As add'l info
with guidance from #irc, I've tried
adding
/etc/modprodbe.d/50-sound.conf ... + options snd-hda-intel power_save_controller=0
and adding
/etc/init.d/after.local ... + hda-verb /dev/snd/hwC0D0 0x1c SET_POWER_STATE 0
and launching
cat /usr/local/scripts/alsa-fix.sh #!/bin/bash sudo hda-verb /dev/snd/hwC0D0 0x1c SET_POWER_STATE 0
as a KDE startup script,
and exec'ing
hda-verb /dev/snd/hwC0D0 0x1c SET_POWER_STATE 0
@ desktop shell as uid=<myuser>
None work.
The one thing that DOES work, so far, is @ desktop shell, exec of
sudo hda-verb /dev/snd/hwC0D0 0x1c SET_POWER_STATE 0
as sudo (root).
On exec, I hear a 'pop' through the speakers, and immediately after I can play audio -- withOUT having to physically UNPLUG/REPLUGIN the jack.
Clearly, I can't figure out how to automate this workaround -- not clear where else to try it. Begs the question why it only works in this case.
- Rob