No more sound with snd_intel8x0/ICH4 on breezy

A recent breezy upgrade took away my sound. I had no manual configuration. There
is no asound.conf.

$ sudo /etc/init.d/alsa-utils restart
 * Shutting down ALSA... * /etc/init.d/alsa-utils: Warning: 'alsactl store'
failed with error message 'alsactl: save_state:1163: No soundcards found...'.
amixer: Mixer attach hw:0 error: No such file or directory !!(REPEATED 17
times)!! [fail]
 * Setting up ALSA... * /etc/init.d/alsa-utils: Warning: 'alsactl restore'
failed with error message 'alsactl: load_state:1236: No soundcards found...'.
amixer: Mixer attach hw:0 error: No such file or directory !!(REPEATED 16
times)!!
 * [ ok ]

$ amixer
amixer: Mixer attach default error: No such file or directory

$ alsamixer
alsamixer: function snd_ctl_open failed for default: No such file or directory

$ lspci |grep Audio
0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)

$ lsmod |grep snd
snd_intel8x0 33152 0
snd_ac97_codec 83452 1 snd_intel8x0
snd_pcm_oss 52704 0
snd_mixer_oss 19296 1 snd_pcm_oss
snd_pcm 88840 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 24164 1 snd_pcm
snd 54884 6
snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 9600 1 snd
snd_page_alloc 10600 2 snd_intel8x0,snd_pcm

$ dpkg -s alsa-utils |grep Version
Version: 1.0.9a-4ubuntu3

$ dpkg -s linux-sound-base |grep Version
Version: 1.0.9b-3ubuntu1