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This documentation lacks a warning to purge 3rd party software before a release upgrade is started.
It should explain that do-release-upgrade will disable PPAs and other third party apt repositories, but that it will not, however, remove and downgrade software installed from those. And point out that this is the most common cause of upgrade failures (resulting in daily upgrade failure bug reports by users).
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I’m relatively new to Ubuntu.
I built and run a Ubuntu Server 18.04 LTS using Virtualmin as a system helper for configuration. I built a similar non-production machine to test the upgrade process when it becomes available at the end of July.
I ran the “do-release-upgrade -d” command. That seemed to work all OK, but when I rebooted the machine I discovered that the upgrade had installed a lot of unwanted software, including a game!
This surprised me a tad as I would have thought that it should have just upgraded what was there. This might well be because I have jumped the gun on the upgrade.
Should be (somehow) highlighted once every two years.
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Fetching and installing the upgrade can take several hours. Once the
download has finished, the process cannot be canceled.
This is not the case.
I ctrl-c’d because the download hanged. Due to a switch from wifi to wired.
do-release-upgrade wouldn’t continue.