Public bug reported:

Binary package hint: gnome-terminal

Every now and then my gnome-terminal session (all Terminal windows)
freezes/stalls for minutes (usually somewhere between 2-5 minutes of
total unresponsiveness). This happens randomly and does not seem to be
related to the action done in Terminal.

The freeze shows up as non-responding Terminal window and compiz starts
rendering the window as black and white.

Opening xterm from ALT+F2 "Run Application" dialog works fine during the
freeze.

I installed appropriate debug symbols and attached gdb to gnome-terminal
process during a freeze. Here's the result:

(gdb) bt full
#0  0x00007f31445788f1 in nanosleep () from /lib/libpthread.so.0
No symbol table info available.
#1  0x00007f31440c2e88 in IA__g_usleep (microseconds=<value optimized out>) at 
/build/buildd/glib2.0-2.22.3/glib/gtimer.c:170
        request = {tv_sec = 0, tv_nsec = 0}
        remaining = {tv_sec = 10, tv_nsec = 76990604}
#2  0x00007f314648668c in ?? () from /usr/lib/libvte.so.9
No symbol table info available.
#3  0x00007f31440982db in g_timeout_dispatch (source=0x2aac780, 
callback=0x7fff18a25e70, user_data=0x0)
    at /build/buildd/glib2.0-2.22.3/glib/gmain.c:3396
No locals.
#4  0x00007f3144097bce in g_main_dispatch (context=0x247b060) at 
/build/buildd/glib2.0-2.22.3/glib/gmain.c:1960
        dispatch = 0x7f31440982c0 <g_timeout_dispatch>
        user_data = 0x0
        callback = 0x7f3146486470
        cb_funcs = 0x7f31443215f0
        cb_data = 0x2998730
        current_source_link = {data = 0x2aac780, next = 0x0}
        source = 0x2aac780
        current = 0x24c5690
        i = 0
#5  IA__g_main_context_dispatch (context=0x247b060) at 
/build/buildd/glib2.0-2.22.3/glib/gmain.c:2513
No locals.
#6  0x00007f314409b598 in g_main_context_iterate (context=0x247b060, 
block=<value optimized out>, dispatch=<value optimized out>, 
    self=<value optimized out>) at 
/build/buildd/glib2.0-2.22.3/glib/gmain.c:2591
        max_priority = 200
        timeout = 0
        some_ready = 1
        nfds = 15
        allocated_nfds = 1141539136
        fds = <value optimized out>
        __PRETTY_FUNCTION__ = "g_main_context_iterate"
#7  0x00007f314409b9f5 in IA__g_main_loop_run (loop=0x2442ae0) at 
/build/buildd/glib2.0-2.22.3/glib/gmain.c:2799
        self = 0x243d4c0
        __PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#8  0x00007f3145942177 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#9  0x00000000004177d3 in ?? ()
No symbol table info available.
#10 0x00007f31438f8abd in __libc_start_main (main=<value optimized out>, 
argc=<value optimized out>, ubp_av=<value optimized out>, 
    init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value 
optimized out>, stack_end=0x7fff18a262a8) at libc-start.c:220
        result = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 4388922918671750360, 
4276256, 140733606683312, 0, 0, -4389136752414026536, 
                -4428708338214103848}, mask_was_saved = 0}}, priv = {pad = 
{0x0, 0x0, 0x4366b0, 0x7fff18a262b8}, data = {prev = 0x0, cleanup = 0x0, 
              canceltype = 4417200}}}
        not_first_call = <value optimized out>
#11 0x0000000000414049 in ?? ()
No symbol table info available.
#12 0x00007fff18a262a8 in ?? ()
No symbol table info available.
#13 0x000000000000001c in ?? ()
No symbol table info available.
#14 0x0000000000000001 in ?? ()
No symbol table info available.
#15 0x00007fff18a26a77 in ?? ()
No symbol table info available.
#16 0x0000000000000000 in ?? ()
No symbol table info available.

I'm running kernel
Linux semyol-329-b 2.6.31-9-rt #152-Ubuntu SMP PREEMPT RT Thu Oct 15 13:22:24 
UTC 2009 x86_64 GNU/Linux
with kernel flag "nohz=on" on dual core processor in case it makes a difference.

ProblemType: Bug
Architecture: amd64
CheckboxSubmission: f0bf0101e3df07a87acfbc156f0db03d
CheckboxSystem: b5acb6c9ca4017b1d44043910f45329d
Date: Thu May  6 12:58:15 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate amd64 
(20091020.3)
Package: gnome-terminal 2.28.1-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.31-9.152-rt
SourcePackage: gnome-terminal
Uname: Linux 2.6.31-9-rt x86_64

** Affects: gnome-terminal (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug

-- 
Terminal freezes/stalls randomly
https://bugs.launchpad.net/bugs/576333
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