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I'm new (and a newbie) to the window managers world. I have Kubuntu 20.10 installed, and I'd like to understand how to setup, use and control i3 wm, with kde and Polybar. I tried following a guide into the GitHub issues section, but it didn't work for me. I installed i3-gaps-deb following this and added

deb http://us.archive.ubuntu.com/ubuntu/ zesty main universe
deb-src http://us.archive.ubuntu.com/ubuntu/ zesty main universe

to /etc/apt/source.list But if i ran apt update terminal shows errors:

Hit:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http://it.archive.ubuntu.com/ubuntu groovy InRelease
Hit:3 http://it.archive.ubuntu.com/ubuntu groovy-updates InRelease              
Hit:4 http://it.archive.ubuntu.com/ubuntu groovy-backports InRelease            
Get:5 http://security.ubuntu.com/ubuntu groovy-security InRelease [108 kB]      
Get:6 http://de.archive.ubuntu.com/ubuntu xenial InRelease [247 kB]             
Err:6 http://de.archive.ubuntu.com/ubuntu xenial InRelease                      
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
Hit:7 https://packagecloud.io/AtomEditor/atom/any any InRelease
Reading package lists... Done
W: GPG error: http://de.archive.ubuntu.com/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
E: The repository 'http://de.archive.ubuntu.com/ubuntu xenial 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.

So I'm wondering where to find further informations. I'd like to make a working-setup similar to this: youtube video. Many thanks.

N0rbert
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aleemont
  • 21

1 Answers1

0

Mixing repositories is not a good idea, but you can proceed if you want to. Moreover the zesty Ubuntu version is now end-of-life, so you can not use archive.ubuntu.com URLs for it, you should use old-releases.ubuntu.com for it.

To remove NO_PUBKEY messages use commands below:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32

and then run sudo apt-get update.

Also note that official search engine for packages is located at https://packages.ubuntu.com and not on third-party blogs which are out-of-date.
If error persists after following the above method, then, please edit your question to specify your final idea.

N0rbert
  • 103,263