Hi Rudolf, > I think the function fails because nothing listens on that address. > (Khali/Jean can you confirm?) Absolutely right, as I explained in my other post. > you can try: > > modprobe i2c-dev > i2cdetect -l > > You will see the bus number you will use in next command. > > i2cdetect 0 > > 0 Is my bus number. > > This command will probe i2c addresses to find all clients. > If you will see XX on that address where should be 792D. Then it is > hidden. If sensors-detect did not trigger on any address while scanning the bus, this also confirms that. I think that's what Chunhao told in a previous mail. That said, a conformation from i2cdetect would be welcome for sure. -- Jean Delvare