DPI scaling issue with AutoCAD 2012

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You are running an Autodesk 2012 product on a system whose screen resolution is scaled to 150% and you are seeing abnormalities in the standard buttons and ribbon controls including:

A detached and floating red A (upper left corner)
The X button to close AutoCAD (upper right corner) does not work
Many ribbon controls do not perform as expected

DPI scaling issue with AutoCAD 2012 - the interface of AutoCAD could be meesed up if screen scaling is not at 100%.

Solution

Autodesk 2012 products may exhibit these issues on systems where the screen scaling is set to 150%. You can work around this by setting the screen resolution of your system to 96 DPI (or 100%).

Alternative solution

An alternative method is to right-click on the AutoCAD icon, select the Properties settings, and select the option to "Disable display scaling on high DPI settings".

When I tried this the Compatibility Settings where disabled and grayed out. I found that this only works for 32-bit programs and not for 64-bit programs. Too bad.