crash while searching for old kernels to clean

i updated ubuntu-tweak to the version 0.7.2 but the bug still affects me.

when searching for old kernels, the window just dissapear with following output in the console (after listing some old kernels):

(ubuntu-tweak:5125): Gtk-CRITICAL **: gtk_text_attributes_ref: assertion `values != NULL' failed

(ubuntu-tweak:5125): Gtk-CRITICAL **: gtk_text_attributes_ref: assertion `values != NULL' failed

(ubuntu-tweak:5125): Pango-CRITICAL **: pango_layout_new: assertion `context != NULL' failed

@fippi-ko

Could you put the full message here? Run Ubuntu Tweak with the debug mode:

ubuntu-tweak -d

full output of "ubuntu-tweak -d"

No thing wrong with the output.

Could you try to create a new user with administrator permission then try to run Ubuntu Tweak in this account?

Ok, i created a new user "ubuntu-tweak" and ran with it following command: "sudo ubuntu-tweak -d" (and then tried to clean the old kernels)
as attachment the output of the terminal.
(is this what you need?)

If I run "ubuntu-tweak" without sudo, following happen:

No protocol specified
No protocol specified
Traceback (most recent call last):
  File "/usr/bin/ubuntu-tweak", line 29, in <module>
    from gi.repository import Unique, GObject, Gdk, Gtk
  File "/usr/lib/python2.7/dist-packages/gi/importer.py", line 76, in load_module
    dynamic_module._load()
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 224, in _load
    overrides_modules = __import__('gi.overrides', fromlist=[self._namespace])
  File "/usr/lib/python2.7/dist-packages/gi/overrides/Gdk.py", line 349, in <module>
    raise RuntimeError("Gdk couldn't be initialized")
RuntimeError: Gdk couldn't be initialized

So have you clean the old kernels successfully by ""sudo ubuntu-tweak -d" in the new user?

no, i got the same problem as before (as you see in the output I attached)

I really have no idea about this...

If you want to clean old kernels, try to run this command under your terminal:

   sudo apt-get remove linux-headers-2.6.38-10 linux-headers-2.6.38-10-generic linux-headers-2.6.38-10-generic-pae linux-headers-2.6.38-11 linux-headers-2.6.38-11-generic linux-headers-2.6.38-11-generic-pae linux-headers-3.0.0-13 linux-headers-3.0.0-13-generic linux-headers-3.0.0-13-generic-pae linux-headers-3.0.0-14 linux-headers-3.0.0-14-generic linux-headers-3.0.0-14-generic-pae linux-headers-3.0.0-15 linux-headers-3.0.0-15-generic linux-headers-3.0.0-15-generic-pae linux-headers-3.0.0-16 linux-headers-3.0.0-16-generic linux-headers-3.0.0-16-generic-pae linux-headers-3.0.0-17 linux-headers-3.0.0-17-generic linux-headers-3.0.0-17-generic-pae linux-image-2.6.38-10-generic linux-image-2.6.38-10-generic-pae linux-image-2.6.38-11-generic linux-image-2.6.38-11-generic-pae linux-image-2.6.38-8-generic linux-image-2.6.38-8-generic-pae linux-image-3.0.0-12-generic linux-image-3.0.0-12-generic-pae linux-image-3.0.0-13-generic linux-image-3.0.0-13-generic-pae linux-image-3.0.0-14-generic linux-image-3.0.0-14-generic-pae linux-image-3.0.0-15-generic linux-image-3.0.0-15-generic-pae linux-image-3.0.0-16-generic linux-image-3.0.0-16-generic-pae linux-image-3.0.0-17-generic linux-image-3.0.0-17-generic-pae

With Quantal it seems broken:

(ubuntu-tweak:804): Gtk-CRITICAL **: gtk_text_attributes_ref: assertion `values != NULL' failed
[OldKernelPlugin][ERROR]
Distribution: Ubuntu 12.10 quantal
Application: Ubuntu Tweak 0.7.3-0~bzr1869+20120706~quantal1
Desktop:ubuntu-2d

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/janitor/oldkernel_plugin.py", line 40, in get_cruft
    self.emit('scan_finished', True, count, size)
TypeError: could not convert type long to (null) required for parameter 2
 (oldkernel_plugin.py:43)

it's also still broken in Precise

@boskysquelch

Did you change your system theme?

the janitor was error on my ubuntu 12.04 LTS
always close unexpectedly

[Janitor][DEBUG] left_view_width is: 235, max_janitor_view_width is: 233 (__init__.py:410)
[Janitor][DEBUG] on_move_handle: 237 (__init__.py:324)
[GSetting][DEBUG] The the value for type: None and value: 237 (gsettings.py:52)
[Janitor][INFO] Scan cruft for all plugins (__init__.py:541)
[Janitor][DEBUG] do_scan_task for chrome_plugin for status: True (__init__.py:568)
[Janitor][INFO] Scan cruft for plugin: ChromiumCachePlugin (__init__.py:571)
[Janitor][DEBUG] Disconnect the cleaned signal, or it will clean many times: chrome_plugin (__init__.py:623)
[Janitor][DEBUG] Pending scan tasks: 2 (__init__.py:631)
[Janitor][DEBUG] do_scan_task for mozilla_plugin for status: True (__init__.py:568)
[Janitor][INFO] Scan cruft for plugin: FirefoxCachePlugin (__init__.py:571)
[Janitor][DEBUG] Disconnect the cleaned signal, or it will clean many times: mozilla_plugin (__init__.py:623)
[Janitor][DEBUG] Pending scan tasks: 1 (__init__.py:631)
[Janitor][DEBUG] do_scan_task for softwarecenter_plugin for status: True (__init__.py:568)
[Janitor][INFO] Scan cruft for plugin: SoftwareCenterCachePlugin (__init__.py:571)
[Janitor][DEBUG] Disconnect the cleaned signal, or it will clean many times: softwarecenter_plugin (__init__.py:623)
[Janitor][DEBUG] total_count is: 1 (__init__.py:634)
[Janitor][INFO] Scan cruft for all plugins (__init__.py:541)
[Janitor][DEBUG] do_scan_task for thumbnailcache_plugin for status: True (__init__.py:568)
[Janitor][INFO] Scan cruft for plugin: ThumbnailCachePlugin (__init__.py:571)
[Janitor][DEBUG] scroll_to_cell: 1 (__init__.py:434)
**
Gtk:ERROR:/build/buildd/gtk+3.0-3.4.2/./gtk/gtktreestore.c:597:gtk_tree_store_get_path: assertion failed: (G_NODE (iter->user_data)->parent != NULL)
Aborted (core dumped)

what happen?

Ubuntu 12.04.2 LTS 3.2.0-51-generic

Bug still present. Dbug attached.

Distribution: Ubuntu 12.04 precise LTS 3.2.0-54-generic
Desktop: gnome-classic
Ubuntu Tweak 0.8.5-1~precise2

Ciao, ho lo stesso problema, appena parte la scansione dei kernel si arresta.
Allegato output di "ubuntu-tweak -d"
---
(ubuntu-tweak:2171): Gtk-CRITICAL **: gtk_text_attributes_ref: assertion `values != NULL' failed

(ubuntu-tweak:2171): Gtk-CRITICAL **: gtk_text_attributes_ref: assertion `values != NULL' failed

(ubuntu-tweak:2171): Pango-CRITICAL **: pango_layout_new: assertion `context != NULL' failed
---