hi all, I got Sapphire 4L 7950 and I cannot seem to change voltage under Linux. Tried all different tools and all failed. Used Trixx under Windows and worked fine(checked with kill-a-watt). Does anyone know any way to change voltage under linux? I also tried flashing some 1.090V bios and it worked just fine. And I saw some posts saying there is a 0.993V 7950 and does anyone know which bios is that? Thanks!