Remove the http://ppa.launchpad.net/alexlarsson/flatpak/ubuntu ppa.
You might've added it from various guides around the internet when flatpak was released, that's how I got it. It's no longer needed as, since 5.1, elementary supports flatpak out of the box.
Resolve Missing Firmware Warnings
If everything is working fine, then those warnings are of no importance so technically you can ignore them. Anyway, to have a peace of mind you can get rid of those by manually downloading and installing firmwares.
First download all missing firmwares from Intel repository of firmware blobs:
For i915: https://git.kernel.org/...
Just remove the repo for your system:
sudo rm /etc/apt/sources.list.d/vivaldi.list
I hope this help you
Could you please try:
sudo apt-key add linux_signing_key.pub
To disable ad-blocking in eOS, you need to open the browser, click on the gear icon, and set the preferences to allow ads.
However, this isn't the kind of fidelity that you're looking for. In Epiphany, the eOS default browser, ad-blocking is binary, meaning that it is either on or it is off. You can't disable it for individual sites while keeping it enabled ...
Your issue seems to be caused by some obsolete / wrong repositories.
First one (http://ppa.launchpad.net/djart/minidlna/ubuntu) was not updated since 2014, and using it is a really bad idea. You can remove it safely with:
sudo add-apt-repository --remove ppa:djart/minidlna
For the next ones, you'll have to do some source.list editing, because they contain ...
Here's how I solved the flatpak update issue.
Update faltpak in Terminal.
One package org.freedesktop.Platform.GL.default found but got error when update.
List the installed package.
I found the same package is installed.
Uninstall that package.
flatpak uninstall [Application ID]
Update flatpak and it success.
It looks like the file permissions on the flatpak folder in your home directory (or possibly your home directory as a whole) are broken. Have you possibly ran a GUI program with sudo or ran some script that could have caused this?
I'd start by resetting the ownership of the flatpak directory. To do this:
sudo chown -R ryan:ryan /home/ryan/.local/share/...
to delete a uncompatile or bad repository try this command in the termnial
$ sudo nano /etc/apt/sources.list
when nano is openned, remove that bad repository (manuelscheider) and press
Ctrl + O to save and Ctrl + X to exit.
After this operation run this command in the terminal
$ sudo apt-get update && sudo apt-get upgrade -y
And that is all. I hope ...
Now I know what was going on
The ISP company that provide my internet has as poor DNS, so I changed the DNS to 22.214.171.124 and 126.96.36.199 to modem's configuration and now everything is updating.
All my sources.list.d/ files was poiting to bionic which it's the right thing to do.
So if anyone has this problem, please try to check your DNS first