CSR seems to be not a real issue.
I have just checked Ubuntu MATE 21.10 on my:
- Lenovo SL500 with Broadcom BCM2045B;
- VAIO F13 with BCM2070;
- Asus UX32A with Intel 6235.
Here BlueMan can't find neither my Logitech M555b Bluetooth mouse nor Sven Bluetooth speaker. But hcitool scan
find them normally:
$ hcitool scan
Scanning ...
A0:E9:DB:20:FF:FF SVEN PS-100BL
00:07:61:FD:FF:FF Logitech Bluetooth Mouse M555b
So it is a bug between BlueMan and Bluez. I have reported it as
Other known bluetooth-related bugs:
Need further investigation.