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

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Daniel van Vugt (vanvugt):

[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
* Enable the -proposed repository for the release (groovy)
* 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.

** Affects: bluez (Ubuntu)
     Importance: High
     Assignee: Dave Jones (waveform)
         Status: Fix Released

** Affects: bluez (Ubuntu Focal)
     Importance: Undecided
     Assignee: William Wilson (jawn-smith)
         Status: In Progress

** Affects: bluez (Ubuntu Groovy)
     Importance: Undecided
         Status: Fix Released

** Affects: bluez (Ubuntu Hirsute)
     Importance: High
     Assignee: Dave Jones (waveform)
         Status: Fix Released


** Tags: fr-901 groovy hirsute patch raspi verification-done verification-done-groovy
-- 
[SRU] Bluetooth won't activate on the pi 400
https://bugs.launchpad.net/bugs/1903048
You received this bug notification because you are a member of Ubuntu Sponsors Team, which is subscribed to the bug report.