XPS 13 9370 no bluetooth after suspend

It doesn't fix it. I've upgraded and it's still there. I got an update from Dell early last week saying the firmware patch was still being tested. No ETA.

Hey guys,

I'm on Fedora 28, Kernel 4.18.7 on a XPS 9370, and I got the latest BIOS version 1.5.1.

Sadly I'm also able to confirm that the bug still exists, it is extremely annoying since everytime I want to use bluetooth after waking my  XPS it does not work :(

Okay - I have good news and bad news. The good news is I have a working fix. The bad news is that it requires upgrading to at least a 4.16 kernel - so if you're on a stock bionic or earlier kernel then it's no joy.

Steps to fix:

1. Create a kernel module configuration file - I've used:

/etc/modprobe.d/disable_autosuspend.conf

2. Populate the file with:

options btusb enable_autosuspend=n

3. Reboot.

Problem fixed (for me anyway). Sadly the enable_autosuspend feature requires a 4.16 or later kernel. Hope that helps someone else.

If anyone's curious - I followed along with this bug report - https://bugzilla.kernel.org/show_bug.cgi?id=199351. 

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@jamtur01 wrote:

Okay - I have good news and bad news. The good news is I have a working fix. The bad news is that it requires upgrading to at least a 4.16 kernel - so if you're on a stock bionic or earlier kernel then it's no joy.

Steps to fix:

1. Create a kernel module configuration file - I've used:

/etc/modprobe.d/disable_autosuspend.conf

2. Populate the file with:

options btusb enable_autosuspend=n

3. Reboot.

Problem fixed (for me anyway). Sadly the enable_autosuspend feature requires a 4.16 or later kernel. Hope that helps someone else.

If anyone's curious - I followed along with this bug report - https://bugzilla.kernel.org/show_bug.cgi?id=199351. 

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Running ubuntu 18.04 with Kernel 4.18.1. It does not work for me, it still gets disabled after suspending.

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@Thomas0 wrote:

I recently bought a 9370 developer edition. My bluetooth has been experiencing the same issues as reported here. How can I work with dell to help them fix this issue?

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As pointed out by a Dell employee 3 posts above there is no fix, yet but they are apparently aware of the issue. You have to wait I'm afraid and follow this thread. Also have a look at the this bugreport at launchpad: https://bugs.launchpad.net/dell-sputnik/+bug/1766825

I recently bought a 9370 developer edition. My bluetooth has been experiencing the same issues as reported here. How can I work with dell to help them fix this issue?

https://github.com/hyphone/xps-9370-linux

have a look at the files etc/systemd/system/bluetooth* and usr/sbin/bluetooth*

those should be enough for disabling on suspend and re-enabling it afterwards.

copy them to the corresponding folders in your root directory, make the usr/sbin ones executable and enable the corresponding systemd services.

but with no guaranty. If it doesn't work I'll post it here and update the git repo accordingly.

Nope disabling bluetooth before suspending does also not work. I wait for a real fix before I focus my attention on false assumptions again.

I generally have pretty good luck with BT following suspend/resume. Yesterday BT simply did not come up following a reboot. I performed a complete power cycle and BT worked again.

I'm running Debian Stretch with WiFi firmware downloaded from the Killer github account a couple weeks ago. It works most of the time but is not 100% reliable. 

Same with my xps (ubuntu 18.10).  Pretty annoying thing.

I disabled autosuspend in tlp. Will watch how it helps

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@kao_kz wrote:

Same with my xps (ubuntu 18.10).  Pretty annoying thing.

I disabled autosuspend in tlp. Will watch how it helps

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Don't hold your breath and wait for a fix confirmation. Every possible switch / hack / fiddle was done already and nothing helps.