Issue about multiscreen with HP DOCKSTATION G5

[SDITECH]

Hello team, i open this issue because, i used an HP G5 Dockstation in my company.

But i have an issue with my second monitor

My configuration

HP elitebook G9 st creen -->USB C PORT --> DOCKSTATION G5

                                                                                                      --> DP port to VGA-->24'' thinkvision lenovo 2nd screen

                                                                                                      --> DP port to VGA-->22'' thinkvision lenovo third screen   

The second screen is detected on Windows 

but i dont have signal the screen is in off state

and i have changed the screen with 24"" lenovo i have signal but the image is deformed as a wave

i have changed the port in the back of DOCKSTATION G5 but is the same screen "3" have issue 

i have rebooted my computer but is same same.

do you have an solution to resolve my issue

[SDITECH · Accepted solution]

Issue Closed

the resolution is really simple

I need to verify in screen configuration with right click on desktop and select extend screen for reactivating the screen