I am a Ardour user for 2 years, done some fun stuff, previously everything worked perfectly.
Some time ago, I had to reinstall the whole OS for different reasons.
Now Ardour is working ok for playing, it plays (previously recorded) projects.
But I now have some a serious issue: no input, when connecting a source to some track, from the “capture” channel (either with qjackctl or directly from Ardour).
I think this is mostly a Jack issue/misconfiguration but I have been working on this for several hours, trying out random stuff, and still stuck.
So I shutdown Ardour and focused on Jack.
When Jack is running (started with qjackctl):
- I connect some audio source on my audio interface
- I use the “connect” button from qjackctl to connect “capture” to “playback”
=> no sound coming from monitor
(It used to work with my previous install).
So I tried Audacity separatly, to find come clues:
- when Jack is selected as “host” (preferences->devices): it plays the wave, but nothing gets recorded
- when ALSA is selected as “host”, no sound is produced when playing (although the Audacity embeded monitor show some signal), but recording works!
Tech details: I use at present a different sound card for recording (Swissonic UA-2x2) and for playing (Intel integrated sound card):
$ cat /proc/asound/cards 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xf7120000 irq 128 1 [UA2X2 ]: USB-Audio - UA-2X2 Swissonic UA-2X2 at usb-0000:00:14.0-6, full speed
I tried different settings on the “setup” pane of Qjackctl, but don’t want to mess up things too much…
$ alsamixer, selected my sound card, and checked that capture is not to 0.
Do you think this is an issue with Pulseaudio interfering with Jack?
I read about that, tried the “pasuspender” trick, but no change.
This is really strange, because with my previous OS install, never had such an issue, it just…worked.
What can I try next?
Thanks for your help.