I see the next upgrade available as 16.04 LTS shown in update manager.

But the release date (from wiki) is written as April 2016. And it's not shown in Ubuntu page yet.

Why is it already available to upgrade now? If it's not official, why is it listed as an option in the update manager?

Thanks for any information.

(I'm in the process of upgrading my Ubuntu Gnome 14.04 in my Dell Venue 11 Pro 7140. Everything works, except sound, and modprobing my snd_soc_sst_broadwell fails - whereas in Ubuntu (main) 15.10, it works- , hence wanted to upgrade and came across this issue.)

  • 4
    16.04 alpha is available now. Guess you may have your settings to notify about any release. How are you trying to upgrade? – Ron Jan 14 '16 at 9:14
  • 2
    I used the command line to check -> update-manager -d. – Malik Jan 15 '16 at 16:00
  • 1
    For such hardware problems it always worths a look at the Ubuntu Hardware Enablment Stack to get current kernel and X versions into your LTS-Ubuntu wiki.ubuntu.com/Kernel/LTSEnablementStack – Bernhard Zürn Apr 26 '16 at 8:01

update-manager -d checks if upgrading to the latest development release is possible. Since 16.04 alpha 1 release is available from January 7, you'll be notified about this.

Read this post to know how to upgrade your system. Your best bet would be to use a 15.10 live USB.

  • I get ImportError: No module named 'gi._gi' – alvas Apr 21 '16 at 5:47
  • I get: Checking for a new Ubuntu release Segmentation fault (core dumped) – Ross Smith II Apr 22 '16 at 15:58

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