Hi Nils, > i could post the panic data (any particular kernel debug settings i > should enable ?) if it would help. Enabling all four I2C debug options (core, algorithms, busses, chips) may help. > do i have to have modules enabled to get this option ? > (or is this not a kernel config parameter ?) You can pass i2c_algo_bit.bit_test=1 to your boot loader. -- Jean Delvare