> $ do-release-upgrade
> Checking for a new ubuntu release
> Unhandled exception in thread started by <bound method
> MetaReleaseCore.download of
> <UpdateManager.Core.MetaRelease.MetaReleaseCore object at
> 0x7fc70c066090>> Traceback (most recent call last):
> line 261, in download
The fact that urlopen here is failing suggest that the problem is
simply one of connecting to the Ubuntu servers. I agree that this is
not a good way to tell you this.
Does apt-get work? For example, can you run
sudo apt-get update
? Could you post the content of your /etc/apt/sources.list?
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