Comment 6 for bug 1872187

The "Ubuntu Studio Controls" window is now visible and I can select the Jack Master Device (no USB) "chtrt5646,0,0 playback and capture device".

But I can't start Jack from the Controls-Window. The window freezes.

An attempt with "QjackCtl" shows the following messages:

: Starting jack server...
: JACK server starting in realtime mode with priority 10
: self-connect-mode is "Don't restrict self connect requests"
: Acquired audio card Audio0
: creating alsa driver ... hw:chtrt5645,0,0|hw:chtrt5645,0,0|1024|2|44100|0|0|nomon|swmeter|-|32bit
: configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 2 periods
: ALSA: final selected sample format for capture: 24bit little-endian
: ALSA: use 2 periods for capture
: ALSA: final selected sample format for playback: 24bit little-endian
: ALSA: use 2 periods for playback
: ERROR: JackPosixProcessSync::LockedTimedWait error usec = 5000000 err = Connection timed out
: ERROR: Driver is not running
: ERROR: Cannot open client name = dbusapi
: ERROR: failed to create dbusapi jack client
: ERROR: Unknown request 4294967295
: ERROR: CheckSize error size = 0 Size() = 12
: ERROR: CheckRead error
: ERROR: JackPosixProcessSync::LockedTimedWait error usec = 5000000 err = Connection timed out
: ERROR: Driver is not running
: ERROR: Cannot create new client

I see the "jackdbus" process with "ps -e". But that's a different problem from "JackD", I think.

Sound ist working with ALSA and PulseAudio direct.