For the BIOS, I have is the latest version. Therefore, this is not the solution. I also tried the new 2.6.0-test2 kernel and I got some improvements : now it detects the SMBus but it says it is disabled. Here is the output of lspci -vv: 00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016 Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin B routed to IRQ 10 Region 4: I/O ports at 1000 [disabled] [size=32] The IRQ is 10 which is the same as the Firewire and the CardBus controllers. However, I didn't compile Firewire and CardBus in the kernel. Therefore, I don't think it is an IRQ conflict. -- Philippe Wautelet Research assistant, Aerodynamics Group, University of Liege, Belgium, http://www.ulg.ac.be/aerodyn Private website: http://www.fractalzone.be