[dash] crashes in event loop

[Thad-daddyslick]

Binary package hint: unity-2d

I've been having multiple issues with crashes of the Applications and Files menus in Unity proper. Per Mikkel Kamstrup Erlandsen's request in the 742085 comments, I tried Unity-2d to see if the problems would persist -- and it looks like we've got our answer. (Or something completely different that just LOOKS related...)

Applications and Files menus show up blank, and typing commands into them does not seem to work. (Alt-F2 works for running commands, and DOES show recently-run programs.) I believe this crash occurred when I tried to open the Applications menu.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity-2d-places 3.8.1-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
AssertionMessage: unity-2d-places: ../../src/xcb_io.c:221: poll_for_event: Assertion `(((long) (event_sequence) - (long) (dpy->request)) <= 0)' failed.
Date: Wed Mar 30 11:46:13 2011
ExecutablePath: /usr/bin/unity-2d-places
ProcCmdline: /usr/bin/unity-2d-places
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
Signal: 6
SourcePackage: unity-2d
StacktraceTop:
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 __assert_fail (assertion=0x7fbd7505ab50 "(((long) (event_sequence) - (long) (dpy->request)) <= 0)", file=<value optimized out>, line=221, function=<value optimized out>) at assert.c:81
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
Title: unity-2d-places assert failure: unity-2d-places: ../../src/xcb_io.c:221: poll_for_event: Assertion `(((long) (event_sequence) - (long) (dpy->request)) <= 0)' failed.
UpgradeStatus: Upgraded to natty on 2011-03-20 (9 days ago)
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev sambashare scanner video
XsessionErrors:
 (gnome-power-manager:14170): Gtk-WARNING **: Failed to load type module: (null)
 (gnome-power-manager:14170): Gtk-WARNING **: Failed to load type module: (null)
 (nm-applet:14213): GdkPixbuf-CRITICAL **: gdk_pixbuf_composite: assertion `dest_y >= 0 && dest_y + dest_height <= dest->height' failed

[Apport retracing service (apport)]

StacktraceTop:
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 __assert_fail (assertion=0x7fbd7505ab50 "(((long) (event_sequence) - (long) (dpy->request)) <= 0)", file=<value optimized out>, line=221, function=<value optimized out>) at assert.c:81
 poll_for_event (dpy=0xbf24b0) at ../../src/xcb_io.c:221
 poll_for_response (dpy=0xbf24b0) at ../../src/xcb_io.c:235

[sarton85 (sarton85)]

I am using Unity 2D. When I opened the applications menu through the main ubuntu menu in the top left corner, it didn't want to close anymore. The Unity sidebar/launcher and the opened applications meme became unresponsive for about a minute. Afterwards it closed down and asked me to file a bug report.

If you need any more info, just let me know.

[Ugo Riboni (uriboni)]

Please see also bug 747648 for a crasher (with many duplicates) in the spread that is caused by the same assert in the communication between GTK and X11

[Florian Boucault (fboucault)]

Interesting stacktrace available in duplicate bug #814255

[Florian Boucault (fboucault)]

bug #814255 is in fact not a duplicate

[Florian Boucault (fboucault)]

Closing down as the latest reproduction is over 2 months old and the stack trace is not pointing to anything useful at all unfortunately.