I can confirm this bug. I have changed the value in /etc/pulse/daemon.conf to:
default-sample-channels = 6
I am playing stereo flac files with xmms2. When I pause the playback,
pulseaudio crashes after a few seconds. This behavior is reproducible.
$ pulseaudio
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL surround51:1
ALSA lib setup.c:96:(snd_sctl_install) Cannot lock ctl elem
W: alsa-util.c: Device hw:1 doesn't support 6 channels, changed to 2.
Soft CPU time limit exhausted, terminating.
$ cat /proc/asound/cards
0 [HDMI ]: HDA-Intel - HDA ATI HDMI
HDA ATI HDMI at 0xe0310000 irq 17
1 [Audigy2 ]: Audigy2 - Audigy 4 [SB0610]
Audigy 4 [SB0610] (rev.0, serial:0x10211102) at 0x1000,
irq 21
** Changed in: pulseaudio (Ubuntu)
Status: New => Confirmed
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PulseAudio fails when Gstreamer is paused
https://bugs.launchpad.net/bugs/221038
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