Why do two monitors lose signal?

Question

Iron

Always worked on two monitors, everything was fine, one 4:3 monitor with a VGA input is connected via a digital VGA-> HDMI converter, the second 16:9 monitor has an HDMI adapter plugged into the DVI-D monitor input and connected to the computer via an HDMI cable (t .e. two HDMIs are plugged into the vidyuhu). One day I came home and found that the DVI-D input on the second monitor did not work (I tried different cables, with and without adapters). But he has a second VGA input, connected a cable to it and through a digital VGA-> HDMI converter (which he took from the first monitor) to the computer. And the first connected through a digital converter VGA-> DVI-D. If you get confused, in short, there are two monitors that have only a VGA input, connected via digital converters, one VGA-> HDMI, the other VGA-> DVI-D. After some time of work, the signal is lost on two monitors at once, reboot helps. It was not possible to identify a pattern, the temperature of the vidyuhi is normal, the problem persists on both Ubuntu and Windows. At 16:9, the frequency is 60Hz, at 4:3, the frequency is 60.02Hz, somewhere I heard the opinion that the difference in frequencies is not good, although everything worked fine before. Individual monitors work fine.

Answer 1

The problem is the same as the author's. The only difference is that I have 1 monitor dp-dp, the second is already vga-hdmi through an adapter. The problem is observed only with the current card (amd rx580), I tried to connect to nvidia 1080 - everything works fine.

Answer 2

with current card (amd rx580)

Now everything is clear! The fact is that I also have the RX580, 5 minutes ago I stuck my old Radeon HD7880, while the flight is normal