Questions related to the sis (Silicon Integrated Systems) graphics chipsets and the related drivers.
Silicon Integrated Systems (SiS) is a company that manufactures, among other things, motherboard chipsets.
https://en.wikipedia.org/wiki/Silicon_Integrated_Systems
SiS graphics chipsets have been a source of difficulty for many Linux users. SiS graphics chipsets are better supported from *buntu 14.04 onwards, but some configuration may still be required.