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Old 07-21-2014, 08:33 AM   #1
[ITA]freeware
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Registered: Jul 2004
Distribution: Debian jessie
Posts: 75

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alsa default control device (besides: alsa howitworks)


hallo guys,

i am stuck on a stupid problem: i am trying to guess what 'card' and 'device' actually mean for alsa, because i have observed a weird behaviour. Looking into /usr/share/alsa/alsa.conf i can see:

Code:
defaults.ctl.card 0
defaults.pcm.card 0
defaults.pcm.device 0
and

Code:
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC663 Analog [ALC663 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC663 Digital [ALC663 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
so i guess my alsamixer should control the Intel card, in particular the ACL663 device.

actually alsamixer reports as 'chip' the HDMI device.

now, considering that i believe that 'card' means the bus from analog plugs and speakers to the chipset, and that my card equips 3 different chipsets (?), why alsamixer keeps managing HDMI stuff, while alsa is actually configured to set ctl to the ACL663 analog output?

thank you


p.s. i forgot before some latest jessie official updates, alsamixer correctly reported ACL663 analog as managed device..

Last edited by [ITA]freeware; 07-21-2014 at 08:34 AM.
 
  


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