On Tue, 24 Jan 2017, i.merten@tagesschau.de wrote: > Jan 24 12:00:37 hhloktsde-ardenc-master3 kernel: [63420.030077] i2c i2c-3: > sendbytes: NAK bailout. An i2c device had a transient issue. We'd need to know what is i2c-3 to say more. Please tell us the output of these two commands: cat /sys/class/i2c-adapter/i2c-3/name sensors -- Henrique Holschuh