I managed to get proper sound out of the pandaboard headphone jack once, but since I rebooted it sounds completely mangled again. I tried different settings in alsamixer, but unlike before that can't seem to fix it.
When I try the recommended config step
$this->bbcode_second_pass_code('', 'sudo alsaucm -c PandaBoard set _verb HiFi')
I get an error message:
$this->bbcode_second_pass_code('', '
Im setting defaults
ALSA lib main.c:279:(execute_sequence) unable to execute cset 'name='DL1 Mixer Multimedia' 1'
ALSA lib main.c:1475:(set_verb_user) error: failed to initialize new use case: HiFi
alsaucm: error failed to set _verb=HiFi: No such file or directory')