Re: [Bug 109321] New: ASUS T100TA Bluetooth stopped working

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Hello,

On 14/12/2015 02:36, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:
Hello

since kernel 4.2.3 the bluetooth on ASUS t100TA stopped working

can no longer initialize it using hciattach /dev/ttyS4 bcm43xx command it
always times out it also registers different in dmesg

  80860F0A:00: ttyS4 at MMIO 0x9094d000 (irq = 191, base_baud = 2764800) is a
16550A
[    5.629222] Bluetooth: Core ver 2.21
[    5.629287] NET: Registered protocol family 31
[    5.629291] Bluetooth: HCI device and connection manager initialized
[    5.629299] Bluetooth: HCI socket layer initialized
[    5.629305] Bluetooth: L2CAP socket layer initialized
[    5.629318] Bluetooth: SCO socket layer initialized
[    5.643749] Bluetooth: HCI UART driver ver 2.3
[    5.643757] Bluetooth: HCI UART protocol H4 registered
[    5.643760] Bluetooth: HCI UART protocol BCSP registered
[    5.643763] Bluetooth: HCI UART protocol LL registered
[    5.643765] Bluetooth: HCI UART protocol ATH3K registered
[    5.643768] Bluetooth: HCI UART protocol Three-wire (H5) registered
[    5.643853] Bluetooth: HCI UART protocol Intel registered
[    5.657970] hci_bcm BCM2E39:00: BCM irq: 192
[    5.658046] Bluetooth: BCM2E39:00: Asus T100TA: Overwriting IRQ polarity to
active low
[    5.658051] hci_bcm BCM2E39:00: BCM2E39:00 device registered.
[    5.658224] Bluetooth: HCI UART protocol BCM registered

not sure if this is a bug in the kernel driver or if something was changed
BlueZ and not updated in the bcm driver

also it no longer registers with rfkill which i think was changed

Bluetooth BCM chipset is no more managed by rfkill and hciattach.
You should use btattach to register it (BlueZ >= 5.31):
	btattach --bredr /dev/ttyS4 -P bcm
then (you should change the device address):
	btmgmt public-addr "43:24:b3:01:02:03"

Hope this helps

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