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Summary: At this point I have a stable desktop where I don't have to
reduce my touch-typing speed by a factor of 20 in order to achieve any
text input at all (which is how it was this morning before disabling
IBUS in my Language Support preferences).

I think ibus-gtk was already installed by default, and selected (at
least that's what shows in the Language Support GUI). However, I don't
know how ibus-gtk relates to xim, and the problems between xim and e.g.
Inkscape remain unspoken.

The assertion that no IM module was installed seems to be an assumption
from @happyaron but it's hard to tell if that's what he meant, or why,
from his very short comment.

However, querying the environment variables by running 'export' in bash you see...
declare -x GTK_IM_MODULE="xim"

...both before (when ibus was selected) and after selecting 'none' in
the Language Support GUI and logging out and in again.

I have no idea where this is coming from, but I suspect it's to do with
im-config, given it explicitly exports that environment variable I
couldn't find another reference to it in my profile or session files,
but I'm not really sure what I'm looking for.

I installed SCIM manually, (scim-gtk-immodule) following advice online
that running applications with SCIM was a good way to workaround the
bug/feature interaction/whatever (no-one seems to want to talk about the
actual bug), as described at
http://www.inkscapeforum.com/viewtopic.php?f=29&t=18042 which I needed
to resolve because of
https://bugs.launchpad.net/ubuntu/+source/inkscape/+bug/1385009

IBUS seems to also be related to this serious bug I was also
experiencing...
https://code.google.com/p/chromium/issues/detail?id=456766  so disabling
it seemed like a good idea.

Given my keyboard input is all in ASCII (as you'd expect from a en-GB or
en-US configured laptop) I fail to see why there's internationalisation
support baked into my desktop anyway, especially if it's buggy and
prevents so many applications on the desktop from operating. However, so
far I would say I have a slim grasp of what the actual bug might be,
despite all the reports I've read. So far, only workarounds and buck-
passing.

Searching the repositories for anything to do with a binary or lib
ending xim gives me the following, and neither im-switch or uim-xim are
installed...

$ apt-file search --regexp 'xim$'
cyrus-common: /usr/share/doc/cyrus-common/README.exim
cyrus-doc: /usr/share/doc/cyrus-doc/README.exim
debian-lan-config: /usr/share/debian-lan-config/fai/config/scripts/MAIL_SERVER/10-exim
devscripts: /usr/share/doc/devscripts/examples/forward.exim
exim4-daemon-heavy: /usr/sbin/exim
exim4-daemon-light: /usr/sbin/exim
im-switch: /etc/X11/xinit/xinput.d/default-xim
im-switch: /etc/X11/xinit/xinput.d/th-xim
logcheck-database: /etc/logcheck/ignore.d.server/sa-exim
logwatch: /usr/share/logwatch/scripts/services/exim
mlterm-common: /etc/mlterm/xim
postgrey: /usr/share/doc/postgrey/README.exim
sa-exim: /usr/share/lintian/overrides/sa-exim
sks: /etc/sks/forward.exim
sks: /usr/share/doc/sks/sampleConfig/debian/forward.exim
uim-xim: /usr/bin/uim-xim


** Bug watch added: code.google.com/p/chromium/issues #456766
   http://code.google.com/p/chromium/issues/detail?id=456766

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to im-config in Ubuntu.
https://bugs.launchpad.net/bugs/1425510

Title:
  Default IM configuration causes hangs

Status in im-config package in Ubuntu:
  Invalid

Bug description:
  Certain applications have associated input hangs, where no key input
  events can be sent which sometimes clear after some time, and in at
  least one case (Inkscape), this is eliminated by running from
  Start->Run as follows, hence overriding the declaration of
  GTK_IM_MODULE in /etc/X11/Xsession.d/70im-config_launch , distributed
  in im-config...

  bash -c "unset GTK_IM_MODULE && inkscape"

  A permanent fix on my machine could be to modify the 70im-
  config_launch file, or declare an overriding export in some later .rc
  file. Anyone know where I should make this declaration if not
  modifying package-maintained files?

  An alternative solution could be to install scim-gtk-immodule and
  run...

  bash -c "export GTK_IM_MODULE=scim && inkscape"

  See also
  https://bugs.launchpad.net/ubuntu/+source/inkscape/+bug/1385009

  Similar behaviours are experienced with Kupfer - minutes of hang with
  apparently no input events being passed, followed by (sometimes)
  unfreezing.

  I'm running Lubuntu Utopic with LXDE and Compiz (minimal dependencies
  on GTK), so it's feasible that some component is not properly declared
  in a dependent package.  I can't find whether there is in fact a xim
  module available and running anywhere on my system. How can I check?

  Other input issues relating to out-of-order key event delivery to
  Chrome-based applications are experienced on the same build, but I
  think this may be an independent bug, ostensibly resolved by declaring
  IBUS_SYNC_MODE=1
  https://code.google.com/p/chromium/issues/detail?id=456766 but thought
  I should mention as it's kind of in the same subsystem and may be
  linked.

  I speculate that there is some missing dependency or bad configuration
  in the default presentation of IM capabilities, which eventually
  causes a DBUS timeout or similar, eventually causing a fallback
  without any international input, but which is functional.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: im-config 0.26-2ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3
  Uname: Linux 3.16.0-30-generic i686
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: i386
  Date: Wed Feb 25 12:26:26 2015
  InstallationDate: Installed on 2015-01-01 (54 days ago)
  InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: im-config
  UpgradeStatus: No upgrade log present (probably fresh install)

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