(In reply to Neil F Brown from comment #2) > Thanks for the trace. > Can you tell me how it corresponds to the symptom? Sure, error from dmesg occured before end of thare > Did you start the trace before there was a problem or only after? > The trace seems to run for about 4 hours (14585 seconds). > from 07:27:30 to 11:30:35, though I'm not sure what timezone. > When in that time did the problem occur? Sure, error from dmesg occurred before end of trace (few minutes), trace was obviously captured before and during time issue occurred, do you assume that capturing trace after issue would be somehow useful? Timezone is CEST.