There is no sound and the non-seamless of Left 4 Dead 2

Yesterday I installed the steam Left 4 Dead 2. Reading the online version on Linux, I learned that it works much better than on Windows, but it works for me tragically. On Windows, with all the details set to minimum and resolution 1600 x 900 is about 50 fps and the game is very good, unfortunately on Linux even at a resolution of 1366 x 768 As ​​a Non-seamless and in addition there is no sound. Does anyone know what is the problem?
Here is my setup:
Intel Core i3 - 3220
Intel Graphics HD 2500
Windows 8 Pro openSUSE 13.1 x64 and x64.

Thanks in advance for any help.
I greet.

How to fix sound


killall pulse-audio

this worked for me