After reinstalling the ALSA drivers, here's the output:
$ ls -R /proc/asound /sys/class/sound /proc/asound: card0 cards devices hwdep Intel modules oss pcm seq timers version
/proc/asound/card0: codec#0 codec#1 id oss_mixer pcm0c pcm0p
/proc/asound/card0/pcm0c: info oss sub0
/proc/asound/card0/pcm0c/sub0: hw_params info prealloc prealloc_max status sw_params
/proc/asound/card0/pcm0p: info oss sub0
/proc/asound/card0/pcm0p/sub0: hw_params info prealloc prealloc_max status sw_params
/proc/asound/oss: devices sndstat
/proc/asound/seq: clients drivers oss queues timer
/sys/class/sound: audio controlC0 hwC0D0 mixer pcmC0D0p sequencer timer card0 dsp hwC0D1 pcmC0D0c seq sequencer2
After reinstalling the ALSA drivers, here's the output:
$ ls -R /proc/asound /sys/class/sound
/proc/asound:
card0 cards devices hwdep Intel modules oss pcm seq timers version
/proc/asound/card0:
codec#0 codec#1 id oss_mixer pcm0c pcm0p
/proc/asound/ card0/pcm0c:
info oss sub0
/proc/asound/ card0/pcm0c/ sub0:
hw_params info prealloc prealloc_max status sw_params
/proc/asound/ card0/pcm0p:
info oss sub0
/proc/asound/ card0/pcm0p/ sub0:
hw_params info prealloc prealloc_max status sw_params
/proc/asound/oss:
devices sndstat
/proc/asound/seq:
clients drivers oss queues timer
/sys/class/sound:
audio controlC0 hwC0D0 mixer pcmC0D0p sequencer timer
card0 dsp hwC0D1 pcmC0D0c seq sequencer2