The DiNovo showed a green light, saying it got a connection, but on the laptop, all I could see was the device appearing and very soon disappearing in udev (confirmed with udevadm monitor). I tried to pair it again, many times, and while the pairing seemed to succeed, the device just did not work. I also installed blueman, which indicated the same: when I touched the DiNovo, it connected, and was immediately disconnected. In the system log I got:
bluetoothd: Refusing input device connect: Operation already in progress (114)Ok, so is it trying to connect twice for some odd reason? Where is the state kept? Could I manually fix it?
bluetoothd: Refusing connection from ##:##:##:##:##:##: setup in progress
(bluetoothd:280): GLib-WARNING **: Invalid file descriptor.
Apparently, I could. In the /var/lib/bluetooth/*/ directory I saw several files that seemed to be about the bluetooth settings on my Gentoo. Not knowing anything about how Bluez works, I looked at the files there, to see if I could spot something suspicious. Luckily they were all plain-enough text files, so I did spot something.
The file /var/lib/bluetooth/*/spd had two lines with my DiNovo's device address on it. The first line was a long one, the second line short. Not knowing what I'm doing, I stopped the bluetooth service, removed the short line, and restarted the bluetooth service. Like magic, the DiNovo started working again, connecting automatically. No errors in the system log anymore, either.
I have not used the DiNovo much after the repair yet, remains to be seen if I broke anything, but so far so good. Apparently when I was playing around with the DiNovo, somehow that file got a second entry for the same device, and caused malfunction. Is it my fault or a bug, I do not know. Googling did not give any helpful hints on solving this, so I am recording this note here, hoping it helps someone.
-- A note, barely readable, scratched with a broken SD-card on the wall of a passageway in the huge, monster crawling dungeon they call the Intternets.
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