Quando inicializo o Ubuntu, posso usar o Bluetooth claramente. Mas se ficar sem usar, pare de funcionar. O indicador fica cinza ou não aparece na barra.
Eu tento reiniciar o bluetooth com service bluetooth restart , mas ele não está sendo iniciado novamente, como a reinicialização. Se eu reiniciar o pc, o Bluetooth está normalmente disponível novamente.
bluetoothd -v
5.37
uname -a
Linux zzz-pc 4.10.0-38-generic #42~16.04.1-Ubuntu SMP Tue Oct 10 16:32:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
dmesg | grep -i blue
[ 2.393700] usb 2-1.4: Product: Bluetooth USB Host Controller
[ 16.086907] Bluetooth: Core ver 2.22
[ 16.086923] Bluetooth: HCI device and connection manager initialized
[ 16.086926] Bluetooth: HCI socket layer initialized
[ 16.086929] Bluetooth: L2CAP socket layer initialized
[ 16.086934] Bluetooth: SCO socket layer initialized
[ 27.501533] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 27.501535] Bluetooth: BNEP filters: protocol multicast
[ 27.501539] Bluetooth: BNEP socket layer initialized
[ 33.097386] usb 2-1.4: Product: Bluetooth USB Host Controller
[ 33.197758] Bluetooth: RFCOMM TTY layer initialized
[ 33.197762] Bluetooth: RFCOMM socket layer initialized
[ 33.197768] Bluetooth: RFCOMM ver 1.11
[ 8160.277753] usb 2-1.4: Product: Bluetooth USB Host Controller
[ 8178.966032] usb 2-1.4: Product: Bluetooth USB Host Controller
[17461.968638] usb 2-1.4: Product: Bluetooth USB Host Controller
[17480.873514] usb 2-1.4: Product: Bluetooth USB Host Controller
[17483.339029] Bluetooth: hci0 command 0x2009 tx timeout
[17485.387057] Bluetooth: hci0 command 0x0c13 tx timeout
[17487.435082] Bluetooth: hci0 command 0x0c52 tx timeout
[22859.693778] usb 2-1.4: Product: Bluetooth USB Host Controller
[22876.462772] usb 2-1.4: Product: Bluetooth USB Host Controller
[27940.354667] usb 2-1.4: Product: Bluetooth USB Host Controller
[27957.030886] usb 2-1.4: Product: Bluetooth USB Host Controller
[27959.112966] Bluetooth: hci0 command 0x1002 tx timeout
[27961.128999] Bluetooth: hci0 command 0x0c52 tx timeout
[27963.144967] Bluetooth: hci0 command 0x0c45 tx timeout
[27965.161023] Bluetooth: hci0 command 0x0c58 tx timeout
[27967.177069] Bluetooth: hci0 command 0x1004 tx timeout
[38633.848487] usb 2-1.4: Product: Bluetooth USB Host Controller
[38652.124924] usb 2-1.4: Product: Bluetooth USB Host Controller
[47455.046230] usb 2-1.4: Product: Bluetooth USB Host Controller
[47471.722285] usb 2-1.4: Product: Bluetooth USB Host Controller