maxheadonl...@gmail.com wrote on 11/24/18 7:45 PM:
Hi all.

I've put enough time into this one where I'm finally willing to reach out for 
some help.  I wanted to see if I could create an AppVm dedicated to music 
creation, using QJackCtl and other open source software.

However, I'm having a terrible time at even getting Jack Audio off of the floor.

System: Base Qubes 4.0 installation, Fedora 28 template, Thinkpad T480 w/32Gb 
RAM.

Expected results: Pressing "Start" on the QJackCtl GUI starts the server, per 
the online manuals and Fedora's Musician documentation.

Actual results: Receive the "Could not connect to JACK server as client. - Overall 
operation failed. - Unable to connect to server." error.

Tried so far: Following online documentation (treating the AppVM as a standard 
Fedora installation), assigning the Audio PCI of the computer to that VM via 
the Qubes Manager.

I'm totally willing to have this be something simple and embarrassing as I 
learn the OS.  Any help that you can provide would be much appreciated!

If I understand Qubes' audio right, Pulseaudio inside AppVMs gets redirected to dom0's Pulseaudio which normally controls the sound hardware. So if you want to override that, maybe try setting up an HVM with the audio device assigned and without Qubes Pulseaudio redirection. Think there's a Qubes package that does it so don't install that one in the HVM.

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