Using Thorium Reader to Read DRM protected Readium lcpl books from archive.org, Linux Ubuntu

OS: Ubuntu 25.10

App: Files (Nautilus)

Issue:

For eternity (I've been using Ubuntu Linux exclusively for 12 years) I was able to right-click on a folder in Files and select "Open in Terminal." And then suddenly, I was not able to do that. Not being able to pinpoint anything that I had done to cause the problem, I turned to Gemini for an answer. 

Diagnosis: 

After a considerable amount of back and forth with Gemini (which is unusual), I THOUGHT narrowed the cause down to my having downloaded the New "Console" terminal, but kept the old term terminal as my default. Thus, I had a problem of the two terminals competing for default. As it turns out, something had changed in Nautilus, it seems. Don't ask me what.

The Fix: NOT! (but in include this step here, because you probably should do this, too.)

I uninstalled my old Terminal, which, among other things, was blocking my switching from the old Terminal to Console Terminal, using the Console settings Preference for Default. Second, I opened the Console Terminal and went to Preferences and set Console as my default Terminal. But that did not solve the problem.

The Fix Fix:

I consulted with Gemini AI. In their answer (a quite long one), I found:

1. The "Right-Click Empty Space" Rule

In the new version of Nautilus, the "Open in Terminal" option often only appears when you right-click the background of a folder, rather than right-clicking the folder icon itself.

• Grid View: Right-click any empty space between icons.

• List View: Right-click the empty space at the bottom of the list or the narrow margin on the left side.

So, my issue really was not an issue to begin with, though I have no earthly idea why the Nautilus programmers decided I can no longer click on the Folder icon itself to invoke "Open with Terminal". 

Oh well. ##

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