Hi, I have two USB Bluetooth controller and connected on same Ubuntu 15.10 PC.(kernel 4.2.0-42) I want to set a connection between them using blueZ 5.35. I verified by hciconfig command hciconfig ------------------------------------------------------------------------------------------------------ hci2: Type: BR/EDR Bus: USB BD Address: 00:1A:7D:DA:71:05 ACL MTU: 310:10 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN RX bytes:6922 acl:12 sco:0 events:171 errors:0 TX bytes:5775 acl:12 sco:0 commands:112 errors:0 hci1: Type: BR/EDR Bus: USB BD Address: 00:1A:7D:DA:71:07 ACL MTU: 310:10 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN RX bytes:2808 acl:13 sco:0 events:155 errors:0 TX bytes:6689 acl:12 sco:0 commands:113 errors:0 ----------------------------------------------------------------------------------------------------------- I opened two shell session for each controller and execute bluetoothctl. when i executed below command then connection established only for 2 second and then it disconnects? [bluetooth]# connect 00:1A:7D:DA:71:05 Attempting to connect to 00:1A:7D:DA:71:05 [CHG] Device 00:1A:7D:DA:71:05 Connected: yes Failed to connect: org.bluez.Error.Failed [CHG] Device 00:1A:7D:DA:71:05 Connected: no Please let me know why it disconnects after 2 seconds? Regards Ajay -- 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