Dell D6000 no displaylink-enabled display detected

[jayddup]

Hello

I'm using MacBook Air M1 version.
I bought D6000 because I felt the need for a dual monitor.
The D6000 operates normally in a window environment.

The current environment is as follows.
MacOS Monterey 12.2.1
D6000 The latest firmware version.
Displaylink manager 1.6.1 (In security and privacy, it is set for screen records.)

Out of the two MacBook air ports,
Port 1 : connected the first monitor using the C to DP cable.
Port 2 : connected D6000 in type C and connected it to the second monitor in D6000.

​

The monitor connected to port 1 (C to DP) normally outputs on screen,
Connections using Displaylink cannot be output on the screen.
It is not even recognized by Displaylink Manager.

When MacBook Air is completely shut down and rebooted, the monitor connected to DisplayLink is output normally on the MacBook login screen.

After logging in, the monitor connected to the display link does not recognize it again.

Is there anyone who can tell me how to do it?
It's so uncomfortable working...
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I solved this problem.
The problem was the bitdefender(vaccine) installed on my MacBook Air
When I delete bitdefender, it works normally.

[kroumvud]

I have the same problem.

[kroumvud]

Any suggestions why DP not working?