checking updates in Terminal error

[f23948]

when i check for updates it gives me error

Code:

___@___-HP-Compaq-dc7800-Small-Form-Factor:~$ sudo apt-get update
[sudo] password for ___:
Hit:1 http://repo.linuxliteos.com/linuxlite citrine InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu xenial InRelease                     
Get:3 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]     
Get:4 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]   
Hit:5 http://archive.canonical.com xenial InRelease                           
Hit:6 http://ppa.launchpad.net/nemh/systemback/ubuntu xenial InRelease         
Hit:7 http://ppa.launchpad.net/otto-kesselgulasch/gimp/ubuntu xenial InRelease
Get:8 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB] 
Ign:9 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial InRelease       
Hit:10 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu xenial InRelease       
Ign:11 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial Release
Ign:12 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main i386 Packages
Ign:13 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main all Packages
Ign:14 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en_US
Ign:15 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en
Ign:12 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main i386 Packages
Ign:13 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main all Packages
Ign:14 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en_US
Ign:15 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en
Ign:12 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main i386 Packages
Ign:13 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main all Packages
Ign:14 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en_US
Ign:15 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en
Ign:12 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main i386 Packages
Ign:13 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main all Packages
Ign:14 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en_US
Ign:15 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en
Ign:12 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main i386 Packages
Ign:13 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main all Packages
Ign:14 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en_US
Ign:15 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en
Err:12 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main i386 Packages
  404  Not Found
Ign:13 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main all Packages
Ign:14 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en_US
Ign:15 http://ppa.launchpad.net/richardgv/compton/ubuntu xenial/main Translation-en
Fetched 306 kB in 5s (60.6 kB/s)
Reading package lists... Done
W: The repository 'http://ppa.launchpad.net/richardgv/compton/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/richardgv/compton/ubuntu/dists/xenial/main/binary-i386/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
___@___-HP-Compaq-dc7800-Small-Form-Factor:~$

any suggestions?

[shaggytwodope]

https://launchpad.net/~richardgv/+archiv.../+packages

The ppa you added has no builds for xenial, and is severely out of date. I suggest removing it, and when in doubt asking for advice when installing any ppa. They can cause more harm then good.

[f23948]

thanks for reply, how do i remove it?

[rokytnji]

thanks for reply, how do i remove it?

Use the manual in your install to find out how. Example on mine.

image hosting no account

See the button for Edit Software Sources. It is pretty self explanitory. Use your manual to avoid any confusion.

[f23948]

never mind i got it working by unchecked next to compton