Things got a little better since I added "probe_mask=8" to the snd-hda-intel module options:
options snd-hda-intel enable_msi=0 bdl_pos_adj=0x00ff probe_mask=8
Now "cat /proc/asound/card0/eld#3.0 gives me:
eld_version [0x2] CEA-861D or below
edid_version [0x3] CEA-861-B, C or D
speakers [0x1] FL/FR
sad0_coding_type [0x1] LPCM
sad0_rates [0xe0] 44100 48000 88200
sad0_bits [0x20000] 16
But still no sound
I ran "alsamixer -c 0" and made sure outputs were not muted.
But "speaker-test -D hw:0,3
" and "aplay -D hw:0,3 file.wav
" give no sound.
(also tried "aplay -D hdmi:0,0 file.wav
aplay -D hw:0,3 /usr/share/sounds/KDE-Im-Phone-Ring.wav
Playing WAVE '/usr/share/sounds/KDE-Im-Phone-Ring.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
aplay: pcm_write:1682: write error: Error de entrada/salida
Attached new nvidia-bug-report.log.gz.