Error prevents upgrade to pre-release

Project Discussion Pre-Release Discussion
1

I am trying to upgrade from 25.10 using the command:

sudo do-release-upgrade -d

But it eventually fais with an error:

/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcherCore.py:178: Warning: W:Download is performed unsandboxed as root as file ‘resolute.tar.gz.gpg’ couldn’t be accessed by user ‘_apt’. - pkgAcquire::Run (13: Permission denied)
result = fetcher.run()
אימות ‘resolute.tar.gz’ כנגד ‘resolute.tar.gz.gpg’
‘resolute.tar.gz’ מחולץ
[screen is terminating]

And eventually notifies me that “distribution data is outdated” (although distro-info-data is up-to-date, version 0.66).

Any ideas?

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2

Are you sure it’s updated; that detail you provided doesn’t match what I’d expect for an updated system (package 0.66 was on the ISO, but isn’t what is in -security or -updates)

 distro-info-data | 0.66           | questing          | source, all
 distro-info-data | 0.66ubuntu0.1  | questing-security | source, all
 distro-info-data | 0.66ubuntu0.1  | questing-updates  | source, all
1 Like
3

Thank you! This indeed was the problem. For some reason, the updates were set to “custom”. Now all is well (and I get a lot of other updates too).

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