How to Upgrade to Ubuntu 18.10 from 18.04 LTS
- Open the “Software & Updates” app.
- Tap the “Updates” tab.
- Find the section titled “Notify me of a new Ubuntu version”
- Set 'For long-term support versions' to 'For any new version'
- Click 'Close'
How to Upgrade to Ubuntu 18.10 from 18.04 LTS