Mouse click or selection fails when using Revit and VGA monitor or projector

I recently observed this issue when a presenter in a Lab class could not select a work plane accurately.  He would hover over the correct plane, but when ‘clicking’ the mouse, a different plane would be selected.  Revit 2012 was being used on a laptop, with an external projector plugged in for the presentation.

I have a feeling that this issue is similar to one I have posted about previously, at this link.  Over at Do U Revit, a comprehensive set of comments may prove useful if you are trying to solve this problem.

Some potential fixes (from the abovementioned comments) may be to:

  • swap monitors from left to right in the Windows display properties
  • make the monitor that is running Revit the primary monitor

Of course, if all else fails:

  • run Revit in a single-display configuration if possible to avoid the issue

I have a few other ideas that I have not really tried for 2012, including:

  • make a new Windows user AFTER connecting the extra monitor or projector, then log in as this user and attempt to use Revit.
  • fully reset the UI and Revit registry data AFTER connecting the extra monitor, and then run Revit (risky).

The other important lesson is this – if you are going to be doing a presentation or tutoring session, TEST your proposed configuration prior to the session.  Five minutes of testing can save a lot of embarrassment!

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