query: cannot uprgade from 19.04 to 19.10 thence to 20
positive_passages.docid: 1520
positive_passages.text: How to install software or upgrade from an old unsupported release?
negative_passages.docid: 76241
negative_passages.text: "no public key available" while upgrading using update-manager
negative_passages.docid: 112955
negative_passages.text: How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
negative_passages.docid: 7580
negative_passages.text: How to safely upgrade from an older Ubuntu version to a newer one?
negative_passages.docid: 134080
negative_passages.text: Still can't upgrade? Is there a new delay?
negative_passages.docid: 57183
negative_passages.text: Problem with upgrading 19.04 to 19.10 "UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte
negative_passages.docid: 64744
negative_passages.text: Restarted computer during update; "the system network service is not compatible with this version"
negative_passages.docid: 144507
negative_passages.text: No facility exists in Update Manager to upgrade to a new version, why?
negative_passages.docid: 19288
negative_passages.text: Update manager doesn't offer an upgrade to the new release
negative_passages.docid: 5877
negative_passages.text: "Failed to fetch" while updating
negative_passages.docid: 9901
negative_passages.text: How to upgrade from 18.10 to 19.10, using the command line?
negative_passages.docid: 150705
negative_passages.text: Error: Refresh failed because resolved configuration is not available
negative_passages.docid: 53291
negative_passages.text: Windows update doesn't progress beyond 0 KB 0%
negative_passages.docid: 129223
negative_passages.text: Ubuntu upgrade from 17.04 to 18.04
negative_passages.docid: 13970
negative_passages.text: Why am I not getting the Ubuntu 18.04 upgrade?
negative_passages.docid: 89856
negative_passages.text: How to resume the interrupted upgrade from 14.10 to 15.04?
negative_passages.docid: 12578
negative_passages.text: How do I upgrade to a newer version of Ubuntu?