query: Ubuntu unable to update and upgrade to 14.04: GPG Error
positive_passages.docid: 14028
positive_passages.text: GPG Error while downloading software: "Clearsigned file isn't valid, got 'NODATA'"
negative_passages.docid: 56150
negative_passages.text: Can't upgrade/update ubuntu 18.04 as apt/dpkg error is showing up
negative_passages.docid: 112602
negative_passages.text: Unable to download updates from extensions.gnome.org
negative_passages.docid: 102747
negative_passages.text: Debian 9, APT, and "GPG error: ... InRelease: The following signatures were invalid:"
negative_passages.docid: 149984
negative_passages.text: Can't update or install anything. Ubuntu 3.11.0.14
negative_passages.docid: 12368
negative_passages.text: A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
negative_passages.docid: 115421
negative_passages.text: Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
negative_passages.docid: 100494
negative_passages.text: Update Manager asking me to update kernel but apt-get upgrade does not?
negative_passages.docid: 6105
negative_passages.text: What is the easiest way to resolve apt-get BADSIG GPG errors?
negative_passages.docid: 123455
negative_passages.text: Unable to update Node JS - keeps returning to old version [Ubuntu 15.04]
negative_passages.docid: 121003
negative_passages.text: GPG error: The following signatures couldn't be verified because the public key is not available
negative_passages.docid: 4305
negative_passages.text: How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
negative_passages.docid: 43579
negative_passages.text: I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
negative_passages.docid: 74990
negative_passages.text: Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
negative_passages.docid: 46720
negative_passages.text: sudo apt update error: "Release file is not yet valid"
negative_passages.docid: 90937
negative_passages.text: apt-get update errors
negative_passages.docid: 85943
negative_passages.text: Can't update or install apps on Ubuntu Touch