Environment macOS Big Sur version 11.5
Issue The monitor “blinks” every couple of seconds.
The MacBook Pro is connected to the ThinkPad Thunderbolt 3 Dock Gen1 (Model No: 40AC - DBB9003L1). The monitor is connected to the dock using the Displayport cable. The monitor(s) are configured as “extended”.
Diagnostic Steps Usage with a Windows 10 laptop with the same dock and monitor does not recreate the issue.