System hangs on game start

Really odd problem.
All games worked fine, not many at all just a couple of the old classic from Blizzard - StartCraft, WarCraft
Replaced old monitor with a new larger one.
On attempt to launch a game system hang, the only way to bring it back is to force turn off.
So in my case on Start a game a blizzard launcher shows up and there is a button to actually start a game, but instead a black screen, mouse & keyboard - no response.

For the sake of an experiment tried some games via Steam - launched fine.
glxgears tool works fine as well.
System is up to date.

Here is lutris issue report
The game has no logs - just blank.

Please advise

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