[Bug 1903048] Re: [SRU] Bluetooth won't activate on the pi 400

[Tony Molloy]

Hi,

I implemented the fix detailed in the test case yesterday and the bug
still existed. I've double checked again this morning and done a
full-upgrade just to check nothing new was waiting and the bug still
exists on this Mate 20.10 install. Yesterday after applying the fix I
started getting random "System problem detected, report this?" popups
but none so far today.

Blueman Applet is set as a startup item and both blueman-applet and
blueman-tray appear as running processes but running blueman-manager or
blueman-adapters from the command line both fail with the message
'Blueman applet needs to be running' The Bluetooth panel item isnt shown.

OS: Ubuntu MATE 20.10 aarch64
Host: Raspberry Pi 400 Rev 1.0
Kernel: 5.8.0-1007-raspi

Tony

On 11/11/2020 04:32, Launchpad Bug Tracker wrote:
> This bug was fixed in the package bluez - 5.55-0ubuntu2
>
> ---------------
> bluez (5.55-0ubuntu2) hirsute; urgency=medium
>
>    * Added patches from the Raspberry Pi Foundation
>      - d/p/raspi-bcm43xx-load-firmware.patch
>      - d/p/raspi-bcm43xx-3wire.patch
>      - d/p/raspi-cypress-305-bdaddr.patch
>    * These patches fix Bluetooth operation on the Pi 400 (LP: #1903048)
>
>   -- Dave Jones <dave.jones at canonical.com>  Thu, 05 Nov 2020 13:39:07
> +0000
>
> ** Changed in: bluez (Ubuntu Hirsute)
>         Status: Fix Committed => Fix Released
>

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https://bugs.launchpad.net/bugs/1903048

Title:
  [SRU] Bluetooth won't activate on the pi 400

Status in bluez package in Ubuntu:
  Fix Released
Status in bluez source package in Hirsute:
  Fix Released

Bug description:
  [Impact]

  Without these patches, Bluetooth is inoperable on the recently
  released Raspberry Pi 400.

  [Test Case]

  * Boot the Ubuntu Desktop for Pi image on a Pi 400.
  * Start the Settings application and switch to the Bluetooth tab
  * Verify that Bluetooth is not enabled and attempting to activate it fails
  * sudo add-apt-repository ppa:waveform/pi-bluetooth
  * sudo apt update
  * sudo apt install bluez
  * sudo reboot
  * Start the Settings application and switch to the Bluetooth tab
  * Verify that Bluetooth is active and that Bluetooth devices (e.g. mice, mobile phones, headphones, etc.) can connect and operate correctly 

  [Regression Potential]

  Extremely low (on groovy in particular, this has the same version of
  bluez as hirsute). The only significant risk is to non-Pi platforms or
  dongles which also use the Broadcom 43xx (or Cypress 305) chips for
  Bluetooth which might be inadvertently affected by these patches.

  [Original Description]

  The new Pi 400 has a slightly different Wifi/BT chip to the Pi4.
  Whilst wifi works happily, Bluetooth fails to operate. This doesn't
  appear to be an issue with either the firmware (the latest versions
  from upstream Raspbian have been tried), or the kernel (a known-good
  raspi kernel has been tested under Ubuntu), but with Bluez itself.
  Specifically, tracing the initialization with btmon on Raspbian and
  Ubuntu, the stack consistently fails when attempting to "Set Default
  PHY" on the latter. Curiously, under Ubuntu the adapter also appears
  to lack a MAC address.

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