Comment 5 for bug 1980473

Same here.
No changes on my side, except of the daily updates && ungrades.
In my case audio 'has left me', which is quite a bore here; with bluetooth being my only audio.
No device available. It doesn't reset:

[ 9.209564] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[ 11.083290] Bluetooth: Core ver 2.22
[ 11.083318] Bluetooth: HCI device and connection manager initialized
[ 11.083322] Bluetooth: HCI socket layer initialized
[ 11.083324] Bluetooth: L2CAP socket layer initialized
[ 11.083328] Bluetooth: SCO socket layer initialized
[ 15.628647] Bluetooth: hci0: command 0x0c03 tx timeout
[ 16.456677] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 16.456681] Bluetooth: BNEP filters: protocol multicast
[ 16.456688] Bluetooth: BNEP socket layer initialized
[ 23.692646] Bluetooth: hci0: sending initial HCI reset command failed (-110)
[ 28.236646] Bluetooth: hci0: command 0x0c03 tx timeout
[ 36.240888] Bluetooth: hci0: sending initial HCI reset command failed (-110)
[ 40.812781] Bluetooth: hci0: command 0x0c03 tx timeout
[ 49.036747] Bluetooth: hci0: sending initial HCI reset command failed (-110)
[ 53.612731] Bluetooth: hci0: command 0x0c03 tx timeout

and so forth.
Rebooted, doesn't help.

dpkg -l | grep blue
ii bluedevil 4:5.18.4.1-0ubuntu1 amd64 KDE Bluetooth stack
ii bluez 5.53-0ubuntu3.6 amd64 Bluetooth tools and daemons
ii bluez-cups 5.53-0ubuntu3.6 amd64 Bluetooth printer driver for CUPS
ii bluez-obexd 5.53-0ubuntu3.6 amd64 bluez obex daemon
ii gir1.2-gnomebluetooth-1.0:amd64 3.34.3-0ubuntu1 amd64 Introspection data for GnomeBluetooth
ii libbluetooth3:amd64 5.53-0ubuntu3.6 amd64 Library to use the BlueZ Linux Bluetooth stack
ii libgnome-bluetooth13:amd64 3.34.3-0ubuntu1 amd64 GNOME Bluetooth tools - support library
ii libkf5bluezqt-data 5.68.0-0ubuntu1 all data files for bluez-qt
ii libkf5bluezqt6:amd64 5.68.0-0ubuntu1 amd64 Qt wrapper for bluez
ii pulseaudio-module-bluetooth 1:13.99.1-1ubuntu3.13 amd64 Bluetooth module for PulseAudio sound server
ii qml-module-org-kde-bluezqt:amd64 5.68.0-0ubuntu1 amd64 QML wrapper for bluez

If you need more, please ask (and no, I can't recompile or stuff).

Thanks in advance,

Uwe