Bluetooth intermitent connection

Support and Help
1

Hi,

I just made a fresh install of 24.04 in a brandnew Dell Precision 3680 desktop (it came with 22.04 and I haven´t tested 22.04). I noticed Bluetooth is not working as expected:

  1. My Logitech M720 mouse sometimes disconnects and does not reconnect automatically.
  2. The mouse is slow (laggy) at times when moving
  3. My Glove80 ergonomic keyboard does not connect through Bluetooth
  4. In some of the installations that I was able to connect the keyboard, the keys were lagging and sometimes were being repeted constantly (just like when you hold a key)

The output to wireless-info is in the following link: https://termbin.com/13fx

Any help will be appreciated.

2

Looking at your wireless-info output, you’re running kernel 6.8.0-51-generic with the iwlwifi driver for your Intel AX211 wireless card. The Bluetooth issues you’re experiencing align with known driver problems in this kernel version.

Here’s two options you can try:

Install mainline kernel
  1. Test with a newer kernel (6.11.*) using Ubuntu Mainline Kernel PPA:
sudo add-apt-repository ppa:cappelikan/ppa
sudo apt update
sudo apt install mainline

Then use the Mainline app (GUI) or run:

sudo mainline --install-latest 6.11

  1. After installing, reboot and select the 6.11 kernel from GRUB menu.

  2. If issues persist, revert to previous kernel:

sudo mainline --uninstall 6.11.*

Important notes:

  • This is a test solution using a development kernel
  • The Mainline PPA is maintained by Canonical for testing
  • Back up important data before kernel changes
  • wireless-info shows SecureBoot is enabled - you may need to temporarily disable it for testing
3

The Dell OEM installs that are pre-installed on devices often come with specific drivers and/or quirks included from the http://dell.archive.canonical.com/ repository …

Instead of installing over the pre-installed 22.04 you should have upgraded it … that way these quirks might have been carried over from the original OEM image (pre-installed images are usually tested by Canonicals certification team for fully working hardware support)