I got a new XPS 13 a couple of days ago. Everything works great with Ubuntu *except* for bluetooth. After a suspend, the bluetooth is lost and doesn't come back. I tried to remove and install the bluetooth driver with `modprobe -r btusb; modprobe btusb` and to restart the bluetooth service but neither things worked. I also reinstalled from factory defaults (just in case) and the problem persists.
Im sorry to hear about your bluetooth issues?
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I have the same issue on 4.15.0-12-generic. Mine appeared after the last XPS firmware update. I'm going to log a support ticket this morning.
Same issue here with Ubuntu 18.04 / Linux 4.15.0-12-generic / BIOS 1.2.1.
Do use 16.04? I'm asking because Dell Support sugested trying 16.04 first.
I am also on 18.04 - I have another issue (touchpad hardware problem) and am waiting on a new unit so I rolled forward to 18.04 to have a look at the new Gnome. But it worked fine post-that upgrade. The only change I can see is I updated the BIOS last night when prompted.
Okay! Fixed. Steps to resolve (for me)
1. Reboot to BIOS.
2. Go to Wireless tab.
3. Disable Bluetooth and Apply.
4. Re-enable Bluetooth and Apply.
5. Exit and boot.
I spoke too soon.
Problem re-appears periodically and requires a reboot to fix. Does anyone have a workaround for resetting Bluetooth WITHOUT a reboot? I have tried a bunch of things but it's like the device disappears.