My secondary display flashes on and off
Hi!
I have my secondary display connected (Apple Cinema 20 inch) using an active dvi adaptor. The display keeps flashing on and off. One moment I see my home screen and the other the screen is black. The backlight is stil on btw. It is not the display itself, the display is good and so is the power supply.
At first I tried all the basic stuff like rebooting, pulling the power cord out but none of those things worked. I have tried resetting the PRAM, but that did’t work. I also booted into safemode, and there the display worked just fine. I think it is an OS related problem and I don't know how to solve it, as there is almost no information about this problem.
I have also tried the scaling options for the display, and none of them work.
EDIT: I have added a screenshot. The screen is recognized and I can change all the options.
Any help is appreciated!
Thanks in advance!
Ist dies eine gute Frage?
What have you set in your systems System Preferences > Displays ?? Take a snapshot so we can see Bilder zu einer vorhandenen Frage hinzufügen
von Dan
It seems the only other thing you haven't tried is a different adapter. I would start there. Also, if you have another monitor you can try that can help narrow it down.
von Michael Youngs
Thanks! Can the adaptor be faulty? Even if it works in safemode? The adaptor is new and from Club3d (which is a pretty decent brand I believe).
von Elias