query: Cannot update / install anything
positive_passages.docid: 249
positive_passages.text: How do I fix this "E: Type '*' is not known on line * in source list ..." update error?
negative_passages.docid: 60199
negative_passages.text: FGLRX won't install: Unable to correct problems, you have held broken packages
negative_passages.docid: 62476
negative_passages.text: E: Package '' has no installation candidate
negative_passages.docid: 123634
negative_passages.text: Can't update Xcode
negative_passages.docid: 10023
negative_passages.text: 'Some index files failed to download' while updating
negative_passages.docid: 58487
negative_passages.text: How do I destroy my installation? (render it unbootable?)
negative_passages.docid: 80899
negative_passages.text: "no public key available" on apt-get update
negative_passages.docid: 11579
negative_passages.text: Broken dependencies after upgrade
negative_passages.docid: 30233
negative_passages.text: How can I fix/install/reinstall grub?
negative_passages.docid: 120161
negative_passages.text: Ubuntu 19.04 problems install upgrades
negative_passages.docid: 73357
negative_passages.text: Every package "has no installation candidate"
negative_passages.docid: 86777
negative_passages.text: Distribution upgrade problem "No new release found"
negative_passages.docid: 19361
negative_passages.text: Can't update because the word prox* is blocked
negative_passages.docid: 15575
negative_passages.text: Ubuntu stuck/freeze on install
negative_passages.docid: 48809
negative_passages.text: "The upgrade has aborted" error, how to proceed?
negative_passages.docid: 140371
negative_passages.text: Update Ubuntu 10.04
negative_passages.docid: 30754
negative_passages.text: Cannot update: "No available releases found"