I bought an Bluetooth adapter that says it is Linux compatible. The Bluetooth rune shows in the tool bar I open the Bluetooth devices window via the rune and it shows the device I wish to connect to. When I tell it to connect as serial device the bubble simply bounces back and forth forever.
Using Ubuntu 20.04 LTS.
lsub
Bus 002 Device 003: ID 19ff:0239 Dynex BCM20702A0
EDIT
I updated all updates and now I get a window on log-in saying "system error" about Bluetooth tray. I went syslog to find more details.
Log says: firmware patch file not found.
[ 12.340873] Bluetooth: Core ver 2.22
[ 12.340901] Bluetooth: HCI device and connection manager initialized
[ 12.340906] Bluetooth: HCI socket layer initialized
[ 12.340907] Bluetooth: L2CAP socket layer initialized
[ 12.340912] Bluetooth: SCO socket layer initialized
[ 12.672664] usbcore: registered new interface driver btusb
[ 12.799986] Bluetooth: hci0: BCM: chip id 73
[ 12.810958] Bluetooth: hci0: BCM: features 0x07
[ 12.850090] Bluetooth: hci0: godbless
[ 12.850097] Bluetooth: hci0: BCM20702B0 (002.001.014) build 0607
[ 13.054492] Bluetooth: hci0: BCM: firmware Patch file not found, tried:
[ 13.054540] Bluetooth: hci0: BCM: 'brcm/BCM20702B0-19ff-0239.hcd'
[ 13.054572] Bluetooth: hci0: BCM: 'brcm/BCM-19ff-0239.hcd'
[ 25.267365] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 25.267368] Bluetooth: BNEP filters: protocol multicast
[ 25.267373] Bluetooth: BNEP socket layer initialized
[ 41.793203] Bluetooth: RFCOMM TTY layer initialized
[ 41.793210] Bluetooth: RFCOMM socket layer initialized
[ 41.793219] Bluetooth: RFCOMM ver 1.11
Edit again
I downloaded the files as suggested and the log message about missing file is gone, however my device still will not connect.
There is now two Bluetooth runes in the tray.