16.04 - External sound card Scarlett 2i2 not playing sound - Ask Ubuntu


i've got first-generation focusrite scarlett 2i2 i'd use sound card on 16.04. following instructions here, installed pulseaudio jack , qjackctl gui. however, when launch gui , check connections, can't see resembles 2i2:

qjackctl screenshot

the 2i2 show when run aplay -l && arecord -l:

    **** list of playback hardware devices ****     card 0: pch [hda intel pch], device 0: alc1150 analog [alc1150 analog]       subdevices: 0/1       subdevice #0: subdevice #0     card 0: pch [hda intel pch], device 1: alc1150 digital [alc1150 digital]       subdevices: 1/1       subdevice #0: subdevice #0     card 2: nvidia_1 [hda nvidia], device 3: hdmi 0 [hdmi 0]       subdevices: 1/1       subdevice #0: subdevice #0     card 2: nvidia_1 [hda nvidia], device 7: hdmi 1 [hdmi 1]      subdevices: 1/1      subdevice #0: subdevice #0    card 2: nvidia_1 [hda nvidia], device 8: hdmi 2 [hdmi 2]      subdevices: 1/1      subdevice #0: subdevice #0    card 2: nvidia_1 [hda nvidia], device 9: hdmi 3 [hdmi 3]      subdevices: 1/1      subdevice #0: subdevice #0    card 3: nvidia [hda nvidia], device 3: hdmi 0 [hdmi 0]      subdevices: 1/1      subdevice #0: subdevice #0    card 3: nvidia [hda nvidia], device 7: hdmi 1 [hdmi 1]      subdevices: 1/1      subdevice #0: subdevice #0    card 3: nvidia [hda nvidia], device 8: hdmi 2 [hdmi 2]      subdevices: 1/1      subdevice #0: subdevice #0    card 3: nvidia [hda nvidia], device 9: hdmi 3 [hdmi 3]      subdevices: 1/1      subdevice #0: subdevice #0    card 4: usb [scarlett 2i2 usb], device 0: usb audio [usb audio]      subdevices: 1/1      subdevice #0: subdevice #0    **** list of capture hardware devices ****    card 0: pch [hda intel pch], device 0: alc1150 analog [alc1150 analog]      subdevices: 0/1      subdevice #0: subdevice #0    card 0: pch [hda intel pch], device 2: alc1150 alt analog [alc1150 alt analog]      subdevices: 1/1      subdevice #0: subdevice #0    card 1: u0x46d0x807 [usb device 0x46d:0x807], device 0: usb audio [usb audio]      subdevices: 1/1      subdevice #0: subdevice #0    card 4: usb [scarlett 2i2 usb], device 0: usb audio [usb audio]      subdevices: 1/1      subdevice #0: subdevice #0

and shows when run lsusb:

    bus 002 device 002: id 8087:8000 intel corp.      bus 002 device 001: id 1d6b:0002 linux foundation 2.0 root hub     bus 001 device 002: id 8087:8008 intel corp.      bus 001 device 001: id 1d6b:0002 linux foundation 2.0 root hub     bus 004 device 001: id 1d6b:0003 linux foundation 3.0 root hub     bus 003 device 002: id 046d:c52b logitech, inc. unifying receiver     bus 003 device 008: id 046d:0807 logitech, inc. webcam b500     bus 003 device 009: id 1235:8016 focusrite-novation      bus 003 device 007: id 2687:fb01       bus 003 device 001: id 1d6b:0002 linux foundation 2.0 root hub

i have logitech webcam , 2 gtx 660 gpus, explain of other devices listed, , don't know if they're interfering ability hook 2i2. i'm not sure go here, seems 2i2 pretty plug-and-play. suggestions?

in qjackctl connections , try connect left side pulseaudio jack sink last "system playback" (right side) 2i2 soundcard:
can be done drag , drop left item desired right item,
or using "connect" or "disconnect" buttons after selecting items.


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