Ubuntu
ubuntu-release-upgrader package

  1. Bug #1470577
  2. Comment #2

Comment 2 for bug 1470577

Revision history for this message
Brian Murray (brian-murray) wrote :

There were a ton of errors contacting the us.archive.ubuntu.com mirror during your upgrade.

2015-06-30 21:20:09,283 ERROR IOError in cache.commit(): 'Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/b/base-files/base-files_7.2ubuntu9_i386.deb Could not resolve 'us.archive.ubuntu.com'
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/b/bash/bash_4.3-11ubuntu2_i386.deb Could not resolve 'us.archive.ubuntu.com'
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/s/systemd/libsystemd0_219-7ubuntu6_i386.deb Could not resolve 'us.archive.ubuntu.com'
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/libc/libcap2/libcap2_2.24-6_i386.deb Could not resolve 'us.archive.ubuntu.com'

I would try logging in via a different desktop session and try running update-manager.