Whenever you connect or disconnect your laptop from the dock and it changes the display resolution, Acrobat displays a large white area on any open PDF.
To turn off the PDF/A viewing mode, do the following steps:
- Go to Acrobat>Edit>Preferences.
- Under Categories, in the Preferences dialog box, select Documents.
- Choose the Never option for View Documents In PDF/A Mode.
- You can switch in or out of PDF/A viewing mode by changing this preference setting.