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naga jolokia
n00b
Joined: 28 Dec 2013
Posts: 10
Location: Berlin
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 Posted: Wed Mar 04, 2015 3:46 pm Post subject: How to set the default sound card |
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Following Gentoo's alsa wiki an ~/.asoundrc | Code: | defaults.pcm.!card PCH
defaults.pcm.!device 0 |
helped mpg123 to use the right sound card. But alsamixer fails, it still tries HDMI. OK, I can change it by hand using F6, but not all programs have this option (f.e. flashplayer). So I tried to change the order of the cards. | Code: | # cat /proc/asound/cards
0 [HDMI ]: HDA-Intel - HDA Intel HDMI
HDA Intel HDMI at 0xf7c34000 irq 30
1 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf7c30000 irq 31
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according to the wiki in /etc/modprobe.d/alsa.conf one should set options snd cards_limit=2 and add 2 lines | Code: | options snd-hda-intel id=PCH index=0
options snd-hda-intel id=HDMI index=1 |
The comments in that file tell me to run 'update-modules' but as it seems no longer available I rebooted in the hope that the moduls will get their config during loading process. But the order in /proc/asound/cards is untouched. So my questions are: Is the file read when modules get loaded? Or is there another way to set the default sound card (prefered: system wide)?
P.S.: I also tried enabling the alias snd-card-[01] snd-hda-intel lines without success |
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lagalopex
Guru
Joined: 16 Oct 2004
Posts: 562
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| Posted: Wed Mar 04, 2015 5:58 pm Post subject: |
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With the "defaults.pcm" you only set the playback default. You also need to set the control ("defaults.ctl") to the other card.
OR
For the module options:
| Code: | | options snd-hda-intel id=PCH,HDMI index=0,1 |
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naga jolokia
n00b
Joined: 28 Dec 2013
Posts: 10
Location: Berlin
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| Posted: Thu Mar 05, 2015 10:55 am Post subject: |
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| lagalopex wrote: | With the "defaults.pcm" you only set the playback default. You also need to set the control ("defaults.ctl") to the other card.
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OK, that works. Should be documented in the Wiki.
| lagalopex wrote: |
OR
For the module options:
| Code: | | options snd-hda-intel id=PCH,HDMI index=0,1 |
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That does change the order in /proc/asound/cards, but alsamixer still defaults to HDMI.
Meanwhile I found an option in UEFI to disable HDMI audio completely. That did the job!
Seems there is a Patch
[url]https://groups.google.com/forum/#!topic/linux-sunxi/oGa0L2T0jiY[/url]
for ARM boards which accept kernel command line options hdmi.audio=EDID:0 to disable audio if not supported by the attached screen and without the EDID part to disable HDMI audio completely, but it doesn't seem to be included in X86_64. This options on my commandline were ignored. |
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