I'm having some issues updating Ubuntu 18.04. Here is the error output
W: GPG error: http://download.opensuse.org/repositories/home:/strycore/xUbuntu_18.04 ./ Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2F7F0DA5FD5B64B9
E: The repository 'http://download.opensuse.org/repositories/home:/strycore/xUbuntu_18.04 ./ Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Researching similar problems, for example
How do I fix the GPG error "NO_PUBKEY"?
Doesn't work. Specifically, I get the error
nik@nik:~$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2F7F0DA5FD5B64B9
Executing: /tmp/apt-key-gpghome.uWb8bIzMR8/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 2F7F0DA5FD5B64B9
gpg: keyserver receive failed: No data
nik@nik:~$ gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv 2F7F0DA5FD5B64B9
gpg: keyserver receive failed: No data
I couldn't find a working solution to that problem though. Any advice? Thanks.
