| 1 |
On Mon, Nov 17, 2014 at 7:35 PM, Daiajo Tibdixious <daiajo@×××××.com> wrote: |
| 2 |
> Had gentoo linux for years. Original system had working sound, which |
| 3 |
> gradually petered out (working in some apps and not others) until no |
| 4 |
> sound at all. |
| 5 |
> |
| 6 |
> Got a new system, a few months old, set it up according to the ALSA |
| 7 |
> guilde (wiki.gentoo.org/wiki/ALSA) but no sound. |
| 8 |
> |
| 9 |
> Physically removed the speakers, plugged into laptop, works fine. |
| 10 |
> Put back in desktop (linux) and no sound. |
| 11 |
> |
| 12 |
> linux # lsof /dev/snd/pcmC1D3p |
| 13 |
> linux # speaker-test -t wav -c 2 |
| 14 |
> |
| 15 |
> speaker-test 1.0.27.2 |
| 16 |
> |
| 17 |
> Playback device is default |
| 18 |
> Stream parameters are 48000Hz, S16_LE, 2 channels |
| 19 |
> WAV file(s) |
| 20 |
> Rate set to 48000Hz (requested 48000Hz) |
| 21 |
> Buffer size range from 2048 to 8192 |
| 22 |
> Period size range from 1024 to 1024 |
| 23 |
> Using max buffer size 8192 |
| 24 |
> Periods = 4 |
| 25 |
> was set period_size = 1024 |
| 26 |
> was set buffer_size = 8192 |
| 27 |
> 0 - Front Left |
| 28 |
> 1 - Front Right |
| 29 |
> -- |
| 30 |
> I got the sound device from lsof | grep snd with a java app running |
| 31 |
> which locks the sound device. Did the above with it shut down. |
| 32 |
> |
| 33 |
> alsamixer shows 2 cards, 1 HDMI, so I presume I got the right 1. |
| 34 |
> The speaker cable is green so I plugged in the middle green hole |
| 35 |
> (which also says "line out"). Also tried the other ones ("line in" and |
| 36 |
> mic symbol). |
| 37 |
> |
| 38 |
> There are no other audio slots anywhere so I think is a software problem. |
| 39 |
> |
| 40 |
> alsamixer calls the card "HDA AIT SB:" chip "Realtek ALC887-VD" |
| 41 |
> I have PCI/Intel HD Audio/Realtek enabled (plus many others in that group). |
| 42 |
> |
| 43 |
> I'm doing all this testing from root. |
| 44 |
> |
| 45 |
> I've tried everything I can think of, what next? |
| 46 |
> |
| 47 |
|
| 48 |
First, have you reviewed the Alsa documentation specifically for |
| 49 |
setting the order of multiple cards? Without setting the order |
| 50 |
specifically I can tell you that at times Alsa will change the order |
| 51 |
on you. (kernel updates, Alsa updates) I have one machine with 3 |
| 52 |
cards, sync'ed using external digital clocks. It's critical to inform |
| 53 |
Alsa as to the order I want them to appear. |
| 54 |
|
| 55 |
http://alsa.opensrc.org/MultipleCards |
| 56 |
|
| 57 |
After you've done that and verified it is setup then it's important to |
| 58 |
make sure that you've enabled both your master volume as well as PCM |
| 59 |
levels in either Alsamixer or your desktop mixer. |
| 60 |
|
| 61 |
Also, make sure you set the options for saving and restarting in |
| 62 |
/etc/conf.d/alsasound. |
| 63 |
|
| 64 |
HTH, |
| 65 |
Mark |
Archives