daemon.log
Oct 29 21:58:43 jernst-desktop bluetoothd[6499]: HCI dev 0 registered
Oct 29 21:58:43 jernst-desktop bluetoothd[6499]: HCI dev 0 up
Oct 29 21:58:48 jernst-desktop bluetoothd[6499]: Registered interface org.bluez.Service on path /org/bluez/hci0
Oct 29 21:58:53 jernst-desktop bluetoothd[6499]: Can't write class of device: Connection timed out (110)
Same bug with another similar bluetooth dongle (I think it's the same chip) :
2001:f111 D-Link Corp. [hex] DBT-122 Bluetooth adapter
dmesg :
[ 339.011026] hci_cmd_task: hci0 command tx timeout
daemon.log
Oct 29 21:58:43 jernst-desktop bluetoothd[6499]: HCI dev 0 registered
Oct 29 21:58:43 jernst-desktop bluetoothd[6499]: HCI dev 0 up
Oct 29 21:58:48 jernst-desktop bluetoothd[6499]: Registered interface org.bluez.Service on path /org/bluez/hci0
Oct 29 21:58:53 jernst-desktop bluetoothd[6499]: Can't write class of device: Connection timed out (110)
jernst@ jernst- desktop: ~$ sudo hcitool scan
Scanning ...
Inquiry failed: Connection timed out
jernst@ jernst- desktop: ~$ sudo hciconfig hci0 reset jernst- desktop: ~$ sudo hcitool scan
jernst@
Scanning ...
00:19:7D:EA:A6:14 n/a