Consistent disconnection by VAC in Linux, despite verifying local file integrity
Solution 1:
This is a Linux-specific issue that has been fixed by Valve as of 20-01-2018
References:
- https://steamcommunity.com/app/221410/discussions/0/1693785035813219301/
- https://github.com/ValveSoftware/Source-1-Games/issues/2502
- https://github.com/ValveSoftware/csgo-osx-linux/issues/1596