ubuntu@ubuntu-desktop:~$ lspci |grep -i audio
00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R)
AC'97 Audio Controller (rev 02)
ubuntu@ubuntu-desktop:~$ cat /proc/asound/cards
0 [ICH5 ]: ICH4 - Intel ICH5
Intel ICH5 with ALC655 at irq 17
1 [UART ]: MPU-401 UART - MPU-401 UART
MPU-401 UART at 0x330, irq 10
ubuntu@ubuntu-desktop:~$ alsactl -v
alsactl version 1.0.27.2
ubuntu@ubuntu-desktop:~$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version k3.13.0-32-generic.
ubuntu@ubuntu-desktop:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ICH5 [Intel ICH5], device 0: Intel ICH [Intel ICH5]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: ICH5 [Intel ICH5], device 4: Intel ICH - IEC958 [Intel ICH5 - IEC958]
Subdevices: 1/1
Subdevice #0: subdevice #0
ubuntu@ubuntu-desktop:~$ sudo lshw -C sound
[sudo] password for ubuntu:
Sorry, try again.
[sudo] password for ubuntu:
PCI (sysfs)
*-multimedia
description: Multimedia audio controller
product: 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller
vendor: Intel Corporation
physical id: 1f.5
bus info: pci@0000:00:1f.5
version: 02
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=snd_intel8x0 latency=0
resources: irq:17 ioport:e500(size=256) ioport:e600(size=64)
memory:fb101000-fb1011ff memory:fb102000-fb1020ff
ubuntu@ubuntu-desktop:~$
ubuntu@ubuntu-desktop:~$ lsmod | grep -i snd
snd_wavefront 38120 0
snd_cs4236 29167 0
snd_opl3_lib 18651 2 snd_wavefront,snd_cs4236
snd_hwdep 13272 2 snd_wavefront,snd_opl3_lib
snd_wss_lib 29835 2 snd_wavefront,snd_cs4236
snd_mpu401 13724 0
snd_mpu401_uart 13865 3 snd_wavefront,snd_cs4236,snd_mpu401
snd_seq_midi 13132 0
snd_seq_midi_event 14475 1 snd_seq_midi
snd_intel8x0 33110 3
snd_rawmidi 25135 3 snd_wavefront,snd_mpu401_uart,snd_seq_midi
snd_ac97_codec 105709 1 snd_intel8x0
ac97_bus 12642 1 snd_ac97_codec
snd_seq 55383 2 snd_seq_midi_event,snd_seq_midi
snd_pcm 85501 4
snd_ac97_codec,snd_intel8x0,snd_wss_lib,snd_cs4236
snd_seq_device 14137 4 snd_seq,snd_rawmidi,snd_opl3_lib,snd_seq_midi
snd_page_alloc 14230 3 snd_intel8x0,snd_wss_lib,snd_pcm
snd_timer 28584 4 snd_wss_lib,snd_pcm,snd_seq,snd_opl3_lib
snd 60871 21
snd_ac97_codec,snd_intel8x0,snd_hwdep,snd_timer,snd_wss_lib,snd_pcm,snd_seq,snd_rawmidi,snd_wavefront,snd_mpu401_uart,snd_seq_device,snd_cs4236,snd_opl3_lib,snd_seq_midi,snd_mpu401
soundcore 12600 1 snd
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https://bugs.launchpad.net/bugs/1137997
Title:
[ICH4 - Intel ICH6, playback] Underruns, dropouts or crackling sound
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