Hi Mark, > Anyway, it looks like i2c-amd756 and/or i2c-amd8111 is hosed up. I'm not sure > why. Can anyone else jump in on that? If you refer to these log messages: > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x50 > > i2c_adapter i2c-1: Transaction (pre): GS=0004, GE=0000, ADD=00a0, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00a0, DAT=0002 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x51 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00a2, DAT=0002 > > i2c_adapter i2c-1: SMBus protocol success! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00a2, DAT=0002 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00a2, DAT=0002 > > i2c_adapter i2c-1: SMBus protocol success! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00a2, DAT=0002 > > i2c_adapter i2c-1: client [eeprom] registered with bus id 1-0051 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x52 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00a4, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00a4, DAT=0002 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x53 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00a6, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00a6, DAT=0002 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x54 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00a8, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00a8, DAT=0002 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x55 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00aa, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00aa, DAT=0002 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x56 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00ac, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00ac, DAT=0002 > > i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x57 > > i2c_adapter i2c-1: Transaction (pre): GS=0000, GE=0000, ADD=00ae, DAT=0002 > > i2c_adapter i2c-1: SMBus Protocol error (no response)! > > i2c_adapter i2c-1: Transaction (post): GS=0000, GE=0000, ADD=00ae, DAT=0002 I don't think there's anything wrong. Kevin said: > > Here's all the relavant output I can think of. btw this is will > > all i2c debugging kernel options on) Bus drivers tend to be pretty verbose during probing in debugging mode, because missed probes are actually non-acked SMBus transactions, so they are seen as errors by the master. Nothing to be worried about. -- Jean Delvare