Re: [alsa-devel] Intel HDA / ALC662 analog surround problem
I'm using alsa 1.0.28 (lib and utils). Everything works fine so far, i.e.
stereo output through speakers and headphone as well as S/PDIF and all possible capturing.
According to my mainboard manual, the codec supports 5.1 (analog)
surround by using the rear "line out" jack (for rear surround) and "mic" jack (for center and sub) - which doesn't work. (I don't have even a clue what to do to activate.)
My questions:
- Does 5.1 analog surround work for the ALC662? If yes, how?
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/plain/Documenta...
Channel Mode This is an enum control to change the surround-channel setup, appears only when the surround channels are available. It gives the number of channels to be used, "2ch", "4ch", "6ch", and "8ch". According to the configuration, this also controls the jack-retasking of multi-I/O jacks.
- If not, is it a limitation of the kernel oder alsa?
HDA-Intel.conf says:
HDA-Intel.pcm.surround51.0 cards.HDA-Intel.pcm.front.0
Does this mean that 5.1 surround is restricted to stereo in any case?
This mean softvol plugin is also used by 5.1 and stereo
Do "pcm playback volume" affect the volume after you change channel mode from 2ch to 6 ch so that mic and line in jacks are retasked as output ?
Raymond Yau wrote on Sat, 21 Feb 2015 23:56:30 +0800:
- Does 5.1 analog surround work for the ALC662? If yes, how?
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/plain/Documenta... Channel Mode [...]
I know this document and while I do have the auto-mute control a channel control is missing.
So, is the ALC662 supposed to have a channel control? (Maybe I'm missing a kernel configuration for it, or what else could affect it?)
Do "pcm playback volume" affect the volume after you change channel mode from 2ch to 6 ch so that mic and line in jacks are retasked as output ?
I can't answer, because of the lack of channel mode.
Any further help is appreciated.
Ingo
- Does 5.1 analog surround work for the ALC662? If yes, how?
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/plain/Documenta...
Channel Mode [...]
I know this document and while I do have the auto-mute control a channel control is missing.
So, is the ALC662 supposed to have a channel control? (Maybe I'm missing a kernel configuration for it, or what else could affect it?)
You have to post the output of alsa-info.sh
The channel mode should be automatically added for those desktop with three audio jacks (green line out, blue line in and pink mic) at rear panel
http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/plain/Documentat...
either your computer BIOS does not set the correct pin default or it can be disabled by hint
- multi_io (bool): try probing multi-I/O config (e.g. shared line-in/surround, mic/clfe jacks)
Do "pcm playback volume" affect the volume after you change channel mode from 2ch to 6 ch so that mic and line in jacks are retasked as output ?
I can't answer, because of the lack of channel mode.
Any further help is appreciated.
participants (2)
-
Ingo Brückl -
Raymond Yau