Lighting in maps: how to turn off mat_fullbright 1?

[MrFlovi]

Could anyone in this forum try to play my test map in their Team Fortress 2 and see if mat_fullbright is on 1 or 0?

Could anyone do this?

 

[Da Spud Lord]

Even after doing my own compile, I could not get any lighting. This was despite no notable errors appearing in the compile log.