I have an HP HTPC running 10.04 as a CORE/hybrid with a mobo sound card (NVIDIA GeForce 6150LE chipset). In AVWizard I set up SPDIF Coax as my playback device which worked just fine... until it booted up. After doing some research on the forums here, I discovered that SPDIF output was muted by default in alsamixer. Unmuting that fixed the issue, however, every time I reboot my core it's muted again and I have to go in and manually unmute it again. Is their a way to fix that so SPDIF is unmuted by default?
It does... at least it tries to unmute everything. Do me a favor... go mute it in alsamixer. Run this as root and see if it unmutes it. I would look at any output.
aplay -l | grep card | awk '{print $2}' | uniq | sed 's/://g' | while read CardNumber; do amixer -c "$CardNumber" | grep '\[off\]' -B5 | grep "Simple" | sed 's/Simple mixer control //g' | grep -vi capture | while read MuteStatus; do amixer -c "$CardNumber" sset "$MuteStatus" unmute; done; amixer -c "$CardNumber" | grep '\[.*\%\]' -B5 | grep "Simple" | sed 's/Simple mixer control //g' | grep -vi capture | while read VolLevel; do amixer -c "$CardNumber" sset "$VolLevel" 80%; done; done