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Kate Monster
Apprentice
Joined: 13 Jun 2006
Posts: 221
Location: Clarkston, Michigan
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 Posted: Tue Feb 21, 2012 8:51 pm Post subject: Misbehaving ALSA |
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| I don't know if ALSA just sucks, or if it's just me. It seems whenever it finds a new device, it switches to it and uses it as the default device for everything. Perfect example, I plugged in a webcam, which has no sound output channels at all, and it immediately switched to it as the default device. I already changed stuff in my .asoundrc to make the default card 1(my Intel card), but that worked until I plugged this webcam in. Basically what I'm asking is, how can I keep ALSA from switching the default device every time I plug an audio device in? |
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Gusar
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Joined: 09 Apr 2005
Posts: 2557
Location: Slovenia
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| Posted: Tue Feb 21, 2012 9:09 pm Post subject: |
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The default card is 0.
This should be solved by a simple /etc/modprobe.d/alsa.conf | Code: | options snd_hda_intel index=0
options snd_usb_audio index=1 |
Keyword "should". But something in this direction is the solution. Unless you also have some other stuff meddling with things, like Pulseaudio. |
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Kate Monster
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Joined: 13 Jun 2006
Posts: 221
Location: Clarkston, Michigan
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| Posted: Wed Feb 22, 2012 5:27 am Post subject: |
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| I do use KDE and its sound system, that's it though. I tried setting a new default card in my .asoundrc, but firefox/chrome ignored it. Mind you, sound worked fine in every other program except those two. They seem to go in order and pick the first card it sees, if available. |
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hedmo
l33t
Joined: 29 Aug 2009
Posts: 829
Location: halmstad
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| Posted: Wed Feb 22, 2012 6:06 am Post subject: |
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Kate Monster
i have quite the same.alsa dont like my r600 audio card.i set :
cat /etc/asound.conf
pcm.!default {
type hw
card 1
device 3
}
aplay -l
card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0 |
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Gusar
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Joined: 09 Apr 2005
Posts: 2557
Location: Slovenia
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| Posted: Wed Feb 22, 2012 9:33 am Post subject: |
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| Kate Monster wrote: | | They seem to go in order and pick the first card it sees, if available. |
They use the alsa "default" device. The one at index 0. Though maybe the KDE sound system messed with that. But as I don't use it, I have no idea what KDE could be doing. |
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aCOSwt
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Joined: 19 Oct 2007
Posts: 2041
Location: Between the keyboard and the chair
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| Posted: Wed Feb 22, 2012 11:11 am Post subject: |
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| Kate Monster wrote: | | I do use KDE and its sound system |
Alsa is not in cause here.
In addition to this, you should not be obliged to fix the indexes as Gusar suggests.
If you are using phonon vlc backend, then it appears more and more broken on systems with multiple audio devices.
https://bugs.gentoo.org/show_bug.cgi?id=402151
I am personally still using the no-longer-supported-but-perfectly-working xine backend because of this.
_________________
In theory there are no differences between theory and practice. In practice, there are.
Don't try to understand my posts. Immanuel Kant never did, he thinks that only music and laughter do not have to mean anything. |
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Kate Monster
Apprentice
Joined: 13 Jun 2006
Posts: 221
Location: Clarkston, Michigan
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| Posted: Thu Apr 05, 2012 4:02 am Post subject: |
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Hiya.
I don't believe KDE has anything to do with this. Firefox and Chrome exhibit the same behavior in Fluxbox. They attempt to use device 0 no matter what. I think the true issue at heart is, why is ALSA allowing a device with no sound output channels to be device 0? Surely this deserves a bug report, but perhaps I am misunderstanding something.
Also, I must not have seen Gusar's advice in the beginning of the thread with the "option" lines. I added those. TIA. |
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PaulBredbury
Watchman
Joined: 14 Jul 2005
Posts: 7022
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| Posted: Thu Apr 05, 2012 4:40 am Post subject: |
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| Kate Monster wrote: | | Firefox and Chrome exhibit the same behavior |
Outputting what? Don't you mean Adobe Flash? That outputs to ALSA's "default" PCM (that's its actual name), which is pretty reasonable.
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Improve your font rendering and ALSA sound |
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