Thanks for your help, upgrading the driver to 352.30 fixed the issue. I wasn't aware that there is a newer version as the official ubuntu repositories only seem to package older versions of the driver.

The server seems to be stuck in a desync loop right now - it's fine for all players currently connected, but any new ones will immediately desync after loading the map.

It didn't look interesting. 0.000 Info Main.cpp:150: Program arguments: "games/factorio/bin/x64/factorio" 0.001 2015-07-30 19:53:33; Factorio 0.12.1 (Build 16116, linux64) 0.001 Operating system: Linux 0.001 Read data path: /home/lukas/games/factorio/data 0.001 Write data path: /home/lukas...

Sorry, I hoped you could figure it out with the stacktrace only. ;) >Does this only happen with i3? I'm only using i3, so I don't know. I also don't have a way to reproduce it reliably, although it has happened a few times now. >What distribution do you use? Ubuntu 15.04 >What graphics card and what...

I'm on Linux using i3wm. Switching the game between fullscreen and windowed (standard binding $mod+f) sometimes produces a segfault: Factorio crashed. Generating symbolized stacktrace, please wait ... 824.622 Warning Logger.cpp:315: Symbols.size() == 22, usedSize == 18 #0 0x7f21f6ba22f0 in ?? at ??:...

If you're being dropped from the game while joining, please be considerate to the active players and don't try to rejoin continuously. It's usually not an issue with the server or Factorio, but a bad internet connection. Waiting every few minutes for someone downloading 5-10 MB at less than 50 kB/s ...