Ubuntu
update-manager package

Update errors out with Hash Sum mismatch

Bug #463435 reported by Jarl on 2009-10-29

This bug report is a duplicate of: Bug #228247: The meta-release file should be moved to archive.ubuntu.com to let the mirrors carry it. Edit Remove

This bug affects 3 people

Affects		Status	Importance	Assigned to
	update-manager (Ubuntu)	New	Undecided	Unassigned
Nominated for Jaunty by Jarl
Nominated for Karmic by Jarl
Nominated for Lucid by Jarl

Bug Description

Binary package hint: update-manager

The update notifier (in KDE) told me that Karmic was available, but when I started upgrading it failed. It seem like the reason was that the files have not yet reached the mirror I use.

See original description

Revision history for this message

Jarl (jarl-dk) wrote on 2009-10-29:

This is what I seein the upgrade screen (the error dialog)
Note to non-danes: "Kunne ikke hente" means "Could not fetch"
"Nogle indeksfiler kunne ikke hentes, de er blevet ignoreret eller de gamle bruges i stedet." means
"Some index files could notbe fetched, they are ignored or the previous ones are used in stead"

Revision history for this message

to be removed (liw) wrote on 2009-10-30:

Jarl, could you try again in a few days? It is unfortunate that we cannot ensure that all mirrors are updated in perfect synchronization, so sometimes a few of these temporary glitches happen. Luckily they are not very frequent. I agree that it's annoying, though.

Changed in update-manager (Ubuntu):
status:	New → Incomplete

Revision history for this message

Jarl (jarl-dk) wrote on 2009-10-30:

It seems that the mirror is ready now.

What I expected is that I was not notified until MY mirror is completely updated, that's what I see as the real problem. I would rather have that notification a few hours later, as long as I could trust when it finally arrived.

Jarl

Jarl (jarl-dk) on 2009-11-02

Changed in update-manager (Ubuntu):
status:	Incomplete → New

WeatherGod (ben-v-root) on 2009-12-04

description:

updated

WeatherGod (ben-v-root) on 2009-12-11

summary:

- I was notified that upgrade was available, but it was not ready
+ I was notified that upgrade was available, but the local mirror was not
+ ready

WeatherGod (ben-v-root) on 2009-12-11

summary:

- I was notified that upgrade was available, but the local mirror was not
- ready
+ Update errors out with Hash Sum mismatch

Revision history for this message

Tim Casey (tjcasey) wrote on 2011-03-24:

Thanks for the bug report. As explained, we have no control over mirrors as they are hosted by 3rd parties.

Update manager did notify you about the update being available, which was correct. It's just that your mirror wasn't up to date.

This bug is quite old now, have you had any further issues with that mirror since first reporting the bug?

Changed in update-manager (Ubuntu):
status:	New → Incomplete

Revision history for this message

Jarl (jarl-dk) wrote on 2011-03-26:

The analysis is most likely correct. But that does not resolve the problem. The problem being ubuntu configured to use a mirror (like http://dk.archive.ubuntu.com/ubuntu/dists/...) and update manager notifies the user that an upgrade is available before it reaches the configured mirror (http://dk.archive.ubuntu.com/ubuntu/dists/...)

So what kind of information do you need? The problem is most likely reproducible with the following steps:
1. Configure your ubuntu to use mirror site (like http://dk.archive.ubuntu.com/ubuntu/dists/...)
2. Configure your update manager (KPackageKit) to check for updates hourly.
3. Let the computer stay turned on the day a new release is released and observe.
4. As soon as the update manager notifies you of a new release, choose to upgrade your ubuntu.

Jarl

Changed in update-manager (Ubuntu):
status:	Incomplete → New

Revision history for this message

Robert Roth (evfool) wrote on 2011-08-11:

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug #228247, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

The bug I'm marking this a duplicate is not exactly the same thing, but these both have the same root cause: the release update notification in update-manager appears when the metarelease file hosted on changelogs.ubuntu.com is updated with the new info, but you can only update, when your mirror has been updated to contain the latest version. The other bug is about moving the metarelease file a place where it can be mirrored/carried with the mirrors, that way you will only see the update notification when the mirror you are using is updated, not when the main server is updated.
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