Resolution Issues on External Monitor

FredS7

Bit poster
I mainly use parallels to run Ubuntu 18 on an external monitor. The monitor is 4K and I have have no major issues with it until today. I came in today and the screen was not running parallels at the right resolution in either full screen or non full screen. The best resolution I can get is 2560x1440 and it looks like crap. I have tried everything seem on different posts.....change display options on mac, on linux host, reinstall parallel tools. Nothing has worked.
 
I mainly use parallels to run Ubuntu 18 on an external monitor. The monitor is 4K and I have have no major issues with it until today. I came in today and the screen was not running parallels at the right resolution in either full screen or non full screen. The best resolution I can get is 2560x1440 and it looks like crap. I have tried everything seem on different posts.....change display options on mac, on linux host, reinstall parallel tools. Nothing has worked.
Hi @FredS7 , Please let us know your Parallels Desktop, Mac OS and linux ubuntu version.
 
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