Recently I deleted Personal vm keyring, in attempting to fix a printer problem. Unfortunately I think I also inadvertently deleted (I think) a Vivaldi browser entry in the keyring. I no longer have the ability to save everyday passwords in the Vivaldi browser. Vivaldi behaves as normal in other app vm’s, for which I did not delete the keyrings. I have the Bookmarks backed up and I keep regular system backups. So I could just reinstall my Personal vm I guess. But I’m hoping there is a quick fix for adding Vivaldi back into the keyring for passwords. In the settings for Vivaldi, it says no passwords are saved. If I enter a username and password for a site, it does give me the option supposedly to add them to the browser, but they either don’t save or are inaccessible afterward.
Try close browser and run:
mv ~/.config/vivaldi/Default/Login\ Data ~/.config/vivaldi/Default/Login\ Data.bak
Woohoo! Thank you Tommy! Back up and saving.