I tried following the docs on their website under the Debian distro section but I get the following output.
https://docs.gns3.com/docs/getting-started/installation/linux
sudo apt update
sudo apt install -y python3-pip python3-pyqt5 python3-pyqt5.qtsvg
python3-pyqt5.qtwebsockets
qemu qemu-kvm qemu-utils libvirt-clients libvirt-daemon-system virtinst
wireshark xtightvncviewer apt-transport-https
ca-certificates curl gnupg2 software-properties-common
Hit:1 http://security.debian.org/debian-security bookworm-security InRelease
Hit:2 http://deb.debian.org/debian bookworm InRelease
Hit:3 http://deb.debian.org/debian bookworm-updates InRelease
Get:4 http://ppa.launchpad.net/gns3/ppa/ubuntu trusty InRelease [15.4 kB]
Hit:5 https://dl.google.com/linux/chrome/deb stable InRelease
Err:4 http://ppa.launchpad.net/gns3/ppa/ubuntu trusty InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9A2FD067A2E3EF7B
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net/gns3/ppa/ubuntu trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9A2FD067A2E3EF7B
E: The repository 'http://ppa.launchpad.net/gns3/ppa/ubuntu trusty InRelease' 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.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'qemu-system-x86' instead of 'qemu-kvm'
Package qemu is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'qemu' has no installation candidate
I am new to Linux too so not sure where I am going wrong here.
Thanks!
