[Bug 875435] Re: iBus indicator does not show on the panel

[Ma Xiaojun]

Hello Aron:

Please help testing and stop repeating cliche, TYIA.

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https://bugs.launchpad.net/bugs/875435

Title:
  iBus indicator does not show on the panel

Status in OEM Priority Project:
  In Progress
Status in OEM Priority Project precise series:
  In Progress
Status in Release Notes for Ubuntu:
  Invalid
Status in “ibus” package in Ubuntu:
  Confirmed
Status in “im-switch” package in Ubuntu:
  In Progress
Status in “language-selector” package in Ubuntu:
  New
Status in “unity” package in Ubuntu:
  New
Status in “ibus” source package in Oneiric:
  Triaged
Status in “im-switch” source package in Oneiric:
  Confirmed
Status in “language-selector” source package in Oneiric:
  New
Status in “unity” source package in Oneiric:
  New
Status in “ibus” source package in Precise:
  Confirmed
Status in “im-switch” source package in Precise:
  In Progress
Status in “language-selector” source package in Precise:
  New
Status in “unity” source package in Precise:
  New
Status in “ibus” source package in Quantal:
  Confirmed
Status in “im-switch” source package in Quantal:
  In Progress
Status in “language-selector” source package in Quantal:
  New
Status in “unity” source package in Quantal:
  New

Bug description:
  IBus icon does not show at Unity panel in some environments, we are
  discovering the real culprit now.

  [Impact]
  Impacts all users of CJK languages or any other user depending on IBUS for character composition. This is a rather large user base and the prority of this bug has been updated as to reflect the impact on users.
  The missing indicator on session start disables users from having a visual cue of the current state of the ibus support for their session, as well as the current ibus input method in use, which may change during the course of a session. Furthermore, since the underlying issue appears to be related to ibus-daemon startup, this may render ibus input unusable until the daemon is restarted.

  [Release note for P]
  see https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/875435/comments/23

  [Development Fix]
  (TBD)

  [Stable Fix]
  (TBD)

  [Workaround]
  We have some workarounds, but they are not root fix. The root cause is not identified.

  A) gsettings approach:
  see comment 8, comment 23

  B) exec: ibus-daemon -rxd
  RESTARTing ibus-daemon can fix the one-time solution. If user met this problem, executing `ibus-daemon -rxd`. This command restart ibus-daemon, and fix for current login sessions. But that is not root fix, if user restart the session (or reboot system), problem are back-in.

  Notes: If user exec the Ibus icon on Dash, that is not functional.
  Because ibus-daemon are already running by /etc/X11/Xsession.d/80im-
  switch.

  B') .desktop approach (with user initiated ibus restart)
  Workaround is as discussed in this bug report, to apply the debdiff provided by Ikuya Awashiro. This change modifies the parameters passed to ibus-daemon's .desktop file, that used in a Unity Dash. That provide more better B) approach. 
  the session manager on a new session; and makes ibus-daemon replace any previously running ibus daemon for the user.

  [Test Case]
  1) Start a Unity session with a CJK language (Chinese, Japanese, Korean, Vietnamese) or any other language depending on ibus to compose characters.
  2) Verify that the ibus indicator is shown in the Unity panel, and that ibus input can be used.

  The indicator should be visible in all cases. Since this bug is akin
  to a race condition, it may need a few startups to trigger the bug.

  [Regression Potential]
  Minimal, this only affects the ibus daemon on session startup in the way that it gets spawned by the session manager: it will replace any other running ibus daemon at the time, though none should be running before ibus-daemon gets spawned regardless. A different (or the same) ibus daemon can still be started manually.
  Possible issues could include the ibus daemon failing to start altogether with the session, in which case the ibus input methods would be unavailable, and can be started manually by users (using a terminal).

  [Background]
  (guess by Ikuya AWASHIRO, Fumihito YOSHIDA)
  In Ubuntu/Unity environments, ibus-daemon are initiated by /etc/X11/Xsession.d/80im-switch scripts. That invoked at early state on system start-up, so too early invoking bring up the race between Unity-panel and indicator-ibus. If indicator-ibus are start-up at too fast phase, the Unity-panel are not started, that cause "no icon" running.

  ------

  iBus still run but doesn't show off in the panel, in every way. The
  only thing to make it right is do ibus-deamon -rxd

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: ibus 1.3.99.20110419-1ubuntu3
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  Date: Sun Oct 16 09:19:00 2011
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  SourcePackage: ibus
  UpgradeStatus: Upgraded to oneiric on 2011-10-13 (2 days ago)

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