Sine long ago I've noticed that blueman does not show any usb bluetooth adapters after resuming from suspend to disk. The driver is not dead. "hcitool scan" can find remote devices. It's just that blueman doesn't show the adapter.
Finally today I cannot stand it anymore and found that the solution is simply
chmod -x /usr/lib/pm-utils/sleep.d/49bluetooth-generic"
Am I the only one having this problem?