Display Port Troubles
Hey guys, I am new here but I am very heavily involved with testing new technology and creating ratings on them for others. Not only do I do a lot of reviews, I evaluate products on the market to make sure they work as advertised and work closely with the vendors to fix issues and to make the product better. I mainly deal with computer and server hardware compatibility with peripheral devices such as video switches, extenders, KVM switches and video converters.
Recently I bought an ATI Display Port video card, PCIe-16 2.0 of course and also got a Dell Display Port monitor and NEC Display Port monitor for testing. What I noticed is that anytime the computer is up and running and sending active video out to the display, I can physically disconnect the display port video cable and reapply it, but cannot get the video back. The only way to get the video signal back is to power cycle the computer with the monitor connected. If I boot the PC up without the monitor attached, but then reattach it several minutes later, I still don't have video.
Basically what I am saying is anytime you disconnect the display, you need to reboot the computer to get your video signal back. If the computer goes into power save mode which causes the video signal to hibernate, the only way to get the video back is to restart the computer.
My question to the community is: Have any of you experienced this and what information do you have on it through your experience?
I have 5 more display port video cards on order for testing to see if it does the same thing. I think it may be an ATI thing with Display Port but figured this would be a great place to get some feedback.
If you need more information or if you are curious about some of my results, please let me know.