Hey all-
I had qjackctl working at one point, but it has mysteriously stopped.

All I want to do (so far) is pipe microphone -> headphones through jackd.

I know my mic and headphones are working correctly, as I can do
Code:
arecord -D hw:1,0 -f S32_LE | aplay
and it works like a charm.

In qjackctl, I set the input device to hw:1,0 and connect system->system in the connections window, but all I hear is static.

Here is the full output in qjackctl:
12:23:15.585 Patchbay deactivated.
12:23:15.590 Statistics reset.
12:23:15.591 ALSA connection change.
12:23:15.606 D-BUS: Service is available (org.jackaudio.service aka jackdbus).
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
12:23:18.880 D-BUS: JACK server is starting...
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
12:23:18.902 D-BUS: JACK server was started (org.jackaudio.service aka jackdbus).
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: driver "alsa" selected
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Saving settings to "/home/tom/.config/jack/conf.xml" ...
Wed Aug 15 12:23:18 2012: Starting jack server...
Wed Aug 15 12:23:18 2012: JACK server starting in realtime mode with priority 10
Wed Aug 15 12:23:18 2012: control device hw:0
Wed Aug 15 12:23:18 2012: control device hw:0
Wed Aug 15 12:23:18 2012: Acquired audio card Audio0
Wed Aug 15 12:23:18 2012: creating alsa driver ... hw:0|hw:0|2048|2|44100|0|0|nomon|swmeter|-|32bit
Wed Aug 15 12:23:18 2012: control device hw:0
Wed Aug 15 12:23:18 2012: configuring for 44100Hz, period = 2048 frames (46.4 ms), buffer = 2 periods
Wed Aug 15 12:23:18 2012: ALSA: final selected sample format for capture: 32bit integer little-endian
Wed Aug 15 12:23:18 2012: ALSA: use 2 periods for capture
Wed Aug 15 12:23:18 2012: ALSA: final selected sample format for playback: 32bit integer little-endian
Wed Aug 15 12:23:18 2012: ALSA: use 2 periods for playback
Wed Aug 15 12:23:18 2012: graph reorder: new port 'system:capture_1'
Wed Aug 15 12:23:18 2012: New client 'system' with PID 0
Wed Aug 15 12:23:18 2012: graph reorder: new port 'system:capture_2'
Wed Aug 15 12:23:18 2012: graph reorder: new port 'systemlayback_1'
Wed Aug 15 12:23:18 2012: graph reorder: new port 'systemlayback_2'
12:23:21.169 JACK connection change.
12:23:21.170 Server configuration saved to "/home/tom/.jackdrc".
12:23:21.170 Statistics reset.
12:23:21.203 Client activated.
12:23:21.257 JACK connection graph change.
Wed Aug 15 12:23:21 2012: New client 'qjackctl' with PID 17107
12:23:23.884 JACK connection change.
Wed Aug 15 12:23:23 2012: Connecting 'system:capture_1' to 'systemlayback_1'
Wed Aug 15 12:23:23 2012: Connecting 'system:capture_2' to 'systemlayback_2'