No sound in alsa

Question

I have no sound using alsa.
cat /procs/asound/cards outputs:
0 [HDMI ]: HDA-Intel - HDA Intel HDMI
HDA Intel HDMI at 0xf7c14000 irq 34
1 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf7c10000 irq 35
The volume in alsamixer is set '00' and in green color. Volume level is set to 100.
Last edited by toni (2014-11-22 17:09:26)

Answer 1

MoonSwan wrote:
Damnit somehow my config file I posted failed to show up!  Here it is (again) and it should show you the syntax you're trying to duplicate by putting each "soundcard" on a separate line.  See this code for an example configuration:
#/etc/modprobe.d/alsa-base.conf
options snd slots=snd_ctxfi,snd_hda_intel
options snd_ctxfi index=0
options snd_hda_intel index=-2
I think what the kernel is seeing is the same soundcard that's registering different outputs.  One is an analog device, e.g. card 0: PCH [HDA Intel PCH], device 0: ALC284 Analog [ALC284 Analog].  The other is an HDMI device that's used when you plug in HDMI cables and a suitable output such as a stero amp, e.g. card 1: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
If I'm right you'll want to follow these instructions that I've cut/pasted from the Arch wiki Alsa page that I posted earlier:
When loading modules that are used by multiple cards (for example snd-hda-intel) it is recommended to include vendor and product identifications into options. To get vid and pid use:
$ lspci -nn | grep -i audio
00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) [1002:4383] (rev 40)
01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] RV770 HDMI Audio [Radeon HD 4850/4870] [1002:aa30]
07:05.0 Multimedia audio controller [0401]: VIA Technologies Inc. VT1720/24 [Envy24PT/HT] PCI Multi-Channel Audio Controller [1412:1724] (rev 01)
Last numbers in square brackets are [vid:pid], so for the above example, for setting Azalia as default card following is correct:
/etc/modprobe.d/alsa-base.conf
# SB [HDA ATI SB]
options snd-hda-intel index=0 model=auto vid=1002 pid=4383
# HDMI [HDA ATI HDMI]
options snd-hda-intel index=1 model=auto vid=1002 pid=aa30
# HiFi [Audiotrak Prodigy 7.1 HiFi]
options snd-ice1724 index=2 model=prodigy71hifi vid=1412 pid=1724
Tip: To list vendor and product IDs of USB sound cards, use the lsusb command instead of lspci.
Basically you want Alsa to "see" each iteration of the same soundcard as a separate "device," in this case the analog and digital modes of one soundcard.  The instructions I pasted here should help you sort this out but if not post again and I'll do my best to help you where I can.
Finally, I have solved it by creating file /etc/modprobe.d/alsa-base.conf which content is:
# Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller [8086:0c0c] (rev 06)
options snd_hda_intel index=1 model=auto vid=8086 pid=0c0c
# Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller [8086:8c20] (rev 04)
options snd_hda_intel index=0 model=auto vid=8086 pid=8c20
The problem was the order in which they were initialized at boot time. It was not taking into account the correct one.
Last edited by toni (2014-11-17 20:22:50)