zombie python

Bug #936332 reported by David López on 2012-02-19
This bug affects 2 people
Affects Status Importance Assigned to Milestone
onboard (Ubuntu)

Bug Description

I use oneiric with 0.97.0+tr756-0ppa~oneiric1. Opening onboard settings by clicking in the 3 lines button and then in the tools button (not with onboard-settings) creates a python process in gnome-system-monitor. Closing that preferences window don't remove the python process in gnome-system-monitor, it goes to zombie state. I've repeated several times, I attach a picture.

Related branches

marmuta (marmuta) wrote :

Thanks for the bug report. I can reproduce this in Precise too. Every time I press the preferences button another process entry is added and zombiefied when closing preferences. All zombie processes then go away once onboard itself exits.

I'll see if I can do anything about this, though I don't believe they can cause problems. The processes are gone and their resources have been freed, only the entries in the process table seem stuck.

Changed in onboard (Ubuntu):
status: New → Confirmed
Changed in onboard:
status: New → Confirmed
marmuta (marmuta) on 2012-02-20
Changed in onboard:
importance: Undecided → Low
marmuta (marmuta) wrote :

No more zombies, fixed in trunk.

Changed in onboard:
status: Confirmed → Fix Committed
David López (david-lopez-upct) wrote :

Hi, marmuta. zombies are still present in precise beta2 (onboard 0.97.0-0ubuntu3)

marmuta (marmuta) wrote :

It's not released yet. Too many other bugs to tend to, though I think we're through now. If you would like to help test the snapshot at

The same thing happens with Guake. It uses a python process and creates another one (the zombie process).

I've included a screenshot of the system monitor to show this.

marmuta (marmuta) wrote :

Martin, yes, I'd imagine there a a lot of apps doing this.. It's pretty easy to create zombie process entries with python's subprocess module. I've opted to double fork with GLib.spawn_async() in onboard 0.97.1 instead. If you'd like to get Guake fixed, you would need to report the bug at their bug tracker.

Francesco Fumanti (frafu) wrote :

You can find Onboard 0.97.1, that contains the fix to this problem in our Stable PPA for oneiric, precise and quantal:

Changed in onboard:
status: Fix Committed → Fix Released
Launchpad Janitor (janitor) wrote :
Download full text (3.3 KiB)

This bug was fixed in the package onboard - 0.97.1-0ubuntu1

onboard (0.97.1-0ubuntu1) quantal; urgency=low

  * Request for sponsorship: New bugfix release available (LP: #999185)
  * debian/control:
    - add moustetweaks (>= 3.3.90) to recommends
    - update standards-version 3.9.3
    - remove wnck dependency from depends
  * debian/patches: remove fix_encoding_mismatch.patch and update series
  * Improve auto-show:
    - unhide for combo boxes (helps in qtoctave) and date editors
    - add focused attribute to debug output
    - fix iconifying by title bar button
    - fix bad repositioning the very first time onboard pops up
    - fix non-critical backtraces for auto-show
    - fix keyboard not being hidden on startup in Metacity
  * Detect running environment to better care for its specificities
    - fix and make also window type hints environment specific
  * Add command line option to override automatic environment detection
  * Fix Onboard not being shown in taskbar (LP: #990486)
  * Prevent zombie process when launching preferences (LP: #936332)
  * Only appear in gnome-screen-saver if onboard was running (LP: #938302)
  * Don't check for running Onboard if "Typing Assistant" is on (LP: #938302)
  * Fix potential encoding mismatches in exception handlers (LP #958385)
  * Fix idle transparency kicking in while typing into firefox awesomebar
  * Change spelling of the unity property to ONSCREEN_KEYBOARD
  * Properly set up WM_CLASS to be above dash (LP: 915250, LP: #931331)
  * Switch window property to type XA_CARDINAL for compiz
  * Release all keys before quitting Onboard (LP #978430)
  * Simplify opacity transitions to fix some transparency glitches
  * Stop blocking the unity launcher icon for some seconds after each click
  * Skip transition delays on screens without compositing
  * Suppress python error messages when stdin or stderr are lost
  * Fix glitches when toggling force-to-top mode or decoration
  * Don't flash the icon palette in lightdm
  * Don't create the icon palette when embedding
  * Improve robustness of showing/hiding the icon palette on startup
  * Keep keyboard and icon palette above unity-2d dash
  * Don't get resized by compiz grid plugin
  * Try to honor rotating screens in gnome-shell
  * Use deiconify for metacity when minimized by titlebar
  * Remove wnck dependency as gtk3's window-state-event reports iconification
  * Don't save window position for maximized or iconified windows
  * Stop endless loop of auto-showing and hiding hiding onboard in dash
  * Fix visibility of active modifier keys in scanning mode
  * Make sure to remove the maximize button on recreating the keyboard window
  * Don't try to hide keyboard when turning on force-to-top while iconified
  * Switch all translated strings to unicode (LP: #933030)
  * Improve robustness against errors in translations (LP: 968044)
  * Import translations from the Ubuntu Translators team as of 6th May 2012
  * Fix geometries not being saved when exiting from the very first launch
  * Briefly present the keyboard when unhiding
  * Add middle click in hover click mode; requires mousetweaks >= 3.3.90
  * Make improvements in Onboard's...


Changed in onboard (Ubuntu):
status: Confirmed → Fix Released
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