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Re: [Bug 1394368] Re: Bluetooth with AR9462 doesn't work (New ID /Firmware)

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Raphaël Jakse <raphael.jakse@xxxxxxxxx>
Date: Mon, 10 Aug 2015 19:53:56 -0000
Reply-to: Bug 1394368 <1394368@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I commented on the duplicate because I think the situation is a bit 
different.
This patch simply fixes #1394368, that is, for many people who have the 
0x04ca:0x300d device.

However, the same patch makes the same device enter a disconnect / 
reconnect infinite loop in my specific laptop model (Acer Aspire 
V3è371-31KW). The original poster of the duplicate, #1397885, also has 
an Acer Aspire and might be affected by the same issue (not sure about 
it). Sorry about commenting the duplicate if it was wrong.

On my laptop, the patch makes the firmware load into the device and it 
begins an infinite disconnect/reconnect cycle. The boot makes ages, 
lsusb freezes.

Quoting myself 
(https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1397885/comments/22) :

"Under your kernel, the whole computer runs unstable. the login manager 
and X won't always start, the system takes ages to start, lsusb feezes 
and I get a log of the following with journalctl -xe.

  mai 02 19:21:00 white kernel: usb 1-5: new full-speed USB device 
number 49 using xhci_hcd
mai 02 19:21:01 white kernel: usb 1-5: New USB device found, 
idVendor=04ca, idProduct=300d
mai 02 19:21:01 white kernel: usb 1-5: New USB device strings: Mfr=0, 
Product=0, SerialNumber=0
mai 02 19:21:01 white kernel: usb 1-5: USB disconnect, device number 49
mai 02 19:21:01 white kernel: usb 1-5: new full-speed USB device number 
50 using xhci_hcd
mai 02 19:21:01 white kernel: usb 1-5: New USB device found, 
idVendor=04ca, idProduct=300d
mai 02 19:21:01 white kernel: usb 1-5: New USB device strings: Mfr=0, 
Product=0, SerialNumber=0
mai 02 19:21:01 white kernel: usb 1-5: USB disconnect, device number 50
mai 02 19:21:01 white kernel: usb 1-5: new full-speed USB device number 
51 using xhci_hcd
mai 02 19:21:02 white kernel: usb 1-5: New USB device found, 
idVendor=04ca, idProduct=300d
mai 02 19:21:02 white kernel: usb 1-5: New USB device strings: Mfr=0, 
Product=0, SerialNumber=0
mai 02 19:21:02 white kernel: usb 1-5: USB disconnect, device number 51
mai 02 19:21:02 white kernel: usb 1-5: new full-speed USB device number 
52 using xhci_hcd
mai 02 19:21:02 white kernel: usb 1-5: New USB device found, 
idVendor=04ca, idProduct=300d
mai 02 19:21:02 white kernel: usb 1-5: New USB device strings: Mfr=0, 
Product=0, SerialNumber=0
mai 02 19:21:02 white kernel: usb 1-5: USB disconnect, device number 52
mai 02 19:21:03 white kernel: usb 1-5: new full-speed USB device number 
53 using xhci_hcd
mai 02 19:21:03 white kernel: usb 1-5: New USB device found, 
idVendor=04ca, idProduct=300d
mai 02 19:21:03 white kernel: usb 1-5: New USB device strings: Mfr=0, 
Product=0, SerialNumber=0
mai 02 19:21:03 white kernel: usb 1-5: USB disconnect, device number 53
mai 02 19:21:03 white kernel: usb 1-5: new full-speed USB device number 
54 using xhci_hcd
mai 02 19:21:03 white kernel: usb 1-5: New USB device found, 
idVendor=04ca, idProduct=300d
mai 02 19:21:03 white kernel: usb 1-5: New USB device strings: Mfr=0, 
Product=0, SerialNumber=0"

I made a workaround which makes the device work by loading the patched 
modules, unload them and load the unpatched ones. The firmware being 
loaded, the unpatched modules are able to drive the device.

I sent a mail to the Bluetooth maintainer's mailing list last month, but 
for some reasons, it might have been unnoticed, I didn't received any reply.

I'm concerned for unexperienced users of this computer getting trouble 
with new kernels. If I can help, don't hesitate to ask me any 
information about by laptop.

Cheers,
Raphaël.

-- 
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https://bugs.launchpad.net/bugs/1394368

Title:
  Bluetooth with AR9462 doesn't work (New ID /Firmware)

Status in linux package in Ubuntu:
  Fix Released
Status in linux-firmware package in Ubuntu:
  Confirmed
Status in linux source package in Vivid:
  Fix Committed
Status in linux-firmware source package in Vivid:
  Confirmed

Bug description:
  This is (kind of) a duplicate of:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1024884
  (please read)

  I can't use Bluetooth with my AR9462 WLAN/BT-Combo.
  In the link above, it has been fixed, but not for my Adapter ID/Firmware:

  System:
  Ubuntu 14.10 utopic 64bit - 3.16.0-24-generic x86_64

  lspci -nnk
  02:00.0 Network controller [0280]: Qualcomm Atheros AR9462
  Wireless Network Adapter [168c:0034] (rev 01)
   Subsystem: Lite-On Communications Inc Device [11ad:0802]
   Kernel driver in use: ath9k

  lsusb (identified Bluetooth Device)
  Bus 002 Device 003: ID 04ca:300d Lite-On Technology Corp.

  ath9k.conf
  options ath9k btcoex_enable=1

  The "04ca:300d" ID is not in the Kernel, so i added it via dkms.

  I took ath3k.c and btusb.c out of the 3.16.0-24-generic source files
  and changed them:

  diff -urN ./linux-3.16.0/drivers/bluetooth/ath3k.c /usr/src/ar9462-1.5.1/ath3k.c
  --- ./linux-3.16.0/drivers/bluetooth/ath3k.c	2014-08-04 00:25:02.000000000 +0200
  +++ /usr/src/ar9462-1.5.1/ath3k.c	2014-11-19 21:12:46.646265890 +0100
  @@ -85,6 +85,7 @@
    { USB_DEVICE(0x04CA, 0x3007) },
    { USB_DEVICE(0x04CA, 0x3008) },
    { USB_DEVICE(0x04CA, 0x300b) },
  +	{ USB_DEVICE(0x04CA, 0x300d) },
    { USB_DEVICE(0x0930, 0x0219) },
    { USB_DEVICE(0x0930, 0x0220) },
    { USB_DEVICE(0x0b05, 0x17d0) },
  @@ -134,6 +135,7 @@
    { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
  +	{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },

  diff -urN ./linux-3.16.0/drivers/bluetooth/btusb.c /usr/src/ar9462-1.5.1/btusb.c
  --- ./linux-3.16.0/drivers/bluetooth/btusb.c	2014-08-04 00:25:02.000000000 +0200
  +++ /usr/src/ar9462-1.5.1/btusb.c	2014-11-19 21:12:46.646265890 +0100
  @@ -157,6 +157,7 @@
    { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
  +	{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
    { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },

  sudo dkms add -m ar9462 -v 1.5.1
  sudo dkms build -m ar9462 -v 1.5.1
  sudo dkms install -m ar9462 -v 1.5.1

  (DKMS package in the same style/versioning as in the bug report above)

  dkms status
  ar9462, 1.5.1, 3.16.0-24-generic, x86_64: installed

  Now the new output:

  dmesg | egrep 'ath3|ar3|Bluet'
  [    2.787819] Bluetooth: Core ver 2.19
  [    2.787833] Bluetooth: HCI device and connection manager initialized
  [    2.787839] Bluetooth: HCI socket layer initialized
  [    2.787842] Bluetooth: L2CAP socket layer initialized
  [    2.787848] Bluetooth: SCO socket layer initialized
  [    2.793551] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [    2.793554] Bluetooth: BNEP filters: protocol multicast
  [    2.793561] Bluetooth: BNEP socket layer initialized
  [    3.130779] Bluetooth: Patch file not found ar3k/AthrBT_0x11020100.dfu
  [    3.130783] Bluetooth: Loading patch file failed
  [    3.130788] ath3k: probe of 2-5:1.0 failed with error -12
  [    3.130823] usbcore: registered new interface driver ath3k
  [    9.776503] Bluetooth: RFCOMM TTY layer initialized
  [    9.776512] Bluetooth: RFCOMM socket layer initialized
  [    9.776517] Bluetooth: RFCOMM ver 1.11

  My patch works, but just like in the bug report above, a Firmware file is missing:
  AthrBT_0x11020100.dfu

  I found it neither in linux-firmware (http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/ar3k)
  nor elsewhere.

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References

[Bug 1394368] [NEW] Bluetooth with AR9462 doesn't work (New ID /Firmware)
From: Wallcom, 2014-11-19
[Bug 1394368] Re: Bluetooth with AR9462 doesn't work (New ID /Firmware)
From: Brad Figg, 2015-08-10