Blank Viewports displaying no model objects in paper space layout

Issue

You have set up a number of viewports in your paper space layout, but some of them are displaying blank with no drawing objects. When you preview the plot the model objects are visible in all viewports of the layout. For example you have nineteen viewports in paper space with five displaying blank with no drawing objects.

Solution

This can be caused by the System variable MAXACTVP being set to a low value.

MAXACTVP sets the maximum number of viewports that can be active at one time in a layout. In the example above the reason five viewports were displaying blank was the MAXACTVP system variable was set to a value of 15.

MAXACTVP has no effect on the number of viewports that are plotted.

To revert to the earlier default behavior for the MAXACTVP system variable and enable all viewports to display drawing objects, change the value.

Follow these steps:

1. Type MAXACTVP in the AutoCAD command line.
2. The current value for MAXACTVP will be displayed. For the example above it will be 15.
3. Type the default value of 64 and enter to save.
4. The drawing will regenerate and all the blank viewports will display model objects.