How to analyze a "[Waiting for headers]" problem during "apt-get update"?
I was able to fix it.
http://debian.sur5r.net/i3/ (quantal, universe) did not respond. After disabling it,
apt-get update succeeds.
Tips for the next one that runs into this problem:
synapticand disable sources until
Reloadno longer hangs. Especially, 3rd party sources seem to be candidates.
- Reactive your sources until you hit the one that causes problems.
synaptic is great for diagnostics. When
Reload hangs and you abort it, it prints out the current repository. In my case, it was exactly the bad one:
Failed to fetch http://debian.sur5r.net/i3/dists/quantal/InRelease Some index files failed to download. They have been ignored, or old ones used instead.
Better still, just do:
apt-get -o Debug::Acquire::http=true update
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Philipp Claßen 3 days
sudo apt-get updatesometimes becomes stucked:
... 99% [Waiting for headers]
This seems to be a common problem and can have several reasons. For example, on one machine, it was caused because I used a bad proxy server configuration.
Is there a way to systematically analyze the problem? It looked at the
man apt-getbut could not find any option that provides more information to isolate the problem. Are there any tools besides
apt-getthat I can use to get more insights?
Flimm over 9 yearsThis is a network connectivity problem, and is not specific to
Philipp Claßen over 9 years@Flimm My internet connection seems to be fine. I have no problem besides
apt-get update. Installing new packages via
apt-get installalso worked. You may be right that
apt-getdoes not cause the problem but at least for me it is some kind of blackbox. My question is what can I do isolate the problem?
Mukund over 9 yearsCheck out this link: askubuntu.com/questions/156650/…
Philipp Claßen over 9 years@Mukund Thanks, that helped me to fix the problem. See my answer below.
xerostomus over 5 yearsI solved this problem simply by unpluging the wifi connection and connecting my PC directly via a cable. So problem was somewhere in my wifi routers (OpenWrt). Unfortunatelly I am unable diagnose where... :-(
Admin over 9 yearsAre you sure that you wouldn't see something similar to "Failed to fetch debian.sur5r.net/i3/dists/quantal/InRelease Some index files failed to download. They have been ignored, or old ones used instead." even using plain apt-get?
Philipp Claßen over 9 years@vasa1 No, it just hangs forever. When you abort it by pressing ctrl-c, it does not print anything before it quits.
XtraSimplicity over 1 yearThis is great! It helped to show that there was actually a problem with my firewall's HTTP proxy -- which I had forgotten I even had! :)