Mac Pro 2013 - second display no signal

[verstaerker]

after i wake my mac from sleep mode the second display (Dell 4k on MDP) often gets no signal

the only solution is to restart the mac or unplug the cable from the mac and plug it into another port

wich is very annoying - has anybody similar problems and has any hints for a solution?

 

[ixxx69]

after i wake my mac from sleep mode the second display (Dell 4k on MDP) often gets no signal

the only solution is to restart the mac or unplug the cable from the mac and plug it into another port

wich is very annoying - has anybody similar problems and has any hints for a solution?

Did you already see this thread?

 

[verstaerker]

Did you already see this thread?

no - thank you!
it seems turning off DDC/CI solved the problem - at least the last 3 times i woke up my mac both displays were showing a signal