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I guess, the title can describe the real problem.

I know that upgrading from 12.10 to 14.04 require step by step upgrades from 12.10 to 13.04 to 13.10 to 14.04 LTS.But after the EOL of 12.10, 13.04, 13.10, I still can't update neither upgrade. I guess that one of the manual solutions are:

1- Downgrade to 12.04 LTS and then jump to 14.04LTS, is it really possible ? 2- Upgrade to 14.04LTS via DVD, is it possible??

The last question, is there any solution to upgrade from 12.10 to 14.04 LTS directly that can be expected in the near future??

Thanks for helping

Nabil ben nasrallah
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1 Answers1

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Step by step upgrades are not required as regards non-LTS versions. It's fully possible to upgrade from 12.10 directly to 14.04 LTS. But you should never skip an LTS version.

Downgrading is not a good idea, if at all possible.

Edit:

If I was in your situation, I would try:

  • sudo -i gedit /etc/apt/sources.list
  • Replace all occurrences of quantal with trusty and save
  • sudo apt-get update
  • sudo apt-get upgrade
  • sudo apt-get install ubuntu-desktop
  • sudo apt-get dist-upgrade
  • Reboot
Gunnar Hjalmarsson
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  • It's fully possible to upgrade from 12.10 directly to 14.04 LTS!! How?? – Nabil ben nasrallah Aug 13 '14 at 11:30
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    It's possible, but not supported in any way. – saiarcot895 Aug 13 '14 at 11:38
  • @Nabilbennasrallah: I just updated my answer with how. – Gunnar Hjalmarsson Aug 13 '14 at 12:30
  • @saiarcot895: I know it's not officially supported. However, since LTS to LTS upgrades are supported, migration code needs to be kept until next LTS. – Gunnar Hjalmarsson Aug 13 '14 at 12:33
  • @GunnarHjalmarsson: If you just change the distros in /etc/apt/sources.list, you won't get any "migration code"; that code is downloaded only through the use of do-release-upgrade. – saiarcot895 Aug 13 '14 at 12:38
  • @saiarcot895: I think of migration code in the packages, e.g. in maintenance scripts. What kind of code do you have in mind? – Gunnar Hjalmarsson Aug 13 '14 at 12:42
  • @GunnarHjalmarsson: ah, that code. I thought you were referring to some code that determines what packages should be upgraded at all costs or something. At any rate, the maintenance scripts tend to remain the same across versions. – saiarcot895 Aug 13 '14 at 12:48
  • Thanks @GunnarHjalmarsson , i'll be trying your solution. – Nabil ben nasrallah Aug 13 '14 at 13:30
  • This solution is not really working,i can upgrade the 12.10 OS to 14.04 LTS, but some troubles are running during the upgrade, so I have to run "apt-get install-f " but still have a problem after dist-upgrade. No desktop and even shell window can't be opened. It's seems like it's not the right way to do so. – Nabil ben nasrallah Aug 13 '14 at 17:27
  • @Nabilbennasrallah: Can you say anything more about the nature of the problems? Did you reboot? (If you fail making it work, I'm going to delete the answer.) – Gunnar Hjalmarsson Aug 13 '14 at 17:50
  • I already did the same steps and I had a kind of error when running sudo apt-get dist-upgrade so i was obliged to run apt-get install -f so i can run the rest f commands and complete the upgrade. Now the system boots on 14.04 LTS but without desktop. I was trying to reinstall ubuntu-desktop,but even the shell window can't be opened. I will be trying to review this method, if there is any suggestion it will be helpful for me. – Nabil ben nasrallah Aug 14 '14 at 10:05
  • @Nabilbennasrallah: /var/log/lightdm/lightdm.log might contain useful guidance. Maybe you could edit your question and add the contents of that file. – Gunnar Hjalmarsson Aug 14 '14 at 10:27
  • I was trying this on a virtual machine I can't get the access to recovery mode to discover this file's content. – Nabil ben nasrallah Aug 15 '14 at 14:20