This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1971514

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1971514

Title:
  No Bluetooth found: Plug in a dongle to use Bluetooth

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Seemingly out of nowhere, Bluetooth stopped working on my laptop -
  Lenovo Thinkpad E585.  Have Dual Boot setup, Bluetooth works in
  Windows 10 just fine.

  Following the format of bug #1859592:

  $ dmesg | grep -i bluetooth
  [    1.429958] usb 3-1: Product: Bluetooth Radio 
  [    3.503239] Bluetooth: Core ver 2.22
  [    3.503271] Bluetooth: HCI device and connection manager initialized
  [    3.503277] Bluetooth: HCI socket layer initialized
  [    3.503279] Bluetooth: L2CAP socket layer initialized
  [    3.503285] Bluetooth: SCO socket layer initialized
  [    7.794637] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [    7.794639] Bluetooth: BNEP filters: protocol multicast
  [    7.794643] Bluetooth: BNEP socket layer initialized

  $ uname -a
  Linux BurritoBox 5.4.0-109-generic #123-Ubuntu SMP Fri Apr 8 09:10:54 UTC 
2022 x86_64 x86_64 x86_64 GNU/Linux

  AMD® Ryzen 3 2200u with radeon vega mobile gfx × 4 Ubuntu 20.04 LTS

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