ok, after some more testing I have understood the problem! It seems that Jack does not recognize the audio card of my PC. In the Setup window of QJackCtl I select duplex, and I can see the interfaces of both the POD and the built-in audio card. Thus I select the POD as input and the audio card as output device. However, when I open the Connection window, the built-in card does not show up. In the audio tab I can only see the menu for ardour and a menu "system" that refers to the POD (yes, I am sure...if I disconnect the system output to the system input I cannot hear sound from the headphones attached to the POD, and if I disconnect system out to ardour input, ardour does not get the guitar signal).
Any help would be highly appreciated! Thanks Cristiano On 05/28/2014 08:22 PM, Cristiano Alessandro wrote: > Hi Stefan, > > thanks for your reply. > I have followed your suggestions and everything seems to be running. I > can start the Jack server, and I can even define different audio cards > for input and output. It works! > > However nothing comes out of the speakers. I have checked Alsa mixer > and all the lines are in maximum volume. I am sure that the signals > arrives to the PC, because I can record in Ardour and I can see the > waveform, but I cannot hear anything. Not even if I play the track > recorded in Ardour. > Any idea? > > Thanks > Cristiano > > > > On 05/28/2014 10:42 AM, Stefan Hajnoczi wrote: >> On Wed, May 28, 2014 at 9:47 AM, Cristiano Alessandro >> <[email protected]> wrote: >> >> Great, the driver is working and the sound card is available. >> >> First, launch pavucontrol and disable the HD300 in the Configuration >> tab. This ensures that PulseAudio will not interfere while JACK is >> using the device. >> >> If you wish to hear the guitar on your PC speakers, also disable your >> PC sound card in pavucontrol. >> >> Now launch qjackctl. If you want to use the HD300 for playback and >> capture, select HD300 as the Interface and make sure Audio is Duplex. >> Set Frames/Period to 128, Sample Rate to 48000, and Periods/Buffer to >> 2. Now click click Start to launch the JACK daemon. This is the >> configuration that I use. >> >> But it sounds like you want to use the HD300 as the capture (in) >> device and your PC soundcard as the playback (out) device. In that >> case you need select the Input Device and Output Device separately. >> I'm not sure how great JACK is at using two different sound devices - >> the reason is that they have independent sampling clocks which will >> drift apart over time. >> >> In my setup where everything goes through the HD300 I connect either >> headphones to the HD300's headphone socket or a PA speaker to the >> HD300's L/Mono socket. >> >> Hope this helps, >> Stefan > ------------------------------------------------------------------------------ Time is money. Stop wasting it! Get your web API in 5 minutes. www.restlet.com/download http://p.sf.net/sfu/restlet _______________________________________________ Line6linux-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/line6linux-user
