Jean Delvare wrote: > Can you try to load the i2c-dev driver, then run the following commands > and report the results: > $ i2cdetect -l > For each bus listed: > $ i2cdetect N FWIW it's really an ATIIXP chipset, but supposedly PIIX4 compatible: # i2cdetect -l i2c-0 smbus SMBus PIIX4 adapter at 8400 Non-I2C SMBus adapter # i2cdetect 0 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-0. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: XX XX XX XX XX XX XX XX XX XX XX XX XX 10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 20: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 30: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 40: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 50: 50 51 XX XX XX XX XX XX XX XX XX XX XX XX XX XX 60: XX XX XX XX XX XX XX XX XX 69 XX XX XX XX XX XX 70: XX XX XX XX XX XX XX XX