Had gentoo linux for years. Original system had working sound, which
gradually petered out (working in some apps and not others) until no
sound at all.
Got a new system, a few months old, set it up according to the ALSA
guilde (wiki.gentoo.org/wiki/ALSA) but no sound.
Physically removed the speakers, plugged into laptop, works fine.
Put back in desktop (linux) and no sound.
linux # lsof /dev/snd/pcmC1D3p
linux # speaker-test -t wav -c 2
speaker-test 1.0.27.2
Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 2048 to 8192
Period size range from 1024 to 1024
Using max buffer size 8192
Periods = 4
was set period_size = 1024
was set buffer_size = 8192
0 - Front Left
1 - Front Right
--
I got the sound device from lsof | grep snd with a java app running
which locks the sound device. Did the above with it shut down.
alsamixer shows 2 cards, 1 HDMI, so I presume I got the right 1.
The speaker cable is green so I plugged in the middle green hole
(which also says "line out"). Also tried the other ones ("line in" and
mic symbol).
There are no other audio slots anywhere so I think is a software problem.
alsamixer calls the card "HDA AIT SB:" chip "Realtek ALC887-VD"
I have PCI/Intel HD Audio/Realtek enabled (plus many others in that group).
I'm doing all this testing from root.
I've tried everything I can think of, what next?
