expected.
Version: kdebase4-workspace-4.11.16-5.mga5
How to reproduce:
- Press Alt+tab to verify walking through windows works in your set-up.
- Change the keymap to "de" (standard german keymapping):
$ setxkbmap -layout de
$ setxkbmap -query
rules: evdev
model: pc105
layout: de
options: compose:rwin
- Press Alt+tab to verify walking through windows still works
- Change the keymap to "de(nodeadkeys)" (Germany keymapping commenly used by
programmers):
$ setxkbmap -layout de -variant nodeadkeys
$ setxkbmap -query
rules: evdev
model: pc105
layout: de
variant: nodeadkeys
options: compose:rwin
- Press Alt+tab to verify walking through windows still works
$ setxkbmap -layout de -variant neo
$ setxkbmap -query
rules: evdev
model: pc105
layout: de
variant: neo
options: compose:rwin
- Press Alt+tab -- nothing happens
Notes
1. It does not matter whether you change the keymap via setxkbmap, via KDE
system settings or via some X11 config file. All of these ways result in the
same xkb settings as you can verify using setxkbmap -query.
2. When "de(neo)" is active, xev shows key-events for "Alt" and "Tab", while
for the other keymappings only "Alt" is shown an the Tab seams to be
intercepted by the window manager.
KeyPress event, serial 40, synthetic NO, window 0x4400001,
root 0xd4, subw 0x0, time 41792235, (1456,682), root:(1456,705),
state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyPress event, serial 40, synthetic NO, window 0x4400001,
root 0xd4, subw 0x0, time 41793075, (1456,682), root:(1456,705),
state 0x18, keycode 23 (keysym 0xff09, Tab), same_screen YES,
XLookupString gives 1 bytes: (09) " "
XmbLookupString gives 1 bytes: (09) " "
XFilterEvent returns: False
3. Then temporary deactivating the shortcut for walking through windows, xev
show exact the same output even for plain "de" layout.
4. "de(neo)" is the only X11 layout redefining the *upper* layers of the
Tab-key:
key <TAB> { [ Tab, ISO_Left_Tab, Multi_key, ISO_Level5_Lock,
NoSymbol, NoSymbol, NoSymbol, ISO_Level5_Lock ] };
while all other layouts use
key <TAB> { [ Tab, ISO_Left_Tab ] };
The key definitions can be found in /usr/share/X11/xkb/symbols/de: grep
'<TAB>' /usr/share/X11/xkb/symbols/*
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