[pulseaudio-discuss] Very crackly audio and crashing from cpu overload

[Chris]

2009/1/8 Lennart Poettering <lennart at poettering.net>:
> Which ALSA sound driver is used?

Here's the lspci output for snd devices:

[root at localhost chris]# /sbin/lsmod  | grep snd
snd_ice1712            56456  3
snd_ice17xx_ak4xxx      7040  1 snd_ice1712
snd_ak4xxx_adda        11136  2 snd_ice1712,snd_ice17xx_ak4xxx
snd_cs8427             10880  1 snd_ice1712
snd_ac97_codec         96672  1 snd_ice1712
snd_seq_dummy           6660  0
snd_seq_oss            30364  0
snd_seq_midi_event      9600  1 snd_seq_oss
snd_seq                48320  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss            41600  0
snd_mixer_oss          16896  1 snd_pcm_oss
snd_pcm                64772  4 snd_ice1712,snd_ac97_codec,snd_pcm_oss
snd_timer              21896  2 snd_seq,snd_pcm
snd_page_alloc         11144  1 snd_pcm
ac97_bus                5504  1 snd_ac97_codec
snd_i2c                 8320  2 snd_ice1712,snd_cs8427
snd_mpu401_uart        10368  1 snd_ice1712
snd_rawmidi            22272  1 snd_mpu401_uart
snd_seq_device          9996  4 snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi
snd                    51768  20
snd_ice1712,snd_ak4xxx_adda,snd_cs8427,snd_ac97_codec,snd_seq_dummy,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_i2c,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore               9416  1 snd

I've been playing with the default-fragments and
default-fragment-size-msec settings but they don't seem to be having
any effect. I'm just getting occasional skipping now - maybe one skip
of a fraction of a second every 3 to 5 seconds. The bad crackling went
when I set tsched=1.

Thanks, Chris.