Deja Dup Requires Computer Hostname

I’ve used DejaDup for close to 15 years, backing up to an external USB silicon drive. My OS is Debian. Was using Ver. 12 (Bookworm). Yesterday I upgraded to Ver. 13 (Trixie). Fail. No desktop. Reinstalled OS Ver. 13 to bare silicon. Re-installed Deja Dup (called backups by Deb packagers). Called Deja to the desktop. Requested Restore. Deja says: “No files found”, at either Deja Dup or Local Folder. Then I recalled that in the distress of making a new OS, I used a different hostname that on the previous installation. I don’t recall the hostname on it either.
I have the backup set password encrypted. I know the password. Can I read the manifest (or other file) to find the former hostname?

Thank you for your time.

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Hello! Sorry that Deja Dup is giving you troubles.

First: hostname shouldn’t matter - we can restore from any hostname. There is a hostname check when making a new snapshot, but it’s only advisory and is sort of a “did you mean to do this?” check.

So - maybe you pointed at the wrong folder? I.e. Deja Dup isn’t seeing your backup files?

There is also this document that might help - it talks about manually recovering using command line tools: Manual Restore · Wiki · World / Déjà Dup Backups · GitLab

Thank you for such a fast response time.
I cannot explain what has happened. Today, calling Deja-Dup to my Desktop, I selected Restore. Again on first clicking the Deja Dup option in the drop down menu, it returned a files not found. Then clicking back to the Backups page (window?), I again selected Restore to try local folder. This time, I was presented with an icon to browse folders. Doing that, and trying restore failed with no files found. But having seen the duplicity named files, I tried the local folder, again! When I had the external files in a window manager, I still could not run the restore, but on the 3rd try, I brought up the external drive (USB) and doing Ctrl-A, the window manager folder selected all those duplicity named files. Then, going back to the drop down menu and calling Deja Dup as the location worked. It showed the correct backup date. It is now restoring to the original locations!
So, somehow or other, Mr. Terry, you have a magic touch in your script fu and I’m so grateful for the support this time and over the years you have given me.
Can I send you some $ somehow? Or if not to you, to Gnome.org or your choosing, please.

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Yay!

Thanks for your kind words. I do have a donation page for Deja Dup here: https://liberapay.com/DejaDup

GNOME is also a great choice: https://donate.gnome.org/

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