On one of my rpis, I have recurring connection problems. The connection can
work for hours or even days, but suddenly, the connection stops working.
Typically, the reconnection after a braille display sleep won't work. A
system reboot doesn't solve the problem.

In bluetoothctl, I get the following from info <addr>:

(Please note the Name field. Shouldn't that have been Handy Tech Active
Braille ...

Device 00:07:80:41:1E:B7
        Name: WT12-A
        Alias: WT12-A
        Paired: yes
        Trusted: yes
        Blocked: no
        Connected: no
        LegacyPairing: no
        UUID: Serial Port       (00001101-0000-1000-8000-00805f9b34fb)
        UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information    (00001200-0000-1000-8000-00805f9b34fb)
        Modalias: bluetooth:v0047pF000d0410

Doing connect 00:07:80:41:1E:B7
                Attempting to connect to 00:07:80:41:1E:B7
                Failed to connect: org.bluez.Error.Failed

To fix the problem, I have to remove the device, and then re-pair it.

Any ideas in how to fix this problem?

Thanks and regards, Lars
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