I finally got this fixed, by deleting almost every hidden file and folder in my home folder.
This situation has recurred 3 times in the last 4 months. I think it happens after opening Chromium with temporary profile (in order to log into a different gmail account). It seems like after I do that a few times, Chromium becomes corrupted in the manner described in this bug report. I wish I know more about why this happens, but for now that all the hint I can recall. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759590 Title: Chromium-Browser Won't Sustain My Profile To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1759590/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs