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I have new Lenovo Z50-70 with NVIDIA 820M graphics card. I am using 340v driver for it.

Bluetooth is not working, it says bluetooth is disable while wifi is working fine

output of lsusb; lsmod | grep bluetooth; dmesg | grep firmware is:

Bus 001 Device 002: ID 8087:8000 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 0cf3:3004 Atheros Communications, Inc. 
Bus 002 Device 003: ID 5986:055e Acer, Inc 
Bus 002 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
bluetooth             446409  12 bnep,ath3k,btusb,rfcomm
6lowpan_iphc           18702  1 bluetooth
[   14.491624] Bluetooth: Error in firmware loading err = -110,len = 448, size = 4096
Alex Jones
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1 Answers1

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Every thing actually looks good but your bluetooth probably only works maybe every third boot. This is what worked for me

echo "blacklist ath3k" | sudo tee /etc/modprobe.d/ath3k.conf

Then we edit a file to load ath3k later in the boot cycle gksudo gedit /etc/rc.local and above the line that says exit 0 put sleep 10 and on the line below that put modprobe ath3k save, exit gedit and reboot.

The last 3 lines of the /etc/rc.local file should be

sleep 10

modprobe ath3k

exit 0

That should help with the firmware error as there is a timing issue with xhci_hcd that prevents ath3k from loading the firmware every time

NOTE: Issue is resolved with kernel 3.16.0-32 or newer from Ubuntu without the above changes per comment 12 at bug report and also fixed now in 3.13.0-47 per update log see * Bluetooth: ath3k: workaround the compatibility issue with xHCI controller - LP: #1400215

Jeremy31
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  • thanks man, but please can you or any of your friends help me with the nvidia driver problem? – Alex Jones Mar 01 '15 at 17:05
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    http://ubuntuforums.org/showthread.php?t=2260335&p=13206697#post13206697 says that this other post helped http://askubuntu.com/questions/451221/ubuntu-14-04-install-nvidia-driver but they used nvidia-current – Jeremy31 Mar 01 '15 at 17:35
  • hey today I had the same issue again, I rebooted, still did not helped. what to do now? – Alex Jones Mar 08 '15 at 09:29
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    I would edit the /etc/rc.local file and change it from sleep 10 to sleep 30 then save, exit, and reboot – Jeremy31 Mar 08 '15 at 12:09
  • sir, I am sorry, but bluetooth is not working at all after installing windows 8 – Alex Jones Mar 13 '15 at 06:02
  • If you can install kernel 3.16.0-32, the issue is fixed in Ubuntu sudo apt-get install --install-recommends linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic You may have to enable proposed repository in software and updates and do another sudo apt-get update && sudo apt-get upgrade and a reboot to get 3.16.0-32 loaded. If you need bluetooth to work in Win, go to lenovo.com and see if you can download the Qualcom bluetooth drivers – Jeremy31 Mar 13 '15 at 10:22
  • what i meant was after installing windows 8 i am not able to use bluetooth on ubuntu – Alex Jones Mar 13 '15 at 19:03
  • So are you booting into Windows and rebooting into Ubuntu, or do you shut down from Win8 and power it back up and go into Ubuntu? – Jeremy31 Mar 13 '15 at 19:20
  • I shutdown windows completely and then power up ubuntu – Alex Jones Mar 13 '15 at 19:24
  • Are there any firmware or bluetooth errors in dmesg? Check to see if ath3k and btusb are still being loaded – Jeremy31 Mar 13 '15 at 19:29
  • Let us continue this discussion in chat. – Alex Jones Mar 13 '15 at 20:08
  • sir if i put my laptop to sleep and resume i found bluetooth disabled, i ran modprobe ath3k but no use, i had to restart computer to get it working, i am using linux kernel v3.19 – Alex Jones Apr 08 '15 at 16:00
  • oops i forgot to say i am on ubuntu 15.04 :p – Alex Jones Apr 08 '15 at 17:06
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    After resume try sudo modprobe -r ath3k then sudo modprobe ath3k – Jeremy31 Apr 08 '15 at 21:39
  • please help me out with this problem: http://unix.stackexchange.com/q/311045/52733 – Alex Jones Jan 12 '17 at 12:28