apt get vs synaptic pacage monitor

Rashkae ubuntu at tigershaunt.com
Mon Jun 1 02:16:47 UTC 2009

NoOp wrote:

> I check daily. I would have thought that it might have been a repo
> mirror issue as well, however I first did it on this machine then
> checked (repeated the process) on another machine with the exact same
> sources.list & mirror settings two hours later - same results.
> Just fired up another jaunty machine that hasn't been updated in at
> least 10 days and got the same results.
> Granted the updates were non-security updates (OpenOffice.org PPA's and
> the VirtualBox repo), but I would have thought that the standard 'sudo
> apt-get update' and then trying with the standard update-manager would
> have brought them up. It was only after I used 'Refresh' in Synaptic
> that the updates finally appeared.

There goes my great theory.. :)  I'm only shooting in the dark here, but
this is all I can think of:

Next time, try to do the update from command line.., ie: apt-get update
and apt-get upgrade.

My thinking is that the update manager must not be checking the local
apt-cache, but rather, relies on another process to notify it that
Updates are available.  It just so happens that Synaptic is performing
this extra step, whatever it is, but using apt-get to check for update
does not, in itself, enable Update Manager to detect the updates.

This is probably not widely known because people who use the command
line to check for updates are probably just as likely to continue using
the command line to install them.  But this is all conjecture on my part.

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