$ uname -a Linux ace1 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux $ lspci #The card is actually a PCI Creative X-Fi XtremeAudio 05:01.0 Multimedia audio controller: Creative Labs CA0106 Soundblaster $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: CA0106 [CA0106], device 0: ca0106 [CA0106] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: CA0106 [CA0106], device 1: ca0106 [CA0106] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: CA0106 [CA0106], device 2: ca0106 [CA0106] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: CA0106 [CA0106], device 3: ca0106 [CA0106] Subdevices: 1/1 Subdevice #0: subdevice #0 $ tail /var/log/syslog Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: snd_pcm_avail() returned a value that is exceptionally large: 272640 bytes (710 ms). Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_ca0106'. Please report this issue to the ALSA developers. Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: snd_pcm_dump(): Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Multi PCM Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Channel bindings: Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: 0: slave 0, channel 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: 1: slave 0, channel 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: 2: slave 1, channel 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: 3: slave 1, channel 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Its setup is: Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: stream : PLAYBACK Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: access : RW_INTERLEAVED Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: format : S16_LE Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: subformat : STD Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: channels : 4 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: rate : 48000 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: exact rate : 48000 (48000/1) Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: msbits : 16 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: buffer_size : 3840 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_size : 480 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_time : 10000 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: tstamp_mode : ENABLE Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_step : 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: avail_min : 480 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_event : 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: start_threshold : -1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: stop_threshold : 2013265920 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: silence_threshold: 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: silence_size : 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: boundary : 2013265920 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Slave #0: Hardware PCM card 0 'CA0106' device 0 subdevice 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Its setup is: Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: stream : PLAYBACK Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: access : MMAP_INTERLEAVED Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: format : S16_LE Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: subformat : STD Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: channels : 2 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: rate : 48000 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: exact rate : 48000 (48000/1) Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: msbits : 16 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: buffer_size : 3840 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_size : 480 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_time : 10000 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: tstamp_mode : ENABLE Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_step : 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: avail_min : 480 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_event : 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: start_threshold : -1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: stop_threshold : 2013265920 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: silence_threshold: 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: silence_size : 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: boundary : 2013265920 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: appl_ptr : 148947840 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: hw_ptr : 148978256 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Slave #1: Hardware PCM card 0 'CA0106' device 1 subdevice 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: Its setup is: Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: stream : PLAYBACK Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: access : MMAP_INTERLEAVED Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: format : S16_LE Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: subformat : STD Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: channels : 2 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: rate : 48000 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: exact rate : 48000 (48000/1) Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: msbits : 16 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: buffer_size : 3840 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_size : 480 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_time : 10000 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: tstamp_mode : ENABLE Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_step : 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: avail_min : 480 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: period_event : 1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: start_threshold : -1 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: stop_threshold : 2013265920 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: silence_threshold: 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: silence_size : 0 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: boundary : 2013265920 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: appl_ptr : 148947840 Nov 5 18:17:41 ace1 pulseaudio[2047]: alsa-util.c: hw_ptr : 148978080