[LAU] Jack Crashing

Hi,

I'm having trouble with Jack on a Dell D420 laptop. Sound is configured
and plays fine but when I start jack I get regular xruns and then it
crashes after about 30 seconds. If I start and audio app, I can see it
appear in the connections, but no sound plays and then when jackd goes
down, it complains about a broken pipe. I'm totally stumped. Its not a
problem with the frames/period as I've tried all different combos (up to
1024 frames/period with 8 periods per buffer) All that is displayed in

Any ideas?

lspci reports:

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
Definition Audio Controller (rev 01)

lsmod reports:

snd_rtctimer 4640 1
snd_hda_intel 346136 3
snd_pcm_oss 42400 0
snd_mixer_oss 18048 1 snd_pcm_oss
snd_pcm 78852 2 snd_hda_intel,snd_pcm_oss
snd_page_alloc 11400 2 snd_hda_intel,snd_pcm
snd_hwdep 10628 1 snd_hda_intel
snd_seq_dummy 4868 0
snd_seq_oss 35968 0
snd_seq_midi 9376 0
snd_rawmidi 25632 1 snd_seq_midi
snd_seq_midi_event 8576 2 snd_seq_oss,snd_seq_midi
snd_seq 54992 10
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 24836 3 snd_rtctimer,snd_pcm,snd_seq
snd_seq_device 9612 5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd 57636 20
snd_rtctimer,snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_hwdep,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 9312 1 snd

/usr/bin/jackd -v -R -p1024 -t5000 -dalsa -dhw:0 -r44100 -p1024 -n8 gives:

getting driver descriptor from /usr/lib/jack/jack_freebob.so
getting driver descriptor from /usr/lib/jack/jack_oss.so
getting driver descriptor from /usr/lib/jack/jack_alsa.so
getting driver descriptor from /usr/lib/jack/jack_dummy.so
jackd 0.109.2
Copyright 2001-2005 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.
server `default' registered
registered builtin port type 32 bit float mono audio
registered builtin port type 8 bit raw midi
clock source = system clock via clock_gettime
loading driver ..
new client: alsa_pcm, id = 1 type 1 @ 0x805a4c0 fd = -1
apparent rate = 44100
creating alsa driver ... hw:0|hw:0|1024|8|44100|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 8 periods
ALSA: final selected sample format for capture: 32bit little-endian
ALSA: use 8 periods for capture
ALSA: final selected sample format for playback: 32bit little-endian
ALSA: use 8 periods for playback
new buffer size 1024
registered port system:capture_1, offset = 4096
registered port system:capture_2, offset = 8192
registered port system:playback_1, offset = 0
registered port system:playback_2, offset = 0
++ jack_rechain_graph():
client alsa_pcm: internal client, execution_order=0.
-- jack_rechain_graph()
7314 waiting for signals
new client: alsa-jack.jackP.7319.0, id = 2 type 2 @ 0xb7edd000 fd = 10
registered port alsa-jack.jackP.7319.0:out_000, offset = 12288
registered port alsa-jack.jackP.7319.0:out_001, offset = 16384
++ jack_rechain_graph():
client alsa_pcm: internal client, execution_order=0.
client alsa-jack.jackP.7319.0: start_fd=5, execution_order=0.
client alsa-jack.jackP.7319.0: wait_fd=7, execution_order=1 (last client).
-- jack_rechain_graph()
connect alsa-jack.jackP.7319.0:out_000 and system:playback_1 (output)
++ jack_rechain_graph():
client alsa_pcm: internal client, execution_order=0.
client alsa-jack.jackP.7319.0: start_fd=5, execution_order=0.
client alsa-jack.jackP.7319.0: wait_fd=7, execution_order=1 (last client).
-- jack_rechain_graph()
connect alsa-jack.jackP.7319.0:out_001 and system:playback_2 (output)
++ jack_rechain_graph():
client alsa_pcm: internal client, execution_order=0.
client alsa-jack.jackP.7319.0: start_fd=5, execution_order=0.
client alsa-jack.jackP.7319.0: wait_fd=7, execution_order=1 (last client).
-- jack_rechain_graph()
jackd watchdog: timeout - killing jackd

Thanks

Steven

-- 
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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