14.04 to 15 Problems

Directly upgrade to Ubuntu 15.04 from 14.04 is not possible, but this does not mean that you can't do this. No USB sticks etc. needed. I do the update through SSH from remote PC :) Note:

Please keep in mind, that all operations below should be completed under root permissions or sudo, as you are modifying system settings.

Before you upgrade, you need to install these upgrade helpers: sudo apt-get install update-manager update-manager-core After that, go to /etc/update-manager/release-upgrades file and change Prompt=lts to Prompt=normal. Make sure that meta-release file in same folder looks like this. If it isn't there, add it at the bottom of the file: [METARELEASE] URI = http://changelogs.ubuntu.com/meta-release URI_LTS = http://changelogs.ubuntu.com/meta-release-lts URI_UNSTABLE_POSTFIX = -development URI_PROPOSED_POSTFIX = -proposed Upgrading from 14.04 to 15.04 will looks like this: 14.04 -> 14.10 -> reboot -> 15.04 -> reboot -> done Here are the next steps:

• execute do-release-upgrade -d in terminal
• [follow screen instructions], reboot at the end. 14.10 will be installed
• execute do-release-upgrade -d in terminal
• [follow screen instructions], reboot at the end. 15.04 will be installed

Enjoy! :) P.S. All data and software will be preserved. Also after the upgrade don't forget to update custom apt repositories, as they probably will be disabled for the upgrade period.