I have a RX 5700 XT (Gigabyte Gaming OC) and a DVI display connected to one of the three DisplayPorts via a DisplayPort to DVI adapter (from HP Inc.).
With driver 20.4.1 in Windows 10 I can sleep and wake the computer two times fine, but the third time I get no video on my display and the computer seems to crash (can't lit up caps-lock on the keyboard) requiring me to force restart.
I asked a guy on a different forum if he could reproduce this on his hardware, also connecting a DVI display via a DisplayPort to DVI adapter and he could – same thing there, so it seems it reproduces consistently not only for me.
We should be able to use an older DVI display with the RX 5700 XT, right?
I haven't tried using the HDMI port with the DVI dispay, but I also need that port for connecting to a TV, so not really an option.
It seems fixed since I installed the Windows 10 version 2004 (May 2020 update) and Adrenalin driver 20.5.1! Not sure which of them (maybe both?) is responsible for the fix, but it seems there's no more instabilities for me when waking from sleep.