Comment 4 for bug 313854

Note that in the first case, the dmesg errors are:
[ 330.140757] iwlagn: Microcode SW error detected. Restarting 0x82000000.
[ 330.165228] iwlagn: No space for Tx
[ 330.165248] iwlagn: Error sending REPLY_TX_PWR_TABLE_CMD: enqueue_hcmd failed: -28

Versus in the latter:
[ 99.208095] iwlagn: START_ALIVE timeout after 4000ms.
[ 99.208178] iwlagn 0000:03:00.0: PCI INT A disabled

Also, in the latter:
  *-network DISABLED

While in the first case, "ifconfig wlan1 up" will bring up the interface (though it won't associate). In the latter case:
$ sudo ifconfig wlan1 up
SIOCSIFFLAGS: Connection timed out

:-Dustin