bluetooth mouse random disconnects

[Richard Ulrich]

I received the Dell XPS 13 DE (9350) accompanied by the WD15 docking station last September. Ever since I used it with my Logitech MX Master bluetooth mouse.
This worked very well and reliably for September through November.
But Since about start of December, it disconnects frequently and without any apparent reason.
I can get it back to order by disabling and re-enabling the bluetooth radio of the notebook. After I re-enable the bt radio and move the mouse it work immediately without any delay.
Sometimes it disconnects after 10 seconds. Sometimes I can work for 10 hours without any disconnect.
For the entire lifetime the device has been running xenial. Currently I'm on kernel Linux XPS13ulr 4.4.0-53-generic #74-Ubuntu SMP
Because the issue started happening at a certain date, I strongly believe that it was caused by and upgrade, possibly kernel.

I wanted to see if the same disconnects also happen with other BT devices. But for as long as I had the Jabra Halo 2 headset connected, also the mouse worked reliably.
The mouse is my only BT LE device. Maybe that makes a difference.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jared Dominguez (jared-dominguez)]

It looks like on OEM systems, we tweak /etc/bluetooth/main.conf by adding "AutoEnable=true". Can you check what that's set to on your system?

[n.a.r.d (n-a-r-d)]

I have a Dell XPS DE, but I re-install on it a usual Ubuntu 16.04. I have the same problem and on /etc/bluetooth/main.conf there is "#AutoEnable=false" (default behavior is anyway AutoEnable=false).
Even by changing it to "true" the problem is still there.

[fINTiP (lacking-latin)]

Dell Precision 7510 with mx master here. Same bug. Didn't knowingly update my kernel. Worked fine in precision 3510 with 14.04 for a year. Was working well, not sure what changed for me. Incredibly irritating.

[ipkpjersi (ipkpjersi)]

I am not sure if this is the right bug report, but I get random disconnects with my Edifier W800BT headphones and Orico BTA-408 adapter on Ubuntu 16.04 with Kernel 4.15.0-39-generic x86_64. Sometimes it reconnects automatically, other times I have to unplug the adapter and plug it back in and turn my headphones on and off and sometimes even manually reconnect with bluetoothctl or blueman-manager.