My dongle was never a problem with 10.10 but would not P&P at all in 11.04 for the first three days. Now it "usually" works if I start up with it inserted but never if inserted live. usb-devices:- T: Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0a12 ProdID=0001 Rev=52.76 C: #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb On failure:- [ 435.656168] usb 2-2: USB disconnect, address 2 [ 435.657041] btusb_intr_complete: hci0 urb f1429300 failed to resubmit (19) [ 435.657071] btusb_bulk_complete: hci0 urb f1429200 failed to resubmit (19) [ 435.658041] btusb_bulk_complete: hci0 urb f1429180 failed to resubmit (19) [ 435.658134] btusb_send_frame: hci0 urb f1f64800 submission failed [ 443.560181] usb 2-2: new full speed USB device using uhci_hcd and address 3 [ 1523.136185] usb 2-2: USB disconnect, address 3 [ 1540.576160] usb 2-2: new full speed USB device using uhci_hcd and address 4 On success:- [ 25.177801] Bluetooth: Generic Bluetooth USB driver ver 0.6 [ 25.231100] usbcore: registered new interface driver btusb [ 25.644274] Bluetooth: L2CAP ver 2.15 [ 25.644284] Bluetooth: L2CAP socket layer initialized [ 25.678833] cfg80211: World regulatory domain updated: [ 25.678844] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 25.678855] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 25.678865] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 25.678875] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 25.678884] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 25.678894] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 25.701647] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 25.701656] Bluetooth: BNEP filters: protocol multicast [ 25.734683] Bluetooth: SCO (Voice Link) ver 0.6 [ 25.734693] Bluetooth: SCO socket layer initialized [ 25.924624] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 25.924640] i915 0000:00:02.0: setting latency timer to 64 [ 25.998449] Bluetooth: RFCOMM TTY layer initialized [ 25.998464] Bluetooth: RFCOMM socket layer initialized [ 25.998471] Bluetooth: RFCOMM ver 1.11 [ 26.087690] i915 0000:00:02.0: irq 44 for MSI/MSI-X [ 26.087707] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [ 26.087714] [drm] Driver supports precise vblank timestamp query. [ 26.200936] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 26.202981] [drm] initialized overlay support [ 26.400079] ath9k 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 26.400103] ath9k 0000:02:00.0: setting latency timer to 64 [ 26.452504] ath: EEPROM regdomain: 0x65 [ 26.452513] ath: EEPROM indicates we should expect a direct regpair map [ 26.452524] ath: Country alpha2 being used: 00 [ 26.452529] ath: Regpair used: 0x65 [ 26.452720] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule: [ 26.452731] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452740] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule: [ 26.452750] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452759] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule: [ 26.452769] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452777] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule: [ 26.452787] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452795] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule: [ 26.452805] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452814] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule: [ 26.452824] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452832] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule: [ 26.452842] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452850] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule: [ 26.452860] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452869] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule: [ 26.452878] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452887] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule: [ 26.452896] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452905] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule: [ 26.452914] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452923] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule: [ 26.452932] cfg80211: 2457000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452940] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule: [ 26.452950] cfg80211: 2457000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm) [ 26.452958] cfg80211: Disabling freq 2484 MHz as custom regd has no rule that fits a 20 MHz wide channel [ 26.455524] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain Console: switching to colour frame buffer device 128x37 [ 26.506916] fb0: inteldrmfb frame buffer device [ 26.506924] drm: registered panic notifier [ 26.519386] ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control' [ 26.536127] Registered led device: ath9k-phy0::radio [ 26.536509] Registered led device: ath9k-phy0::assoc [ 26.536884] Registered led device: ath9k-phy0::tx [ 26.538978] Registered led device: ath9k-phy0::rx [ 26.539009] ieee80211 phy0: Atheros AR9285 Rev:2 mem=0xf8620000, irq=17 [ 26.558624] ppdev: user-space parallel port driver [ 26.674786] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 26.876286] acpi device:25: registered as cooling_device3 [ 26.876909] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input7 [ 26.877114] ACPI: Video Device [OVGA] (multi-head: yes rom: no post: no) [ 26.877608] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 [ 26.877710] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 26.877849] HDA Intel 0000:00:1b.0: irq 45 for MSI/MSI-X [ 26.877911] HDA Intel 0000:00:1b.0: setting latency timer to 64 [ 27.054144] hda_codec: ALC272X: BIOS auto-probing. [ 27.067442] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8 [ 27.068158] fixme: max PWM is zero. [ 27.068853] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9 [ 27.858810] Bluetooth: HIDP (Human Interface Emulation) ver 1.2 [ 27.863511] input: Targus Soft-Touch Bluetooth Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/bluetooth/hci0/hci0:43/input10 [ 27.867420] generic-bluetooth 0005:1048:03ED.0001: input,hidraw0: BLUETOOTH HID v2.45 Mouse [Targus Soft-Touch Bluetooth Mouse] on 00:15:83:45:3E:59