On Mon, Jan 21, 2013 at 3:18 AM, Takashi Iwai tiwai@suse.de wrote:
At Sun, 20 Jan 2013 14:54:39 -0500, Miro Hodak wrote:
Not always, most labels are one word long and can be open to different interpretations. In alsamixer, ordering of capture controls is the following:
Master Headphon PCM Front Front Mi Surround Center LFE Side Line Boo S/PDIF S/PDIF D Auto-Mut Independ <Rear Mic>
and thus "Front" is next to "Front Mi" - that should connect at the
front I
assume - rather then to other outputs at the back. Thus it is very easy
to
get confused.
I see. Yes, the usage of the word "front" has been a problem since long time ago, basically because it can mean two different things: the position of the jack and the channel location. But, this has been so, thus it's no regression to fix urgently.
Here are outputs as specified in my MB manual and my attempt to pair them to items in alsamixer (Capture only):
MB description Alsa control (capture) BACK PORTS: Line In Line Boost (its boost only, I know) Front Speaker Out Front Mic In Rear Mic Boost Center/Subwoofer Center Rear Speaker Out ??? Side Speaker Out Side
FRONT PORTS: Headphone Out Headphone Front Mic In Front Mic Boost
There are two items that have not been assigned - Surround and LFE, presumably one of them should correspond to the "Rear Speaker Out" for which I could not identify ALSA control. Not being familiar with more
than
2-channle audio, I do not know how to assign these.
"Surround" corresponds to the rear channel in ALSA term. "LFE" is a more official name of subwoofer.
Takashi
Thanks for that explanation.
I have been playing with Independent HP feature and while I can get it to work in aplay and mplayer, it does not seem to work on vlc and Skype. Both applications seem to have options for sending sound to HPs ("AD1989B Analog Front Speakers" or "AD1989B Analog (hw: 0,2)" - Skype only), but none of those options sends sound to the HPs. Any thoughts on this?