On Mon, Nov 17, 2014 at 7:35 PM, Daiajo Tibdixious <[email protected]> wrote: > 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? >
First, have you reviewed the Alsa documentation specifically for setting the order of multiple cards? Without setting the order specifically I can tell you that at times Alsa will change the order on you. (kernel updates, Alsa updates) I have one machine with 3 cards, sync'ed using external digital clocks. It's critical to inform Alsa as to the order I want them to appear. http://alsa.opensrc.org/MultipleCards After you've done that and verified it is setup then it's important to make sure that you've enabled both your master volume as well as PCM levels in either Alsamixer or your desktop mixer. Also, make sure you set the options for saving and restarting in /etc/conf.d/alsasound. HTH, Mark
