Comment 11 for bug 1717796

Many bluetooth HID keyboard profile devices disconnect on idle to save power, I have two such devices:

Logitech Y-X5A77 keyboard

Sony PS3 bluetooth remote control

When the device disconnects on idle the g_io_channels get disconnected

bluetoothd[3167]: profiles/input/device.c:ctrl_watch_cb() Device 00:07:61:F6:C9:7D disconnected
bluetoothd[3167]: profiles/input/device.c:intr_watch_cb() Device 00:07:61:F6:C9:7D disconnected

But, something isn't closed properly (possibly g_io_add_watch) since bluetoothd then spins at 100% CPU in g_main_loop_run() until the device reconnects, at which point every works normally again until the device next idles.

This bug has been present for at least 2 years, I'm certain it's much longer:

https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1717796