xenesis, the shutdown hang is fixed already in intrepid-updates, and yes, it is another bug.
Also, note from your alsa-info.sh output:
Simple mixer control 'PCM',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 0 [0%] [-51.00dB]
^^^^^^^^^^^^^^^^^^^^^^^
Front Right: Playback 0 [0%] [-51.00dB]
^^^^^^^^^^^^^^^^^^^^^^^^
You need to increase the levels of the mixer element 'PCM'.
xenesis, the shutdown hang is fixed already in intrepid-updates, and yes, it is another bug.
Also, note from your alsa-info.sh output:
Simple mixer control 'PCM',0 ^^^^^^^ ^^^^^^^ ^^^ ^^^^^^^ ^^^^^^^ ^^^^
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 0 [0%] [-51.00dB]
^^^^^^
Front Right: Playback 0 [0%] [-51.00dB]
^^^^^^
You need to increase the levels of the mixer element 'PCM'.