In Unity/Natty the window border disapears [segfault at 318, error 6 in unity-window-decorator]

[Chris Rippe]

After a while of running in Unity the window border stops rendering. So I no longer have access to the minimize maximize, move windows. I am using Latitude E6510 with dual monitor and the experimental 3D support driver for Nvidia.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-terminal 2.32.1-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Wed May 4 10:48:55 2011
ExecutablePath: /usr/bin/gnome-terminal
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)

[Fabio Marconi (fabiomarconi)]

May 4 10:12:19 chrisrippe-Latitude-E6510 kernel: [ 9126.206545] show_signal_msg: 24 callbacks suppressed
May 4 10:12:19 chrisrippe-Latitude-E6510 kernel: [ 9126.206553] unity-window-de[1601]: segfault at 318 ip 0000000000415d6f sp 00007fffb3960c80 error 6 in unity-window-decorator[400000+1b000]

[Fabio Marconi (fabiomarconi)]

from kern.log

May 2 09:17:54 chrisrippe-Latitude-E6510 kernel: [ 671.863318] unity-window-de[1579]: segfault at 318 ip 0000000000415d6f sp 00007fff92c96a40 error 6 in unity-window-decorator[400000+1b000]

[Chris West (faux)]

"Me too!"

Identical apart from stack:
kernel: [192666.963476] unity-window-de[14150]: segfault at 318 ip 0000000000415d6f sp 00007fff74372e70 error 6 in unity-window-decorator[400000+1b000]

Dual-head, primary on the right (i.e. Unity taskbar sits between monitors), nvidia-current binary driver, 270.41.06-0ubuntu1.

[davidetkarine (saveurlinux)]

I'm also affected by this bug has well if i don't use dual screen.

[trespasserw (trespasserw)]

Probably a duplicate of https://bugs.launchpad.net/ubuntu/+source/unity/+bug/775430, https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/778075

[Rocko (rockorequin)]

Yes, bug #778075 looks like a duplicate of this one. I often get the same crash (segfault at 318) when running Java applications. I got a stack trace from gdb that shows it crashing in g_closure_invoke ():

(gdb) run
Starting program: /usr/bin/unity-window-decorator
[Thread debugging using libthread_db enabled]
[New Thread 0x7fffedb8b700 (LWP 7766)]
[New Thread 0x7fffe367d700 (LWP 7767)]

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-WARNING **: invalid unclassed pointer in cast to `GObject'

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

Program received signal SIGSEGV, Segmentation fault.
0x0000000000415d6f in ?? ()
(gdb) backtrace
#0 0x0000000000415d6f in ?? ()
#1 0x00007ffff4ed581c in g_closure_invoke ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#2 0x00007ffff4ee7019 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3 0x00007ffff4ef0258 in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4 0x00007ffff4ef041f in g_signal_emit ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5 0x00007ffff7228d44 in ?? () from /usr/lib/libwnck-1.so.22
#6 0x00007ffff72293d4 in ?? () from /usr/lib/libwnck-1.so.22
#7 0x00007ffff4609bcd in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x00007ffff460a3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9 0x00007ffff460a9f2 in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff6d04af7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#11 0x0000000000409864 in main ()

[Laurent Schoupi (schoupi)]

I guess it's a duplicate of https://bugs.launchpad.net/unity/+bug/775430