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[Bug 1481025] Re: Keyboard shortcut for layout switching works in Unity but not in Gnome-Flashback

 

The problem seems to be some incompatibility between ibus and gnome-flashback.
ibus doesn't cause problems in Unity but it does cause this problem in flashback.

A workaround for gnome-flashback would be to conflict with ibus until
this is solved.

A workaround for users: in/etc/default/im-config, change
IM_CONFIG_DEFAULT_MODE=auto
to
IM_CONFIG_DEFAULT_MODE=none

This tells im-config not to load ibus.
If one reboots after that, keyboard switching again works (as good as it does in Unity, which still has issues, but they're not specific to flashback).

A debugging note. When I'm switching the keyboard layout, if I run:
$ dconf watch /
when ibus is not running, I see this:
/org/gnome/desktop/input-sources/current
  uint32 1
and the indicator gets updated properly, 

...but when ibus is running, I see this:
/desktop/ibus/general/engines-orger
 ['xkb:gr::gre', 'xkb:us::eng']
...and the indicator is not updated with the newly switched layout.

-- 
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https://bugs.launchpad.net/bugs/1481025

Title:
  Keyboard shortcut for layout switching works in Unity but not in
  Gnome-Flashback

Status in gnome-flashback package in Ubuntu:
  Confirmed
Status in unity-settings-daemon package in Ubuntu:
  Confirmed

Bug description:
  My keyboard layout is "us,gr", and the new Gnome way to switch between them is by pressing "Super+Space".
  This works fine in:
   * Gnome-Flashback (Metacity) 14.04
   * Unity 14.04
   * Unity 15.10

  It doesn't work in:
   * Gnome-Flashback (Metacity) 15.10

  I've tested with the 15.10 default (Unity) installation, selecting
  Greek language in ubiquity, and adding gnome-flashback after the
  installation.

  Just for reference, here are my related gsettings:
  $ gsettings list-recursively org.gnome.desktop.input-sources
  org.gnome.desktop.input-sources show-all-sources false
  org.gnome.desktop.input-sources per-window false
  org.gnome.desktop.input-sources current uint32 1
  org.gnome.desktop.input-sources sources [('xkb', 'us'), ('xkb', 'gr')]
  org.gnome.desktop.input-sources xkb-options ['grp:alt_shift_toggle', 'grp_led:scroll']

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References