After even more digging, looks like the problem is with a parameter that I suspect the tlp package (when using the computer without AC, on battery-saving mode) and the command powertop --autotune are modifying:
Autosuspend for USB device BCM2045A0 [Broadcom Corp] I've seen last message o my machine, but others have reported: Autosuspend for USB device BCM920703 Bluetooth 4.1 [Broadcom Corp] I think adding the file /lib/firmware/brcm/BCM-0a5c-6410.hcd fixes the problem, but there might be other solutions (like not-installing tlp package yet!!) http://ubuntuforums.org/showthread.php?t=2301071&p=13458279#post13458279 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1589889 Title: Bluetooth search gets nothing on Dell XPS 15 9550 Status in bluez package in Ubuntu: Confirmed Bug description: Title: Bluetooth search gets nothing on Dell XPS 15 9550 Summary: Bluetooth search gets nothing on Dell XPS 15 9550 Steps: 1. Open Bluetooth Setting 2. Click "+" to search nearby bluetooth devices Expected results: BT search could get nearby BT devices Actual results: Nothing shows from BT search Additional information: BT device: Bus 001 Device 002: ID 0a5c:6410 Broadcom Corp. Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 1 bDeviceProtocol 1 bMaxPacketSize0 64 idVendor 0x0a5c Broadcom Corp. idProduct 0x6410 CPU: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (8x) GPU: 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06) Manufacturer: Dell ProductName: XPS 15 9550 BiosVersion: 01.02.00 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1589889/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp