[Pkg-xfce-devel] Bug#659033: Bug#659033: [xfce4-mixer] Crashing when starting/stopping sound playback

[Manolo]

On Tue, 07 Feb 2012 16:59:11 +0100
Yves-Alexis Perez wrote:
> On mar., 2012-02-07 at 16:52 +0100, Manolo wrote:
> > Hi,
> > Every time I start or stop playing sound xfce4-mixer crash with
> > 
> > xfce4-mixer: simple_none.c:1350: get_enum_item_ops: Assertion
> > `helem' failed.
> 
> Could you install alsa debugging symbols?
> 
> Regards,

Well, I'm no sure if I've installed the right *-dbg packages, but here
is the new backtrace:

(gdb) bt
#0  0x00007f358cbba405 in *__GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007f358cbbd680 in *__GI_abort () at abort.c:92
#2  0x00007f358cbb35b1 in *__GI___assert_fail (assertion=0x7f3584b6bb1a "helem", file=<optimized out>, line=1350, function=0x7f3584b6bab0 "get_enum_item_ops") at assert.c:81
#3  0x00007f3584afe657 in get_enum_item_ops (elem=<optimized out>, channel=SND_MIXER_SCHN_FRONT_LEFT, itemp=0x7f3584aaf91c) at simple_none.c:1350
#4  0x00007f3584dcb304 in gst_alsa_mixer_update_option (alsa_opts=0x7f3590b3dd10, mixer=<optimized out>) at gstalsamixer.c:894
#5  gst_alsa_mixer_update (mixer=0x7f3590b87d30, elem=0x7f3590bd0700) at gstalsamixer.c:237
#6  0x00007f3584dcb5d5 in gst_alsa_mixer_elem_handle_callback (elem=0x7f3590bd0700, mask=<optimized out>) at gstalsamixer.c:254
#7  0x00007f3584afae3d in snd_mixer_elem_throw_event (mask=4294967295, elem=0x7f3590bd0700) at mixer.c:321
#8  snd_mixer_elem_remove (elem=0x7f3590bd0700) at mixer.c:456
#9  0x00007f3584b00690 in simple_event (class=0x7f3590b87dd0, mask=2, helem=0x7f3590bc84f0, melem=0x7f3590bd0700) at simple_none.c:1680
#10 0x00007f3584afa4fe in hctl_elem_event_handler (helem=0x7f3590bc84f0, mask=2) at mixer.c:159
#11 0x00007f3584af0429 in snd_hctl_elem_throw_event (mask=<optimized out>, elem=<optimized out>) at hcontrol.c:213
#12 snd_hctl_handle_event (event=0x7f3584aafa40, hctl=0x7f3590bb8800) at hcontrol.c:767
#13 snd_hctl_handle_events (hctl=0x7f3590bb8800) at hcontrol.c:793
#14 0x00007f3584afb659 in snd_mixer_handle_events (mixer=0x7f3590baf770) at mixer.c:847
#15 0x00007f3584dcad6d in task_monitor_alsa (data=0x7f3590b87d30) at gstalsamixer.c:471
#16 0x00007f358dd30420 in gst_task_func (task=0x7f3590bb9180) at gsttask.c:318
#17 0x00007f358d5cad08 in g_thread_pool_thread_proxy (data=<optimized out>) at /tmp/buildd/glib2.0-2.30.2/./glib/gthreadpool.c:319
#18 0x00007f358d5c87e6 in g_thread_create_proxy (data=0x7f3590bd3130) at /tmp/buildd/glib2.0-2.30.2/./glib/gthread.c:1962
#19 0x00007f358cf12b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#20 0x00007f358cc5d4ad in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#21 0x0000000000000000 in ?? ()

Best Regards,
-- 
Manolo Díaz