wget http://jackaudio.org/downloads/adevices.sh && bash ./adevices.sh
--2015-07-03 13:25:11--  http://jackaudio.org/downloads/adevices.sh
Resolving jackaudio.org (jackaudio.org)... 69.163.240.153
Connecting to jackaudio.org (jackaudio.org)|69.163.240.153|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2249 (2.2K) [application/x-sh]
Saving to: ‘adevices.sh.1’

adevices.sh.1       100%[=====================>]   2.20K  --.-KB/s   in 0s

2015-07-03 13:25:12 (4.69 MB/s) - ‘adevices.sh.1’ saved [2249/2249]

========================================
Part I: ALSA
Advanced Linux Sound Architecture Driver Version k3.19.0-21-lowlatency.

Card 0 (PCH):
  * Playback Device 0 (ALC280 Analog):
    - Subdevice 0 (hw:PCH,0,0):
      used by: pulseaudio (PID 1442)
      access: MMAP_INTERLEAVED
      format: S16_LE
      subformat: STD
      channels: 2
      rate: 44100 (44100/1)
      period_size: 8192
      buffer_size: 16384

  * Playback Device 3 (HDMI 0):
    - Subdevice 0 (hw:PCH,3,0):
      closed

  * Recording Device 0 (ALC280 Analog):
    - Subdevice 0 (hw:PCH,0,0):
      closed

Card 1 (Loopback):
  * Playback Device 0 (Loopback PCM):
    - Subdevice 0 (hw:Loopback,0,0):
      closed

    - Subdevice 1 (hw:Loopback,0,1):
      closed

    - Subdevice 2 (hw:Loopback,0,2):
      closed

    - Subdevice 3 (hw:Loopback,0,3):
      closed

    - Subdevice 4 (hw:Loopback,0,4):
      closed

    - Subdevice 5 (hw:Loopback,0,5):
      closed

    - Subdevice 6 (hw:Loopback,0,6):
      closed

    - Subdevice 7 (hw:Loopback,0,7):
      closed

  * Playback Device 1 (Loopback PCM):
    - Subdevice 0 (hw:Loopback,1,0):
      closed

    - Subdevice 1 (hw:Loopback,1,1):
      closed

    - Subdevice 2 (hw:Loopback,1,2):
      closed

    - Subdevice 3 (hw:Loopback,1,3):
      closed

    - Subdevice 4 (hw:Loopback,1,4):
      closed

    - Subdevice 5 (hw:Loopback,1,5):
      closed

    - Subdevice 6 (hw:Loopback,1,6):
      closed

    - Subdevice 7 (hw:Loopback,1,7):
      closed

  * Recording Device 0 (Loopback PCM):
    - Subdevice 0 (hw:Loopback,0,0):
      closed

    - Subdevice 1 (hw:Loopback,0,1):
      closed

    - Subdevice 2 (hw:Loopback,0,2):
      closed

    - Subdevice 3 (hw:Loopback,0,3):
      closed

    - Subdevice 4 (hw:Loopback,0,4):
      closed

    - Subdevice 5 (hw:Loopback,0,5):
      closed

    - Subdevice 6 (hw:Loopback,0,6):
      closed

    - Subdevice 7 (hw:Loopback,0,7):
      closed

  * Recording Device 1 (Loopback PCM):
    - Subdevice 0 (hw:Loopback,1,0):
      closed

    - Subdevice 1 (hw:Loopback,1,1):
      closed

    - Subdevice 2 (hw:Loopback,1,2):
      closed

    - Subdevice 3 (hw:Loopback,1,3):
      closed

    - Subdevice 4 (hw:Loopback,1,4):
      closed

    - Subdevice 5 (hw:Loopback,1,5):
      closed

    - Subdevice 6 (hw:Loopback,1,6):
      closed

    - Subdevice 7 (hw:Loopback,1,7):
      closed

Card 2 (Plus):
  * Playback Device 0 (USB Audio):
    - Subdevice 0 (hw:Plus,0,0):
      used by: jackdbus (PID 2537)
      access: MMAP_INTERLEAVED
      format: S32_LE
      subformat: STD
      channels: 2
      rate: 44100 (44100/1)
      period_size: 1024
      buffer_size: 3072

  * Recording Device 0 (USB Audio):
    - Subdevice 0 (hw:Plus,0,0):
      used by: jackdbus (PID 2537)
      access: MMAP_INTERLEAVED
      format: S32_LE
      subformat: STD
      channels: 2
      rate: 44100 (44100/1)
      period_size: 1024
      buffer_size: 3072

========================================
Part II: jack processes
 2528 pts/2    SLl+   0:02 qjackctl
 2537 ?        SLsl   0:02 /usr/bin/jackdbus auto
========================================
Part III: jack-dbus config
--- status
started
--- get selected driver
alsa
--- get driver parameters (type:isset:default:value)
              device: ALSA device name (str:set:hw:0:hw:Plus)
             capture: Provide capture ports.  Optionally set device (str:set:none:hw:Plus)
            playback: Provide playback ports.  Optionally set device (str:set:none:hw:Plus)
                rate: Sample rate (uint:set:48000:44100)
              period: Frames per period (uint:set:1024:1024)
            nperiods: Number of periods of playback latency (uint:set:2:3)
               hwmon: Hardware monitoring, if available (bool:set:False:False)
             hwmeter: Hardware metering, if available (bool:set:False:False)
              duplex: Provide both capture and playback ports (bool:set:True:True)
            softmode: Soft-mode, no xrun handling (bool:set:False:False)
             monitor: Provide monitor ports for the output (bool:set:False:False)
              dither: Dithering mode (char:set:n:n)
          inchannels: Number of capture channels (defaults to hardware max) (uint:notset:0:0)
         outchannels: Number of playback channels (defaults to hardware max) (uint:notset:0:0)
              shorts: Try 16-bit samples before 32-bit (bool:set:False:False)
       input-latency: Extra input latency (frames) (uint:notset:0:0)
      output-latency: Extra output latency (frames) (uint:notset:0:0)
         midi-driver: ALSA MIDI driver (str:notset:none:none)
            hw-alias: Use hardware device name for alias instead of alsa_pcm (bool:notset:False:False)
--- get engine parameters (type:isset:default:value)
              driver: Driver to use (str:set:dummy:alsa)
                name: Server name to use. (str:notset:default:default)
            realtime: Whether to use realtime mode. (bool:set:True:True)
   realtime-priority: Scheduler priority when running in realtime mode. (sint:notset:10:10)
           temporary: Exit once all clients have closed their connections. (bool:notset:False:False)
             verbose: Verbose mode. (bool:set:False:False)
      client-timeout: Client timeout limit in milliseconds. (sint:set:0:500)
        clock-source: Clocksource type : c(ycle) | h(pet) | s(ystem). (uint:notset:0:0)
            port-max: Maximum number of ports. (uint:notset:2048:2048)
    replace-registry: Replace shared memory registry. (bool:notset:False:False)
                sync: Use server synchronous mode. (bool:notset:False:False)
   self-connect-mode: Self connect mode. (char:notset: : )
       slave-drivers: Slave drivers to use (str:notset::)
               alias: Show port aliases (bool:notset:False:False)