I have a laptop (a Samsumg P28) which has lots of ATI chips in it. One of them (according to lspci) is an SmBus controller, and it has a PCI id of 1002:4353. Looking at the lmsensors web site there are no bus drivers for any ATI chips. This seems to be one of the functions in the Ati 9000 IGP chip, which is also the video driver. It is marked as being the 9100 IGP chip in the linux PCI repository, but I guess they use the same silicon in both chips. I could not find any documentation on the chip (technical stuff that is, plenty of marketting material), but I am not quite sure where ATI publish such things. Is anyone working on such a chip? David