Noetic won't install
Ubuntu 20.04, New install
rodolfo@rodolfo-HP-Pavilion-Laptop-15-eh0xxx:~$ sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
[sudo] password for rodolfo:
rodolfo@rodolfo-HP-Pavilion-Laptop-15-eh0xxx:~$ sudo apt install curl # if you haven't already installed curl
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
chromium-codecs-ffmpeg-extra gstreamer1.0-vaapi
libgstreamer-plugins-bad1.0-0 libva-wayland2
Use 'sudo apt autoremove' to remove them.
The following NEW packages will be installed:
curl
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 161 kB of archives.
After this operation, 411 kB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 curl amd64 7.68.0-1ubuntu2.6 [161 kB]
Fetched 161 kB in 1s (290 kB/s)
Selecting previously unselected package curl.
(Reading database ... 183708 files and directories currently installed.)
Preparing to unpack .../curl_7.68.0-1ubuntu2.6_amd64.deb ...
Unpacking curl (7.68.0-1ubuntu2.6) ...
Setting up curl (7.68.0-1ubuntu2.6) ...
Processing triggers for man-db (2.9.1-1) ...
rodolfo@rodolfo-HP-Pavilion-Laptop-15-eh0xxx:~$ sudo apt update
Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://packages.ros.org/ros/ubuntu focal InRelease [4,676 B]
Hit:3 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:5 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:6 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Err:2 http://packages.ros.org/ros/ubuntu focal InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654
Reading package lists... Done
W: GPG error: http://packages.ros.org/ros/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654
E: The repository 'http://packages.ros.org/ros/ubuntu focal 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.
rodolfo@rodolfo-HP-Pavilion-Laptop-15-eh0xxx:~$ sudo apt install ros-noetic-desktop-full
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ros-noetic-desktop-full
We're going to need more information from you (e.g., what version of Ubuntu are you using) in order to help
Ubuntu 20.04, New install.