If there is no rotate option available for displays connected through a dock, check that DisplayLink software is installed.
If the DisplayLink Manager is installed do the rotation through that instead of using the System Preferences: Displays rotate option (which is not available). If this fails, check the DisplayLink software is fully up to date.
I usually write a blog post about once a week. The latest post can be viewed here: Are We the Baddies?: Maybe you should ask yourself: are we the baddies? (posted 2025-11-24 at 17:01:10). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2025-11-06 Democracy v Bureaucracy: It's not left versus right which I am complaining about: it is bureaucracy versus democracy!.
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