That backtracr is something completely different. So what is this about, the locking failure or the resolver? Resolver failures are probably not going to be fixable, or only with guessing and extreme caution.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1770224 Title: unattended-upgrades crashes with: apt_pkg.Error: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages Status in apt package in Ubuntu: New Bug description: It seems pkgProblemResolver is hitting an internal bug quite frequently with latest u-u: Traceback (most recent call last): File "/usr/bin/unattended-upgrade", line 1927, in <module> sys.exit(main(options)) File "/usr/bin/unattended-upgrade", line 1822, in main options.dry_run) File "/usr/bin/unattended-upgrade", line 1399, in do_auto_remove res, error = cache_commit(cache, logfile_dpkg, verbose) File "/usr/bin/unattended-upgrade", line 513, in cache_commit res = cache.commit(install_progress=iprogress) File "/usr/lib/python3/dist-packages/apt/cache.py", line 565, in commit res = self._fetch_archives(fetcher, pm) File "/usr/lib/python3/dist-packages/apt/cache.py", line 385, in _fetch_archives raise LockFailedException("Failed to lock %s" % lockfile) apt.cache.LockFailedException: Failed to lock /var/cache/apt/archives/lock I believe this should be fixed in apt rather than just catching it in u-u. More info: The Ubuntu Error Tracker has been receiving reports about a problem regarding unattended-upgrades. This problem was most recently seen with package version 1.1ubuntu1, the problem page at https://errors.ubuntu.com/problem/49de8d44b4ceccb27b66921173ee7e837e7a1e54 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports. If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1770224/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
