K272HUL DVI ports not detecting signal
I have two K272HUL monitors hooked up to a Gigabyte GTX1060 via DisplayPort on Windows 10. Everything works fine in this configuration, however the video card is starting to fail when under load so it's going to be RMA'd. I replaced the video card with an older GTX555 in the meantime in order to continue using the PC. The GTX555 only has two DVI out and a single HDMI out port.
In this configuration, neither monitor detects a signal; it flashes "No Signal", then goes to sleep for 5-10 seconds before re-awakening to display "No Signal" again. I have verified that the inputs are set correctly to DVI on both monitors and that the cables and the video card works by using different monitors. I also plugged the GTX1060 back in and tried DVI on that one but the symptoms are identical.
Occasionally, I can get one or the other monitor to work if I disconnect all cables from a monitor and let it sit for some time, then plug back in the DVI and power connection. That's fine until trying to connect the second monitor, after which Windows "refreshes" both screens and then neither come back up.
This appears to be some sort of firmware issue in these monitors selecting input modes. Any experience or guidance anyone can offer? Is there a tricky sequence that can make these monitors both work simultaneously? This seems like RMA material, but since DVI is not the mode I anticipate operating these screens in most of the time, I am less inclined to RMA the units.
