[NOTE: Apologies for the paste, but for some reason the answer got
deleted from askubuntu (This post is hidden. It was deleted 12 hours ago
by fossfreedom♦. ...so much for "freedom" ; ) If someone can tell me
why, I would appreciate it. I gave the answer (Rodecaster appears not to
be supported) and showed a lot of debugging effort leading to that
conclusion.]
I have the same issue... I tried many things, but could not get the
Rodecaster working. I did learn quite a bit and got the Scarlett 2i2
working though.
- lsusb
Bus 001 Device 002: ID 19f7:0011 RODE Microphones RODECaster Pro
- ls -al /dev/snd/by-id/
lrwxrwxrwx 1 root root 12 May 6 11:44
usb-RODE_Microphones_RODECaster_Pro_00000000001A-01 -> ../controlC2
- cat /proc/asound/cards
2 [Pro ]: USB-Audio - RODECaster Pro
RODE Microphones RODECaster Pro at usb-0000:01:00.0-3, high speed
- cat /proc/asound/modules
0 snd_usb_audio
1 snd_hda_intel
- lsmod | grep snd_usb_audio looks OK
- arecord --list-devices does not show it
- aplay -L shows usbstream:CARD=Generic HD-Audio Generic USB Stream
Output and a lot of other (normal motherboard) devices but nothing with Rode
and nothing else USB
- aplay --device=usbstream
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for
card
aplay: main:828: audio open error: Invalid argument
- cat /proc/asound/pcm does not show it
- editing /etc/modprobe.d/alsa-base.conf to add these two lines at the end:
options snd-usb-audio index=0
options snd-hda-intel index=1 ...but no change after a reboot. Idea from
https://unix.stackexchange.com/questions/220224/alsa-not-detecting-my-soundcard
- editing /etc/modprobe.d/alsa-base.conf to add options snd
slots=snd-usb-audio,snd-hda-intel did not change anything either
- blacklisting snd_hda_intel in /etc/modprobe.d/blacklist-sound.conf by
adding blacklist snd_hda_intel to that file (create it if necessary) and
rebooting disabled it, but did not help with the USB sound for the Rodecaster
- pulseaudio -k && sudo alsa force-reload after the changes (instead of a
reboot) doesn't change anything either. Note: pulseaudio restarts itself and
does not need to be manually restarted (Is there another way to restart the
sound system if pulseaudio/ALSA don't work?)
The Answer (as it appears to me at least):
- The Rodecaster is recognized as a USB device, but somehow not recognized by
Alsa
- I grabbed a Scarlett 2i2 gen3
(https://wiki.linuxaudio.org/wiki/hardware_support)
- edited /etc/modprobe.d/alsa-base.conf to comment out #options snd-usb-audio
index=-2 to allow snd-usb-audio to be the first device
- edited /etc/modprobe.d/alsa-base.conf to add options snd
slots=snd-usb-audio,snd-hda-intel at the end to have the USB audio before the
HDA Intel
- pulseaudio -k && sudo alsa force-reload to reload the alsa config
Then the Scarlett showed up. Leaving the HDA Intel first did not let the
Scarlett show up.
Helpful info:
- https://www.alsa-project.org/main/index.php/Help_To_Debug ...the
alsa-info.sh looks like a fairly complete alsa debugging info summary generator
- https://wiki.ubuntu.com/DebuggingSoundProblems
- bug filed:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1877726
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1877726
Title:
[HDA-Intel - HD-Audio Generic, playback] USB sound with Rodecaster Pro
not working
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1877726/+subscriptions
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