Agon; Installing a third party app is not a resolution nor is my trouble ticket a platform to advertise your YouTube channel.
Mojang? Any word on a fix? Still getting the following error when attempting to connect to an MC server.
Failed to connect to the server
Failed to login: The authentication servers are currently down for maintenance.
Kepler; I am having the same issue on my Ubuntu 18.04 using SNAP.
I went to Minecraft.net and downloaded it from there.
I am able to launch Minecraft using that download (not the snap version); but I cannot connect to any servers: The authentication servers are currently down for maintenance. (but my Windows machines and other Ubuntu connect just fine)
If you have time; would you mind installing from Minecraft.net and see if it works and if you can connect to an online server?
Hopefully this will either fix your issue or restore some of my sanity in knowing that someone else is having the same issue.
*EDIT: I should note that the Minecraft.net version requires libgconf2-4 to be installed.
Package xrandr is not available in Ubuntu. It's twin is x11-xserver-utils which is already installed.
This is not the fix.
Kriaf; I know you like to comment on every ticket that flows through here, but please; if you have nothing helpful to say, say nothing.