sudo apt-get update not working after install PPAs

Question

after install some PPAs when ever I do sudo apt-get update the output is

Hit:1 http://au.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://repo.steampowered.com/steam precise InRelease                                                                                                                  
Hit:3 http://au.archive.ubuntu.com/ubuntu bionic-updates InRelease                                                                                                          
Hit:4 http://au.archive.ubuntu.com/ubuntu bionic-backports InRelease                                                                                             
Hit:5 http://security.ubuntu.com/ubuntu bionic-security InRelease                                                                                                
Ign:6 http://ppa.launchpad.net/grumbel/ppa/ubuntu bionic InRelease       
Hit:7 http://ppa.launchpad.net/kelleyk/emacs/ubuntu bionic InRelease        
Err:8 http://ppa.launchpad.net/grumbel/ppa/ubuntu bionic Release                                                       
  404  Not Found [IP: 91.189.95.83 80]
Get:9 https://qgis.org/ubuntu bionic InRelease [3,693 B]
Err:9 https://qgis.org/ubuntu bionic InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 51F523511C7028C3
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/grumbel/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: GPG error: https://qgis.org/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 51F523511C7028C3
E: The repository 'https://qgis.org/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.

mchid · Accepted Answer · 2019-11-04T00:32:58.337

The grumbel ppa does not show any packages for bionic. When you look at the launchpad page for this ppa, under "Overview of published packages" there is a filter where you can select the Ubuntu version and bionic is not listed.

You can delete this ppa by running the following command:

sudo rm /etc/apt/sources.list.d/grumbel*

Also, I don't know how you installed the qgis.org repository so you will have to do one of the following.

First, if you have a file in /etc/apt/sources.list.d for this repository, edit the file and change "ubuntu" to "debian", save the file and then run: sudo apt update.

However, if you edited your /etc/apt/sources.list file to add this repository, edit this file and on the qgis.org repository line, change "ubuntu" to "debian". and then run: sudo apt update

Click here for more information on installing the qgis.org repository.

Alternatively, you can remove the offending ppas in Software&Updates.

sudo apt-get update not working after install PPAs

1 Answers1