I can confirm same problem and solution - missing device id's and USB3
incompatibility (very sporadic working) for HP ProBook 450 G1.
Kernel id patch and custom compiled kernel with disabled USB3 completely
resolves bluetooth problems.
Below - output with default kernel:
uname -a
Linux oskars-HP-ProBook-450-G1 3.11.0-17-generic #31-Ubuntu SMP Mon Feb 3
21:52:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M
|__ Port 7: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 12: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 12: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
lsusb
Bus 003 Device 003: ID 0cf3:311f Atheros Communications, Inc.
lspci -vvnn | grep Atheros
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless
Network Adapter [168c:0036] (rev 01)
Custom kernel is same as original kernel, except disabled USB3 and patched
ath3k.ko and btusb.ko, compiled from https://github.com/Satius/mod_0cf3_311f
source.
Unfortunately from tomorrow i'll be mostly unable to test any changes,
since that computer goes away in production.
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https://bugs.launchpad.net/bugs/1237296
Title:
168c:0036 [Acer Aspire E1-572] ath9k QCA9565/AR9565/QCWB335 Bluetooth
works sporadic
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