I could connect the keyboard via Bluetooth and make it trust, but no keys worked.
After disconnecting and connecting manually, it didn't work anymore and there was an info:
Code: Select all
Connection Failed: br-connection-create-socket
After a while I used bluedevil-wizard instead of trying to pair it with blueman-applet and it worked

The question is, why? What does bluedevil-wizard do differently than the wizard of blueman-applet?