At Wed, 26 May 2010 14:04:27 +0200 (CEST), Jan Engelhardt wrote:
Hi,
I have here a Samsung 320MXn2 monitor/mainboard (typical x86_64 environment) where I cannot get sound output to the internal speakers working.
To start, there seem to be two sound cards:
lspci/lspci -n: 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) 01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller 00:14.2 0403: 1002:4383 01:05.1 0403: 1002:960f
/proc/asound/cards: 0 [SB ]: HDA-Intel - HDA ATI SB HDA ATI SB at 0xf0500000 irq 16 1 [HDMI]: HDA-Intel - HDA ATI HDMI HDA ATI HDMI at 0xf0110000 irq 19
The soundcard responsible for the internal speaker is the 01:05.1/"HDMI" one.
Hmm? HDMI output as the "internal" speaker is abnormal.
Under Windows XP, I see the following mixer elements for it:
- Master Volume
- Wave
- SW Synth
- CD Player
Subsequently, there is sound (once I bump the volumes on these).
There are definitely for the onboard sound, not for HDMI.
However, in Linux up to including 2.6.34, I only see a single mixer element:
- IEC958/S/PDIF
That's correct for HDMI. HDMI has no volume control - it's a digital output.
mplayer etc. all successfully write to the device, but since there are not any further mixer controls, I can't unmute the essential channels.
alsa-utils is version 1.0.21, from openSUSE 11.2 x86_64.
Judging from your description, the problem is likely that the onboard sound device isn't set up properly but only HDMI one. Please give alsa-info.sh output running on your system (run with --no-upload option) for further analysis.
Takashi