Euro Truck Simulator 2 1.5 from steam. I tested booth HD6450 and HD7770 same effect. Game looks like at night, but it's day. I used CATALYST driver before. I got mesa from https://launchpad.net/~oibaf/+archive/graphics-drivers
$ uname -a
Linux silverstone 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
I can't attach screenshot. I post links
Look at mirror: it's day now.
*** This bug has been marked as a duplicate of bug 64475 ***