Crash when testing speakers

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I'm closing this bug report since the process outlined above will automatically open a new bug report which can then dealt with more efficiently. Thanks in advance for your cooperation and understanding.

I'm seeing the exact same problem, but I do not have a /var/crash directory.

If I start the gnome-volume-control from the command line, go to the hardware tab and click the "Test Speakers" button, the app crashes. Every Time.

alord@lobsang:~$ gnome-volume-control
ERROR:gvc-speaker-test.c:390:get_channel_map_for_card: assertion failed: (stream)

(Surely the offending file and line number where the error is happening is enough for a dev to start looking at it?)

lspci -v for my sound h/w is as follows:

00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
        Subsystem: ASRock Incorporation Device 0888
        Flags: bus master, fast devsel, latency 0, IRQ 22
        Memory at f95f8000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: HDA Intel
        Kernel modules: snd-hda-intel

I'm on an up-to-date Maverick, installed from a daily iso today 09/10/10.

Having just rebooted my PC, GVC is not currently crashing. I will continue to monitor.

I'm having this problem as well on an Acer Revo R3610. I've attached the crash dump file.

Same problem. Was trying to determine why sound stopped working on upgrade to Natty.
All channels open in alsamixer, but crashes on test speakers in gnome-volume-control.

00:1b.0 Audio device: Intel Corporation 82801JD/DO (ICH10 Family) HD Audio Controller (rev 02)
 Subsystem: Dell Device 0276

System has HDMI using:
01:00.1 Audio device: ATI Technologies Inc RV710/730
 Subsystem: Dell Device aa38

But was trying to use the analog sound.

In my case, problem went away after killing pulseaudio and restarting it.

Interestingly, while gnome-volume-control showed both audio sources (digital/analog), pavucontrol only listed the HDMI one, and even though gnome-volume-control showed analog as selected, muting the visible HDMI source in pavu, muted the gnome volume.

Killing pulse, and restarting, listed both sources in pavu, and the assertion stopped happening.

speaker-test crash after select "mono duplex" in sound preference on Ubuntu 11.04 Live CD