I have the b5dd model (with the 5600h processor) and linux support is good. Just find out what is the make and model of the wifi card. B55D came with a mediatek card which had problems with older kernels.

Build quality is average at best and it is fairly heavy but when you are going for a budget laptop, you have to sacrifice something. As another commenter said, if you are not gaming or video editing, you could go for different model with a smaller footprint, and better build.