The proposed patch for ticket #1734 worked fine on a 2.6.7 Now the i2c bus is there: Installed I2C busses: i2c-0 unknown SMBus SIS630 adapter at 1080 Algorithm unavailable sensors-detect only scans ISA and Super I/O buses and fails to find any chip. But as sensors was already configured, it works: mc1066-i2c-0-4e Adapter: SMBus SIS630 adapter at 1080 .. Thanks