I just bought ASUS K73SV, and instantly installed Ubuntu 11.04 next to the Win7 that came preinstalled.

Everything is working ok, except bluetooth won't start when I boot the computer to Ubuntu. If I boot to Win7, then restart back to Ubuntu, BT will work. If I reboot the computer while BT is working and boot back to Ubuntu, BT will work. If I halt the computer, even for a second, and boot straight to Ubuntu, BT does not work (Gnome Bluetooth Settings only has a button [Turn On Bluetooth] that does nothing)

I believe it's one of these:

03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
Subsystem: AzureWave Device 2c37
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at de200000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: ath9k
Kernel modules: ath9k

04:00.0 Ethernet controller: Atheros Communications Device 1083 (rev c0)
Subsystem: ASUSTeK Computer Inc. Device 1851
Flags: bus master, fast devsel, latency 0, IRQ 44
Memory at dd800000 (64-bit, non-prefetchable) [size=256K]
I/O ports at a000 [size=128]
Capabilities: <access denied>
Kernel driver in use: atl1c
Kernel modules: atl1c