many users had been reported the same blanking video issues for years, and most cases had been happened to with Apple silicon MB or MBP . It's proofed that had been caused by the firmware of CalDigit docking station.
Blank screen issues: CalDigit TS3+ and CalDigit TS4 docking station with MBP M1/M2/M3 ...etc.
Solution: Monitor setting DP 1.4 changed to DP1.2 .
for monitors without the DP version setting, then you need to turn off -on the monitor or unplug/replug the monitor.
https://discussions.apple.com/thread/254605412?sortBy=best