I am using AOC Q3279VWF monitor (native resolution: 2560 x 1440) and SAPPHIRE RX 580 NITRO+ Special Edition (cable type: DP 1.2, drivers: adrenalin-edition-18.7.1-july19, system: windows 10).
When my whole PC goes to sleep mode for 30+ minutes (when it sleeps only for 1 minute this issue does not occur), then when I wake him up, the resolution changes from 2560 x 1440 to 1024x768.
Then it is enough if I turn off/on the monitor and the resolution is "fixed" (goes back to 2560 x 1440).
Any idea what can this be?
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