Hi there, same issue occured to my laptop, my system is ubuntu 20.04 LTS, kernal 5.8.0-44-generic and up-to-date packages. I would like post detailed message relevent: yindongshan@yindongshan-Precision-5540:~$ dmesg | grep Bluetooth [ 3.710446] Bluetooth: Core ver 2.22 [ 3.710475] Bluetooth: HCI device and connection manager initialized [ 3.710479] Bluetooth: HCI socket layer initialized [ 3.710481] Bluetooth: L2CAP socket layer initialized [ 3.710483] Bluetooth: SCO socket layer initialized [ 3.725865] Bluetooth: hci0: Bootloader revision 0.3 build 0 week 24 2017 [ 3.727020] Bluetooth: hci0: Device revision is 1 [ 3.727021] Bluetooth: hci0: Secure boot is enabled [ 3.727021] Bluetooth: hci0: OTP lock is enabled [ 3.727021] Bluetooth: hci0: API lock is enabled [ 3.727022] Bluetooth: hci0: Debug lock is disabled [ 3.727023] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 [ 3.728444] Bluetooth: hci0: Found device firmware: intel/ibt-20-1-3.sfi [ 4.079305] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 4.079306] Bluetooth: BNEP filters: protocol multicast [ 4.079309] Bluetooth: BNEP socket layer initialized [ 4.546081] Bluetooth: hci0: sending frame failed (-19) [ 6.547251] Bluetooth: hci0: command 0xfc09 tx timeout [ 14.771246] Bluetooth: hci0: Failed to send firmware data (-110) [ 14.771353] Bluetooth: hci0: sending frame failed (-19) [ 14.771423] Bluetooth: hci0: Intel reset sent to retry FW download what's more, even after I boot into safe mode, my laptop won't suspend after lid was closed. hope help or hints could come soon.
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