** Description changed: + [Impact] + Lazy imports made update-manager crash when an update-manager + update changed the backend API and an updated incompatible backend + was loaded to the not updated running update-manager process. + + The issue causes crashes upon update-manager updates harming the upgrade + experience for users. + + The fix avoids lazy loading of the backend modules but still honors the + backend selection options. + + [Test Case] + + 1. Start with a fully upgraded system and downgrade a few packages to let u-m upgrade them: + $ sudo eatmydata apt install -y --allow-downgrades gnome-software=3.28.1-0ubuntu4 gnome-software-common=3.28.1-0ubuntu4 + + 2. Start u-m with: + $ update-manager --no-update + + 3. Make a syntax error in /usr/lib/python3/dist- + packages/UpdateManager/backend/InstallBackendAptdaemon.py + + 4. Press "Install Now" on u-m GUI. + The fixed u-m will successfully perform the installation, the unfixed one will fail with SyntaxError. + + [Regression Potential] + + Wrong changes to the backend import/selection logic could make u-m + unable to find the available backends, but in my testing the fixed + version could properly find both aptdaemon and synaptic when they were + present. + + [Original Bug Text] + Traceback (most recent call last): - File "/usr/lib/python3/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 242, in _on_finished - trans_failed=trans_failed) + File "/usr/lib/python3/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 242, in _on_finished + trans_failed=trans_failed) TypeError: _action_done() got an unexpected keyword argument 'trans_failed'
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1795898 Title: TypeError: _action_done() got an unexpected keyword argument 'trans_failed' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1795898/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
