[Bug 1901272] Re: Can't connect Bluetooth devices after reboot - Ubuntu 20.10 on Raspberry Pi 4

[Wayne Schroeder]

I also just installed on a pi 4 and had the same issue -- devices worked but would not persist across reboots, and then successive re-adds were... strange, unreliable, etc.  Lots of "it appears to work but doesn't."  Tried the PPA packages and it worked at first, but was seriously inconsistent at adding and removing devices.  I downgraded the PPA packages back to originals and still couldn't reliably add devices.  I re-upgraded to PPA packages and the bluetooth was essentially working less than ever.  Since it felt like a software issue, like configurations and "sessions" were being munged, I killed BT, searched around and wiped out /var/lib/bluetooth/* (which appeared to have multiple base addresses???) and then I was able to clean out gnome's ui and re-add and things now persist across reboots.  
  
To me, this seems like the PPA fixes the issue, but the original packages created a state where there were multiple stale / conflicting states in /var/lib/bluetooth that you must disabled bt, clean, then re-enable / reboot and things work.  It almost feels like the original packages had the BT adapter changing addresses each boot or similar.

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Title:
  Can't connect Bluetooth devices after reboot - Ubuntu 20.10 on
  Raspberry Pi 4

Status in bluez package in Ubuntu:
  Incomplete
Status in linux-raspi package in Ubuntu:
  Incomplete
Status in pi-bluetooth package in Ubuntu:
  Confirmed
Status in bluez source package in Groovy:
  Incomplete
Status in linux-raspi source package in Groovy:
  Incomplete
Status in pi-bluetooth source package in Groovy:
  New

Bug description:
  Raspberry pi 4 4Gb ram
  Ubuntu desktop 20.10 64 bit
  After reboot no Bluetooth devices connect, scanning Bluetooth devices works, results with same device name (duplicated and with not set up status).
  Sometimes after several reboots it works.
  If I use power off and cycle power then it works fine each time.

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