How do I correct this?
Thanks in advance!

===========================
Install Updates Error Log
===========================

Install Updates could not fetch the package cache information lists.
Go to https://www.linuxliteos.com/forums/ and paste the log below into
a new or existing thread for assistance.

============ Log ===========

Ign:2 http://linux.dropbox.com/ubuntu noble InRelease
Hit:3 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:4 http://linux.dropbox.com/ubuntu noble Release
Hit:5 http://repo.linuxliteos.com/linuxlite galena InRelease
Hit:1 https://repository.spotify.com stable InRelease
Hit:6 https://packages.mozilla.org/apt mozilla InRelease
Ign:7 https://ppa.launchpadcontent.net/appgrid/stable/ubuntu noble InRelease
Hit:8 http://mirror.i3d.net/pub/ubuntu noble InRelease
Hit:9 https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu noble InRelease
Hit:10 http://mirror.i3d.net/pub/ubuntu noble-updates InRelease
Hit:11 https://ppa.launchpadcontent.net/mozilla...ext/ubuntu noble InRelease
Hit:12 http://mirror.i3d.net/pub/ubuntu noble-backports InRelease
Hit:14 http://mirror.i3d.net/pub/ubuntu noble-security InRelease
Err:15 https://ppa.launchpadcontent.net/appgrid/stable/ubuntu noble Release
  404  Not Found [IP: 185.125.190.80 443]
Reading package lists...
E: The repository 'https://ppa.launchpadcontent.net/appgrid/stable/ubuntu noble Release' does not have a Release file.
W: https://ppa.launchpadcontent.net/mozilla.../InRelease: Signature by key 0AB215679C571D1C8325275B9BDB3D89CE49EC21 uses weak algorithm (rsa1024)
W: https://ppa.launchpadcontent.net/mozilla.../InRelease: Signature by key 0AB215679C571D1C8325275B9BDB3D89CE49EC21 uses weak algorithm (rsa1024)

Hi , I am Sadegh from Netherlands , and am new here. Unfortunately I encountered a problem , when I tried to install free proton vpn , on my desktop. I followed instructions of proton , on terminal , and got the message : " can not find package proton-vpn-gnome-desktop.
Can someone help me with this , please ?

===========================
Install Updates Error log
===========================
Install Updates could not fetch the package cache information lists.
Go to https://www.linuxliteos.com/forums/ and paste the log below into a new or existing thread for assistance.

============ Log ===========

Hit:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit:3 https://packages.microsoft.com/repos/edge stable InRelease
Hit:4 http://repo.linuxliteos.com/linuxlite emerald InRelease
Hit:5 http://archive.canonical.com/ubuntu focal InRelease
Hit:6 https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit:7 https://packages.microsoft.com/repos/code stable InRelease
Err:5 http://archive.canonical.com/ubuntu focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Get:8 http://security.ubuntu.com/ubuntu focal-security InRelease [128 kB]
Ign:9 http://linux.dropbox.com/ubuntu disco InRelease
Hit:10 http://linux.dropbox.com/ubuntu disco Release
Get:11 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:13 https://repo.protonvpn.com/debian stable InRelease [2,967 B]
Err:13 https://repo.protonvpn.com/debian stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EDA3E22630349F1C
Err:8 http://security.ubuntu.com/ubuntu focal-security InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Err:11 http://archive.ubuntu.com/ubuntu focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Get:14 http://archive.ubuntu.com/ubuntu focal-security InRelease [128 kB]
Err:14 http://archive.ubuntu.com/ubuntu focal-security InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Get:15 http://archive.ubuntu.com/ubuntu focal-updates InRelease [128 kB]
Err:15 http://archive.ubuntu.com/ubuntu focal-updates InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Reading package lists...
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.canonical.com/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://repo.protonvpn.com/debian stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EDA3E22630349F1C
W: GPG error: http://security.ubuntu.com/ubuntu focal-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
E: The repository 'http://security.ubuntu.com/ubuntu focal-security InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
E: The repository 'http://archive.ubuntu.com/ubuntu focal InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu focal-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
E: The repository 'http://archive.ubuntu.com/ubuntu focal-security InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu focal-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
E: The repository 'http://archive.ubuntu.com/ubuntu focal-updates InRelease' is not signed.

Hi everyone,

I'm trying to install Cisco Packet Tracer 8.2.2 on Linux Lite 7.0, which is based on Ubuntu 24.04. However, when I run the `.deb` installer, I get the following error:

packettracer depends on libgl1-mesa-glx; however: Package libgl1-mesa-glx is not installed.


I tried installing `mesa-utils` and other related packages, but it seems `libgl1-mesa-glx` is no longer available in the 24.04 repositories. I also searched for `.deb` packages online, but couldn't download them successfully from the Ubuntu mirrors.

Does anyone know a safe workaround for this? Maybe a replacement library or a PPA that brings this dependency back? I’d like to avoid downgrading my system or switching distros just for this.

Thanks in advance for any help!

Attached Files

Thumbnail(s)
   

Turns up where you least expect it...

Thank you for your understanding

Hi folks,

I have spent a couple of days fine tuning the Forums and I am really pleased with the results.

Could you please have a click around randomly and let me know if it feels snappier.  Thank you

Hello i tried to fix this problem with the help of AI assistant on the main site but it could not help so now im asking you guys. 
Whenever im trying to run sudo apt upgrade or sudo apt dist-upgrade I get the same error and i have no idea what to do with it. 

" linuxlite  ~  sudo apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  linux-headers-6.8.0-52 linux-tools-6.8.0-52
Use 'sudo apt autoremove' to remove them.
The following upgrades have been deferred due to phasing:
  libnvpair3linux libuutil3linux libzfs4linux libzpool5linux nvidia-common
  ubuntu-drivers-common update-notifier-common zfs-initramfs zfs-zed
  zfsutils-linux
The following packages have been kept back:
  inxi zenity zenity-common
0 upgraded, 0 newly installed, 0 to remove and 13 not upgraded.
N: Some packages may have been kept back due to phasing.
 linuxlite  ~  "

how can i solve this? the system is not upgrading

I am having problems with lite-software - it's crashing without any messages or logs.... AI help did not helped and AI recommend me to go to Forums

Please help !

thx

respectfully

Ant
https://www.facebook.com/profile.php?id=61574787954920