Same problem for me, running Ubuntu Intrepid on an HP NC6000 using the atheros drivers: when I come out from hibernate: 1) wifi networks listed by network manager are wrong, 2) I can't reconnect to any wifi network.
The simplest workaround I found is to run "sudo rmmod ath_pci, followed by sudo modprobe ath_pci
Same problem for me, running Ubuntu Intrepid on an HP NC6000 using the atheros drivers: when I come out from hibernate: 1) wifi networks listed by network manager are wrong, 2) I can't reconnect to any wifi network.
The simplest workaround I found is to run "sudo rmmod ath_pci, followed by sudo modprobe ath_pci