Found a solution. Creating manually the folder /home/steam/.var/app/com.valvesoftware.Steam/.factorio and giving ownership of it to the current user running the game, seems to fix the problem.

I use Arch Linux, I have steam installed via flatpak and I cannot launch the game. First it shows a Steam Cloud Error. This is the log when it is trying to sync steam:


src/clientdll/remotestoragefilesynccontext.cpp (947) : Assertion Failed: Failed to write file after download (2)
src/clientdll ...

Ok, I rebooted and unplugged and it just make the problem worse...

It was exactly on the moment I alt+tabbed when it started, thats why I thought that developers should know but yep, probably was just a coincidence

I was playing on a window while watching a movie on a small browser window on a side. Then I ALT+TABBED to the video window and the screen filled with noise and stopped responding, I had to reboot from the power button.

Now my computer screen its like this:
http://i.imgur.com/TAstOOn.jpg
http://i ...