Public bug reported: Looking at the persistent live Ubuntu 16.04 LTS system - the Software & Updates screen / Update - I notice, that Automatic updates is set to 'Download and install automatically'. This is bad in a persistent live system.
After leaving the persistent live Ubuntu 16.04 LTS system running overnight, I found that it had performed an automatic upgrade: df revealed that the content in casper-rw had increased to 1.6 GiB. It was a surprise that the persistent live system started an automatic upgrade. This is not caused by the installer (mkusb), because the files controlling those actions are not touched. Instead it is caused by a change of the default action, when there are security updates. And the survey indicates that this default setting is different between the flavours and versions of Ubuntu. Lubuntu keeps the setting 'Display immediately', while the other tested flavours change it from 14.04 LTS to 16.04 LTS. Until this is resolved, it is a good idea to disable unattended-upgrades manually, but above all, to take regular backups, when you use a persistent live system. The survey is described in this link to the Ubuntu Forums: https://ubuntuforums.org/showthread.php?t=2335669&p=13538805#post13538805 and it contains some screenshots illustrating the settings manager for automatic updates for different versions and flavours of Ubuntu. -o- There are various scripts in that package that change things to be more appropriate for the live environment. I suggest to change the default for security updates to 'Display immediately', when the system is running live and persistent live. See also this link to Ask Ubuntu, the first report about this problem: https://askubuntu.com/questions/817750/unattended-upgrades-broke- persistent-live-media/817820# ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: casper 1.376 ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CasperVersion: 1.376 CurrentDesktop: Unity Date: Thu Sep 1 08:32:08 2016 LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: casper UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: casper (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1619188 Title: Unattended upgrades can break persistent live media To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1619188/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
