(12-01-2019, 02:26 AM)hdk Wrote: apt-get update problems:

W: http://ppa.launchpad.net/ayufan/rock64-0.8-ppa/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
E: The repository 'http://ppa.launchpad.net/kupfer-team/ppa/ubuntu bionic Release' does not have a Release file.
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.
W: http://ppa.launchpad.net/ayufan/rock64-0.9-ppa/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://ports.ubuntu.com/ubuntu-ports/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://ppa.launchpad.net/gerardpuig/ppa/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://ports.ubuntu.com/ubuntu-ports/dists/bionic-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://deb.ayufan.eu/orgs/ayufan-rock64/releases/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://repo.steampowered.com/steam/dists/precise/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://ports.ubuntu.com/ubuntu-ports/dists/bionic-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://ppa.launchpad.net/oguzhaninan/stacer/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.
W: http://ppa.launchpad.net/utappia/stable/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ayufan.key.chroot.gpg are ignored as the file has an unsupported filetype.