Bluetooth saves SOME data in cache - for example "discovered devices" hence OS boot process contains devices not necessarily actually found during next OS reboot. ... That how it works in Linux Ubuntu and if the application "scans " for Bluetooth devices it will include cached data. That how it work using Qt development software. What would it take to modify Linux kernel to extend this cache function ( in Linux)
to ACTIVATE cached Bluetooth devices ,if they were active when cached ?
Since Linux actually use "BlueZ" library and such library further current and future development does not exist - is this up to the Linux developers? If so - who to contact ?

 

https://www.bluez.org/contact/

 

We need a Check Up from the Neck Up. Can you translate to human English?

 

https://www.bluez.org/contact/

...and this is dead end... and still a question - "who is on first?" - is the job maintaining / modifying Bluetooth an OS developers job or BlueZ?


Contact

getting in contact with the developers
The parts of the Linux Bluetooth stack are written by many people and it is not the job of just one single person. The credits page shows everyone who has contributed to BlueZ.
If you want to get in contact with the developers, please write to the developer mailing list and never write to them directly.
Slack
Join our slack workspace.
IRC
Aditionally there is a IRC channel available on oftc.net where you can find developers and other users of BlueZ:

• #bluez (development related topics)

community for the end users
For people who want to use the Linux Bluetooth stack and have problems or basic question, they can post them to the user mailing list. But before you start posting you should look at the FAQ and the mailing list archives and check, if your problem is already solved or your question was already answered.
help on this project
This project is based on the work of its contributers, but even non-programmers can help in making progress. There exists always pieces of hardware that are not supported, because non of the core developers had access to it for testing. So donations in form of hardware or simply in form of money are really helpful.