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Yesterday I decided to upgrade from 16.04 to 18.04. Soon enough I bumped into some issues, like no internet connectivity because of the resolv.conf being overwritten during the upgrade. I managed to fix that by following this link.

Still, I am having another issue: when I look under Software & Updates, under the Other Software tab, I see a bunch of disabled repos, hence I am not able to run or reinstall any new software.

Any help with this will be much appreciated. Is there a way to purge the repos so that I can keep running the installed software seemlessly? Or shall I reinstall the software anew? An example of this is Rednotebook.

Thank you in advance for your help.

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  • Upgrading to a new version is always risky, so it is a good idea to have a good backup of the previous system before starting such an adventure. One of the things, that is done by the upgrader is to disable PPAs and non-standard repos. Now you can enable them if you wish (and if they are available for 18.04), in order to install the program packages, that you want (and that reside in PPAs and non-standard repos).
    – sudodus
    Jul 30, 2018 at 18:21
  • is there an easy and quick way to check the PPAs that are compatible with 18.04?
    – mania_operat0r
    Jul 30, 2018 at 18:28
  • Visit each PPA at launchpad.net and check, for example https://launchpad.net/~mkusb/+archive/ubuntu/ppa/+packages. Near the top of the page it states "This PPA currently publishes packages for Cosmic, Bionic, Artful, Zesty, Yakkety, Xenial, Wily, Vivid, Trusty, and Precise." Bionic is 18.04 LTS.
    – sudodus
    Jul 30, 2018 at 20:56

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