pcmanfm crashed with SIGSEGV in gtk_widget_get_toplevel()

StacktraceTop:
 IA__gtk_widget_get_toplevel (widget=0xaaaaaaaaaaaaaaaa) at /build/buildd/gtk+2.0-2.24.5/gtk/gtkwidget.c:8218
 gtk_widget_get_screen_unchecked (widget=0x125c020) at /build/buildd/gtk+2.0-2.24.5/gtk/gtkwidget.c:7569
 IA__gtk_widget_create_pango_context (widget=0x125c020) at /build/buildd/gtk+2.0-2.24.5/gtk/gtkwidget.c:7327
 IA__gtk_widget_get_pango_context (widget=0x125c020) at /build/buildd/gtk+2.0-2.24.5/gtk/gtkwidget.c:7267
 IA__gtk_widget_create_pango_layout (widget=0x125c020, text=0x115cc80 "Desktop") at /build/buildd/gtk+2.0-2.24.5/gtk/gtkwidget.c:7370

Thank you for your bug report. Forwarded upstream : https://sourceforge.net/tracker/?func=detail&aid=3402735&group_id=156956&atid=801864

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/926262

lubuntu
DISTRIB_DESCRIPTION="Ubuntu precise (development branch)"
Linux ThinkPadT40 3.2.0-12-generic #21-Ubuntu SMP Tue Jan 31 18:40:37 UTC 2012 i686 i686 i386 GNU/Linux

Thinkpad T40 was doing an update/upgrade to Feb 4 level. Only thing up was terminal. Pcmanfm was not even started. Does it run in the background doing something for the upgrade?

Jerry

I encounter this often when updating, and also when I have the software center open.

Here's my info:

00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 12h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Device 9647
00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI BeaverCreek HDMI Audio [Radeon HD 6500D and 6400G-6600G series]
00:04.0 PCI bridge: Advanced Micro Devices [AMD] Family 12h Processor Root Port
00:05.0 PCI bridge: Advanced Micro Devices [AMD] Family 12h Processor Root Port
00:06.0 PCI bridge: Advanced Micro Devices [AMD] Family 12h Processor Root Port
00:11.0 SATA controller: Advanced Micro Devices [AMD] Hudson SATA Controller [AHCI mode]
00:12.0 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)
00:12.2 USB controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)
00:13.0 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)
00:13.2 USB controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)
00:14.0 SMBus: Advanced Micro Devices [AMD] Hudson SMBus Controller (rev 13)
00:14.2 Audio device: Advanced Micro Devices [AMD] Hudson Azalia Controller (rev 01)
00:14.3 ISA bridge: Advanced Micro Devices [AMD] Hudson LPC Bridge (rev 11)
00:14.4 PCI bridge: Advanced Micro Devices [AMD] Hudson PCI Bridge (rev 40)
00:16.0 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)
00:16.2 USB controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6
00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5
00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7
01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5116 PCI Express Card Reader (rev 01)

Aye, I have a strong feeling this is due to Lubuntu Software Center. I just got this bug twice in one hour, both while using LSC.

What is the Lubuntu Software Center? I don't think this bug is exclusively related to its usage because it happened to me too.

Lubuntu software center was installed from the Lubuntu 12.04 iso image. It
is a python application, lubuntu-software-center, that looks like ubuntu
software center. Sorry I can't be more helpful.
~~~~~~~~~~~~~~~
<email address hidden> <email address hidden>
402-218-1432

On Fri, Mar 16, 2012 at 16:32, Christian Mertes
<email address hidden>wrote:

> What is the Lubuntu Software Center? I don't think this bug is
> exclusively related to its usage because it happened to me too.
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (948980).
> https://bugs.launchpad.net/bugs/838489
>
> Title:
> pcmanfm crashed with SIGSEGV in gtk_widget_get_toplevel()
>
> Status in PCManFM - File Manager:
> Unknown
> Status in “pcmanfm” package in Ubuntu:
> Confirmed
>
> Bug description:
> dont know what happened
>
> ProblemType: Crash
> DistroRelease: Ubuntu 11.10
> Package: pcmanfm 0.9.9-0ubuntu1
> ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
> Uname: Linux 3.0.0-9-generic x86_64
> Architecture: amd64
> Config_pcmanfm_System_lxde: Error: [Errno 2] No such file or directory:
> '/etc/xdg/pcmanfm/lxde/pcmanfm.conf'
> Date: Wed Aug 31 21:05:32 2011
> ExecutablePath: /usr/bin/pcmanfm
> InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110716)
> Pref_Config_System_lxde:
> [Preferred Applications]
> WebBrowser=firefox.desktop
> MailClient=
> ProcCmdline: pcmanfm --desktop --profile LXDE
> ProcEnviron:
> LANGUAGE=en_US:en
> PATH=(custom, no user)
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> SegvAnalysis:
> Segfault happened at: 0x7f4a2a308223 <gtk_widget_get_toplevel+83>: mov
> 0x58(%rbx),%rax
> PC (0x7f4a2a308223) ok
> source "0x58(%rbx)" (0xaaaaaaaaaaaaab02) not located in a known VMA
> region (needed readable region)!
> destination "%rax" ok
> SegvReason: reading unknown VMA
> Signal: 11
> SourcePackage: pcmanfm
> StacktraceTop:
> gtk_widget_get_toplevel () from
> /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
> ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
> gtk_widget_create_pango_context () from
> /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
> gtk_widget_get_pango_context () from
> /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
> gtk_widget_create_pango_layout () from
> /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
> Title: pcmanfm crashed with SIGSEGV in gtk_widget_get_toplevel()
> UpgradeStatus: Upgraded to oneiric on 2011-08-15 (17 days ago)
> UserGroups: adm admin cdrom dialout lpadmin mythtv netdev plugdev
> sambashare
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/pcmanfm/+bug/838489/+subscriptions
>

No sorry, I forgot the smileys. I was just kidding. What I was actually trying to say is: I never heard of the Lubuntu Software Center before reading this bug report but I'm having the same crashes so it's not uniquely related to the Lubuntu Software Center.

@Christian:
Indeed, I am using pcmanfm on xubuntu, where I do not have any other lubuntu related components, and this crash appears to have happened to me as well.

I can confirm also that it's nothing to do with lubuntu software center, that seems to be having a bug altogether unrealated. PCManFm seems to close by itself on background processes after boot. Upon opening pcmanfm later for file viewing it lasted approx two minutes before dying.

pcmanfm in background doing nothing while full screen firefox in foregroub.

pangolin 12.04 beta 2 candidate 20120325