It seems we are experiencing a bug in apt in bionic WRT the 90s timeout.
With happy eyeballs, we added a new place where stuff can timeout; and
we did not mark these IP addresses as failed, hence they were always
retried, and thus you saw it attempting to connect 3 times to
tw.archive.ubuntu.com.
With that fixed, we should be down to 30s instead of 90s.
That said, I cannot reproduce that as connect() fails for me with "No
Route to Host" after 3 seconds, so I might have missed something.
** Changed in: apt (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1766542
Title:
Installation blocks when the machine is behind a proxy server
Status in OEM Priority Project:
Confirmed
Status in apt package in Ubuntu:
Triaged
Status in ubiquity package in Ubuntu:
Incomplete
Status in apt source package in Bionic:
New
Status in ubiquity source package in Bionic:
New
Bug description:
When the machine is behind a proxy server, the installation will block
for a while (several minutes) to retrieve the package lists. The
timeouts are too long and makes user feels the machine may have some
problems.
The symptom is similar with bug #14599, but it seems the apt-setup
module was rewritten.
Another method to trigger this issue is to make the machine cannot
access to the Internet, for instance: a wrong gateway.
Image: 16.04
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