21 Apr
2022
21 Apr
'22
11:41 a.m.
Hi all,
On Sun, Apr 17, 2022 at 09:13:50PM -1000, Joel Roth wrote:
Hi Jeanette,
On Mon, Apr 18, 2022, Jeanette C. wrote:
I found a solution in alsa-user mailing list archives
pcm.!default {
type asym
playback.pcm "plughw:CARD=PCH,DEV=7"
}
Thanks for your interest.
--
Joel Roth
Hi Joel,
this is more informed guess work, so take it with a pinch of salt, but it
maybe worth the effort.
First try to create a plug device for your HDMI:
pcm.my_hdmi {
type plug
salve { plughw:CARD=PCH,DEV=3 }
}
Now create your !default with dmix:
pcm.!default {
type dmix
slave { my_hdmi }
}
Perhaps you can even shorten it to putting the
plughw:CARD=PCH,DEV=3
inside the default dmix device.
To review, the following plays through TV speakers:
aplay tmh.wav -D plughw:CARD=PCH,DEV=7
With the .asoundrc below,
aplay tmh.wav
results in:
ALSA lib pcm_direct.c:2079:(snd1_pcm_direct_parse_open_conf) Unique IPC key is not
defined
aplay: main:830: audio open error: Invalid argument
I get this same error even after specifying ipc_key in .asoundrc:
pcm.hdmi_out {
type plug
ipc_key 5641 # inserting this line, and using various values doesn't help
slave { plughw:CARD=PCH,DEV=7 }
}
pcm.!default {
type dmix
slave { pcm "hdmi_out" }
}
I know that getting all this to work with Firefox
and GUI can be cumbersome.
Perhaps pulse might be in the way, but I know much less about Pulse than
ALSA. Still the plughw, which converts samplerates may help.
I believe firefox will honor the !default setting.