Public bug reported: Trying to update to Ubuntu 15.04 to Ubuntu 15.10 update-manager GUI silently fails or I constantly receive "No new release found" from command-line acting as root user.
In /etc/update-manager/release-upgrades I correctly have "Prompt=normal" Attempted programs used: 1) update-manger (GUI, non-root) 2) update-manager -d (CLI/GUI, non-root) 3) sudo update-manager -d (CLI) 3) sudo do-release-manager -d (CLI) GUI launched as non-root prompts for a new release (update- manager1.png), but as soon as prompted to log to root (update- manager2.png) it fails silently. GUI launched as root *doesn't* prompt for new release. WORKAROUND: Only working mean to upgrade is by command line with non-root "do-release-manager", which correctly reports the available release. TROUBLESHOOTING: Debugging do-release-upgrade[1][2][3] led me to the following discovery: in MetaRelease.py[4] root succeeds in "opening" the non-existing file "/var/lib/update-manager/meta-release-development", leading to timeout exception while trying to download the remote file[6] checking for changes at line 330. Instead non-root fails trying to access meta-release-development and fallabacks to a file in the home directory[7]. Downloading at line 330 succeeds and the main script can continue. meta-release-development[5] in my system wasn't present. This is probably a LTS system switched to non-LTS at some point. Everything else seems to be working. STEPS TO REPRODUCE: - In a 15.04 system, delete system meta-release-development[5], if present; - Try to upgrade as a root user (GUI or CLI). PROPOSED SOLUTION: Better handle non existing meta-release-development[5] file as root in MetaRelease.py[4]. VERSIONS INFO: Description: Ubuntu 15.04 Release: 15.04 ubuntu-release-upgrader-core: Installed: 1:15.04.14.3 Candidate: 1:15.04.14.3 [1] /usr/bin/do-release-upgrade [2]debug-do-release-upgrade-root.png [3] debug-do-release-upgrade-nonroot.png [4] /usr/lib/python3/dist-packages/UpdateManager/Core/MetaRelease.py [5] /var/lib/update-manager/meta-release-development [6] http://changelogs.ubuntu.com/meta-release-development [7] ~/.cache/update-manager-core/meta-release ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576746 Title: Can't launch do-release-upgrade as root (No new release found) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1576746/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
