Created attachment 770342 [details] dmesg output for kernel from bnc1082504-3 repo Takashi, With kernel from bnc1082504-3 repo I found that both btusb and ath3k just not loaded. I tried to load it with modprobe ang got some errors: [ 165.742724] btqca_usb: Unknown symbol usb_bulk_msg (err 0) [ 165.742773] btqca_usb: Unknown symbol usb_control_msg (err 0) [ 183.843327] btqca_usb: Unknown symbol usb_bulk_msg (err 0) [ 183.843360] btqca_usb: Unknown symbol usb_control_msg (err 0) Please check attached archive, as usual there are 2 dmesg output: first one taken just after system start and another one - after I tried to load modules. Regarding your previous comment ("please try modprobe -r") - I did that, please check previous attachment.