https://help.ubuntu.com/community/WorldofWarcraft
This link shows good steps for setup
Add these to the Config.WTF file:
SET gxApi “opengl”
SET ffxDeath “0″
SET ffxGlow “0″
SET M2UseShaders “0″
If you experience stuttering, bad sound or no sound what so ever, then add the following options as well:
SET Sound_SoundOutputSystem "1" SET Sound_SoundBufferSize "150"