Hello! I was trying to use gatttool from the latest BlueZ 4.96 over LE link, but it immediately fails with error message: $ sudo gatttool --adapter=hci0 --device=<BD addr> --primary l2cap_bind: Invalid argument (22) There are no commands sent over HCI (according to hcidump) and nothing is logged in /var/log/syslog as well (bluetoothd is running with -d option). I can use HCI LE commands (e.g. lecc) and successfully connect to the remote LE slave (according to hcidump) and LE is enabled in main.conf. If I try to use gatttool over regular BT (by specifying psm), gatttool initiates the connection (but eventually fails since I'm trying to connect to the single mode LE device on the other end). It looks like I'm missing something fundamental. Other posts suggest that gatttool is working over LE - is that correct? Any help would be much appreciated. Thanks in advance! With best regards, Dmitry... [e-mail: dmitry.shipilov@xxxxxxxxx] -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html