computer-janitor-gtk crashed with KeyError in create_column()

Affects me too, Computer Janitor fails to start - upgraded from Karmic to Lucid.

Marking Triaged, Medium. Should be enough debugging information here for a developer to take a look and begin working on the problem. Thank you for reporting this to us!

yep, affects me, too
-- is reproducable:
   a) any time i ran the synaptic package manager and do update, when starting computer janitor right after it while synaptic is open and finished with updates
   b) any time after doing a Reload of package information, if update was done or not; window left open, starting janitor it crashes
   c) even if synaptic is closed, starting janitor RIGHT AFTER IT it crashes; in this case it seems synaptic did not closed quickly enough

System is HP Compaq 6715b -- Ubuntu Lucid Lynx in use for real work / production environment, to guarantee real world bug reporting

OS: Ubuntu.10.4.LucidLynx.Alpha.En.Us.x64
CPU: AMD Turion x2 2 Ghz T60
RAM: 4 GB 667 MHz Dual channel DDR 2
HDD: SATA Compact Flash 8 GB SanDisk Ultra III with LVM formatted
FPR: Authentec 2501
etc. if someone needs special info to fix this, leave me a note and i will run necessary tools

Good Luck Brothers.

In Ubuntu lucid (development branch) with computer-janitor-gtk version 1.14-0ubuntu1

$ gksu --desktop /usr/share/applications/computer-janitor-gtk.desktop computer-janitor-gtk
Traceback (most recent call last): File "/usr/sbin/computer-janitor-gtk", line 30, in <module>
    app.run(computerjanitorapp.GtkUserInterface)
  File "/usr/share/computerjanitor/computerjanitorapp/app.py", line 101, in run
    ui.run(options, args)
  File "/usr/share/computerjanitor/computerjanitorapp/ui_gtk.py", line 211, in run
    self.create_column('unused_treeview', self.unused_filter)
  File "/usr/share/computerjanitor/computerjanitorapp/ui_gtk.py", line 291, in create_column
    treeview = self.widgets[widget_name]
KeyError: 'unused_treeview'

Happens to me too.
Ubuntu 10.04 LTS Alpha 2
If it matters, mine is 64bit. I believe that this should be moved to critical importance, because it doesn't open at all.
Any workarounds?

Happens to me too
Ubuntu 10.04 LTS Alpha 2

also on lucid amd64

Happens to me too on my laptop HP 6830s and linux kernel 2.6.33-020633rc4-generic

Please do not change this bug from Triaged, otherwise chances are it won't be fixed. Thank you.

Acontece toda vez que rodo o "Mantenedor do Sistema" (happens ever that I run the "System Maintainer", I think)
Estou usando (My OS) : Ubuntu 10.04 LTS - the Lucid Lynx
My PC:
Dual Core 1.6GHz
160Gb HD
2Gb RAM

Thanks!

Happens to me on lucid lynx 64bit too!

cada vez que intento abrir el "Encargado de Limpieza" truena.

Here's a little more information, as it happens to me too. Note that it seems to work fine on Karmic, but crashes every time in Lucid.

So I set a pdb breakpoint in GtkUserInterface.find_and_bind_widgets(). The problem under Lucid is that o.get_property('name') always returns the empty string, which means all objects returned from builder.get_objects() get bound to the empty string in the self.widgets dictionary. Of course this means that you end up with just one entry in self.widgets, where the empty string is mapped to the last object returned from builder.get_objects(). This means of course that self.widgets['unused_treeview'] will throw the KeyError.

Interestingly enough, I traced the same method in the same branch on Karmic, and here everything succeeds. The o.get_property('name') in find_and_bind_widgets() appears to return the object names just fine, so all is hunky dory.

I don't know enough about PyGtk to provide much additional information, but it sure smells like a bug in some lower-level API. Perhaps .get_property() has been broken in Lucid? I will spend a little more time debugging this and trying to learn something about PyGtk, and will update this bug report with any additional information. I do agree though that this is a critical bug because it prevents janitor from even starting.

Okay, a little bit more information, but sadly not enough to know what's going on.

I gdb'd the process into pygobject_get_property() in python-gobject. What appears to be happening is that the call to

g_value_init(&value, G_PARAM_SPEC_VALUE_TYPE(pspec));

is filling value with an empty string, so pyg_param_gvalue_as_pyobject() will naturally return the Python empty string object. I have no idea why g_value_init() is doing that, and gdb is not behaving well enough for me to trace into that function.

This Bug Affects Me As Well On I386 Ubuntu 10.04 Alpha 2 As An Upgrade From Ubuntu 9.10 Gold Using Sudo Update-Manager -D.

Description: Ubuntu lucid (development branch)
Release: 10.04

computer-janitor-gtk:
  Installato: 1.14-0ubuntu1
  Candidato: 1.14-0ubuntu1
  Tabella versione:
 *** 1.14-0ubuntu1 0
        500 http://archive.ubuntu.com lucid/main Packages
        100 /var/lib/dpkg/status

Running by terminal i get:

Traceback (most recent call last):
  File "/usr/sbin/computer-janitor-gtk", line 30, in <module>
    app.run(computerjanitorapp.GtkUserInterface)
  File "/usr/share/computerjanitor/computerjanitorapp/app.py", line 101, in run
    ui.run(options, args)
  File "/usr/share/computerjanitor/computerjanitorapp/ui_gtk.py", line 211, in run
    self.create_column('unused_treeview', self.unused_filter)
  File "/usr/share/computerjanitor/computerjanitorapp/ui_gtk.py", line 291, in create_column
    treeview = self.widgets[widget_name]
KeyError: 'unused_treeview'

mvo fixed this with the attached patch (in r218 for lp:computer-janitor). He'll upload a new version soon.

Great thank you..Everything solid so far:)  nice work!

--- On Thu, 1/21/10, Barry Warsaw <email address hidden> wrote:

From: Barry Warsaw <email address hidden>
Subject: [Bug 503727] Re: computer-janitor-gtk crashed with KeyError in create_column()
To: <email address hidden>
Date: Thursday, January 21, 2010, 9:02 AM

mvo fixed this with the attached patch (in r218 for lp:computer-
janitor).  He'll upload a new version soon.

** Attachment added: "patch.txt"
   http://launchpadlibrarian.net/38187891/patch.txt

--
computer-janitor-gtk crashed with KeyError in create_column()
https://bugs.launchpad.net/bugs/503727
You received this bug notification because you are a direct subscriber
of a duplicate bug.

This bug was fixed in the package computer-janitor - 1.14.1-0ubuntu1

---------------
computer-janitor (1.14.1-0ubuntu1) lucid; urgency=low

  * computerjanitorapp/ui_gtk.py:
    - fix find_and_bind_widgets (LP: #503727)
 -- Michael Vogt <email address hidden> Thu, 21 Jan 2010 15:50:52 +0100

Works fine now.
Thank you!

cheers
Tom

Michael,

Have you tried either the new version of CJ that comes with Lucid (1.14.1-0ubuntu1) or version 2.0 which will hopefully land for beta 2, and which is available in my PPA: https://edge.launchpad.net/~barry/+archive/python

Either one should solve this problem.

This appears fixed now - running 1.14.1-0ubuntu2 in 10.04 beta 1 - Fix Released and removed assignee.

Thanks Teej. In general I don't think you need to remove the assignee when a bug gets fix released.