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I have been googling for hours trying to find a way to get rid of the annoying gpg-error referring to the link below. 

W: GPG error: http://download.opensuse.org Release: The following signatures could not be verified because the public key is not available: NO_PUBKEY 9A5EED8CBCA00D90

I have tried:

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 9A5EED8CBCA00D90

but to no avail.

Google Translated error message:

The following signatures could not be verified because the public key is not available

tomoqv
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    Please translate the error message... – Jan Sep 09 '14 at 20:49
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    I don't see why openSUSE keys should be in the Ubuntu keyserver. Look through the openSUSE documentation, I'm sure they'll have steps to get the key. – muru Sep 09 '14 at 20:58
  • W: GPG error: http://download.opensuse.org Release: The following signatures could not be verified because the public key is not available: NO_PUBKEY 9A5EED8CBCA00D90 – tomoqv Sep 10 '14 at 07:57
  • @EliahKagan: I have looked at the suggested duplicate and tried everything there, but it has not helped. – tomoqv Sep 10 '14 at 08:01
  • @muru: I don't know where opensuse comes from. Must be related to some package I have installed, but I have not been able to find which. I am not sure it is even needed by anything I am using or if it is a leftover from some previous install that I have removed. – tomoqv Sep 10 '14 at 08:04
  • Then comment out the opensuse entry from your sources and try again. You'll find out quickly enough whether you need it or not. – muru Sep 10 '14 at 08:49
  • @muru: Problem is I don't know which source I should edit or how to find it. I have just gone through all answers to http://askubuntu.com/questions/13065/how-do-i-fix-the-gpg-error-no-pubkey but error persists. – tomoqv Sep 10 '14 at 18:03
  • Finding it is easy: grep -i opensuse /etc/apt/sources.list* – muru Sep 10 '14 at 18:05
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    Aah, thanks! I found the culprits in /etc/apt/sources.list.d/trojita-nightly.list and /etc/apt/sources.list.d/trojita-nightly.list.save, so I removed both files and now the error is gone. – tomoqv Sep 10 '14 at 18:16
  • Because you're specifically trying to use the trojita package, here's some useful information: https://software.opensuse.org/download.html?project=home:jkt-gentoo:trojita&package=trojita Basically, for Ubuntu 16.04: sudo sh -c "echo 'deb http://download.opensuse.org/repositories/home:/jkt-gentoo:/trojita/xUbuntu_16.04/ /' > /etc/apt/sources.list.d/home:jkt-gentoo:trojita.list" \ wget -nv https://download.opensuse.org/repositories/home:jkt-gentoo:trojita/xUbuntu_16.04/Release.key -O Release.key \ sudo apt-key add - < Release.key \ sudo apt-get update \ sudo apt-get install trojita – Gwyneth Llewelyn Jan 06 '20 at 21:48

1 Answers1

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If you don't need the source, you can look up and remove/comment the source entries. To find out where they are:

grep -iR opensuse /etc/apt/sources.list*

In all likelihood, they are in the sources.list.d folder, so this command should disable such entries:

sudo sed -i '/opensuse/ s/^/#/' /etc/apt/sources.list.d/*.list

You can ignore files with the .save extension.

muru
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