Hi,
On Wed, Jul 26, 2017 at 06:05:45AM +0700, Brianajie wrote:
> Versions of packages apt suggests:
> ii synaptic 0.84.2
Do you happen to have run synaptic recently, perhaps adding a repository
or similar such with it? We had recently users who did and had those
symptoms (guessing, as you have "helpfully" truncated the apt output
– don't do this in bugreports, always show the complete output).
As root (or via sudo) you should run:
ls -l /etc/apt/trusted.gpg{,.d}
file /etc/apt/trusted.gpg{,.d/*}
My guess is that one of those files is a keybox file which apt can't deal with
– and to top it of the keybox file is probably empty. Very likely the
/etc/apt/trusted.gpg file which tends to not exist nowadays, so after those
two commands lets directly try moving the file out of the way:
mv /etc/apt/trusted.gpg{,.bak}
Hopefully that helps already. If not the output of the earlier two might
help us. If "apt update" still fails please add: -o Debug::Acquire::gpgv=1
and include the full output (beware, that can be a lot) in a followup.
Best regards
David Kalnischkies
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