@mrdc76 I also experience this in Lunar. This is the output I get when running `update-manager` from Terminal:
```
$ update-manager
WARNING:root:failed to process /proc/version_signature.
WARNING:root:Failed to parse kernel: 6.3.0-acso
WARNING:root:unable to determine enough kernel information to check livepatch support
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/defer/__init__.py", line 483, in _inline_callbacks
result = gen.throw(excep) ^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 152, in update
trans = yield self.client.update_cache(defer=True) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
```
@mrdc76 I also experience this in Lunar. This is the output I get when running `update-manager` from Terminal: signature. python3/ dist-packages/ defer/_ _init__ .py", line 483, in _inline_callbacks
^ ^^^^^^^ ^^^^^^^ ^ python3/ dist-packages/ UpdateManager/ backend/ InstallBackendA ptdaemon. py", line 152, in update update_ cache(defer= True)
^^ ^^^^^^^ ^^^^^^^ ^^^^^^^ ^^^^^^^ ^^^^^^^ ^^^^^ .DBusException: org.freedesktop .DBus.Error. NoReply: Message recipient disconnected from message bus without replying
```
$ update-manager
WARNING:root:failed to process /proc/version_
WARNING:root:Failed to parse kernel: 6.3.0-acso
WARNING:root:unable to determine enough kernel information to check livepatch support
Traceback (most recent call last):
File "/usr/lib/
result = gen.throw(excep)
File "/usr/lib/
trans = yield self.client.
dbus.exceptions
```