query: APT unable to update after release upgrade
positive_passages.docid: 120
positive_passages.text: How do I restore the default repositories?
negative_passages.docid: 43579
negative_passages.text: I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
negative_passages.docid: 109624
negative_passages.text: How do I tell apt to never upgrade a particular package?
negative_passages.docid: 149984
negative_passages.text: Can't update or install anything. Ubuntu 3.11.0.14
negative_passages.docid: 118978
negative_passages.text: Not all updates can be installed: partial upgrade
negative_passages.docid: 35931
negative_passages.text: Apt update error - "An error occurred during the signature verification" (Chrome)
negative_passages.docid: 50810
negative_passages.text: No upgrade available for 19.04 from 18.10
negative_passages.docid: 80233
negative_passages.text: Upgrade to 20.04 from 19.10 isn't available
negative_passages.docid: 27769
negative_passages.text: Problem with IPv6 sudo apt-get update/upgrade
negative_passages.docid: 127196
negative_passages.text: "Error processing package" - apt upgrade cannot run due to package configuration errors
negative_passages.docid: 123413
negative_passages.text: Will apt-get dist-upgrade upgrade my system to a newer version?
negative_passages.docid: 43917
negative_passages.text: What is the difference between apt-get update and upgrade?
negative_passages.docid: 93574
negative_passages.text: E: Some index files failed to download. They have been ignored, or old ones used instead after apt-get update
negative_passages.docid: 42634
negative_passages.text: How do I upgrade to the development release (aka. Ubuntu+1)?
negative_passages.docid: 122588
negative_passages.text: Can't connect to ubuntu archive when using apt-get update
negative_passages.docid: 13720
negative_passages.text: apt-get update fails to fetch files, “Temporary failure resolving …” error
negative_passages.docid: 96696
negative_passages.text: timeout errors in apt-get update/install