It was to receive update for kernel via ubuntu software and error message soon after prevented the update was installed.
Bug related in https://bugs.launchpad.net/ubuntu/xenial/+source/linux/+bug/1582431 ** Summary changed: - kernel + kernel update on May 16 - BUG the installation -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1582530 Title: kernel update on May 16 - BUG the installation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1582530/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs