Below is the full output from the message window in Jack Audio Connection Kit (qjackctl). In the Jack Audio Connection Kit (qjackctl), open the Setup window, and the Interface will be set to hw:Intel. Change the Interface to (default). Then, you should be able to start JACK.

16:07:30.953 D-BUS: JACK server could not be started. Sorry Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started Thu Jan 29 16:07:30 2015: Starting jack server... Thu Jan 29 16:07:30 2015: JACK server starting in realtime mode with priority 10 Thu Jan 29 16:07:30 2015: ERROR: control open "hw:Intel" (No such device) Thu Jan 29 16:07:30 2015: ERROR: control open "hw:Intel" (No such device) Thu Jan 29 16:07:30 2015: creating alsa driver ... -|hw:Intel,2|1024|3|44100|0|0|nomon|swmeter|-|32bit Thu Jan 29 16:07:30 2015: ERROR: control open "hw:Intel" (No such device) Thu Jan 29 16:07:30 2015: ERROR: ALSA: Cannot open PCM device alsa_pcm for capture. Falling back to playback-only mode Thu Jan 29 16:07:30 2015: ERROR: Cannot initialize driver Thu Jan 29 16:07:30 2015: ERROR: JackServer::Open failed with -1 Thu Jan 29 16:07:30 2015: ERROR: Failed to open server Thu Jan 29 16:07:32 2015: Saving settings to "/home/jeremy/.config/jack/conf.xml" ... 16:07:40.837 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info. Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started (qjackctl:2464): Gtk-CRITICAL **: IA__gtk_widget_get_direction: assertion 'GTK_IS_WIDGET (widget)' failed (qjackctl:2464): Gtk-CRITICAL **: IA__gtk_widget_get_direction: assertion 'GTK_IS_WIDGET (widget)' failed