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E: unable to locate package ros-melodic-desktop-full

asked 2020-08-09 06:05:22 -0500

vered gravatar image

I tried installing ROS-melodic on my new virtual machine ubuntu18.04 using

sudo apt update
sudo apt install ros-melodic-desktop-full

and got the error: E: unable to locate package ros-melodic-desktop-full

I tried the solution suggested here and got:

Err:4 http://packages.ros.org/ros/ubuntu bionic 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 bionic
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 bionic 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.

what's now?

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try out this post?

praskot gravatar image praskot  ( 2020-08-10 00:12:16 -0500 )edit

Same problem. Did you find a solution?

dan gravatar image dan  ( 2021-02-07 15:47:39 -0500 )edit

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answered 2021-02-07 15:52:37 -0500

dan gravatar image

Here is the solution-- change the key

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Asked: 2020-08-09 06:04:43 -0500

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Last updated: Feb 07 '21