XPS 13 9370 no bluetooth after suspend

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.

99 Replies

Re: XPS 13 9370 no bluetooth after suspend

Hi Fabian,

 

Im sorry to hear about your bluetooth issues? 

The best course of action is for you to use the link below to submit your issues.  By doing so, support can address your issue and track it in the system.

The following dynamic link takes you to our contact list and it should adjust based on support available in your region.  If it does not, you can select your region in the bottom right corner to update it.

http://www.dell.com/support/incidents-online/us/en/04/contactus/Dynamic

thanks,

Barton

Barton George

drFaustroll
1 Copper

Re: XPS 13 9370 no bluetooth after suspend

i have the same on kernel 4.16.0-rc6-1.ga98eb00-default or 4.15.

did you have any luck with dell support?

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jamtur01
1 Nickel

Re: XPS 13 9370 no bluetooth after suspend

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.

Cheers

James

marcaux
2 Bronze

Re: XPS 13 9370 no bluetooth after suspend

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.

jamtur01
1 Nickel

Re: XPS 13 9370 no bluetooth after suspend

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.

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jamtur01
1 Nickel

Re: XPS 13 9370 no bluetooth after suspend

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.

Bluetooth back.

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marcaux
2 Bronze

Re: XPS 13 9370 no bluetooth after suspend

For me it fixes itself after a few suspends (as well as a reboot). But the problem recurs.

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jamtur01
1 Nickel

Re: XPS 13 9370 no bluetooth after suspend

I spoke too soon. Smiley Happy

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. Smiley Sad

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marcaux
2 Bronze

Re: XPS 13 9370 no bluetooth after suspend

Also rescanning the PCI devices with

# echo 1 > /sys/bus/pci/rescan

does not solve the problem

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