Alternatively, replace legal.ogv with a blank text file with the same filename and extension.
Some users have encountered issues such as not being able to set their native resolution; the game resetting their chosen resolution to a lower one; or the game's maximum available resolution being lower than their monitor's native resolution. Such cases may be caused by the presence of multiple monitors attached to the computer, or attempting to play the game on an attached TV where larger resolutions may not be available. Possible solutions include unplugging any extra monitors or setting the multi-monitor display mode in Windows to "Computer Only".
From the main menu, go to Chapters, select Undercity and play the level from the beginning again.
Install Metro Mouse Fix.
The monitors have to be unplugged, simply disabling them doesn't fix the issue.
Use the command line arguments SDL_AUDIODRIVER=alsa %command%
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
Subdevice #0: subdevice #0