CPU3 may not have shut down cleanly: -110
only once so far I found the following, but suspend and resume still "worked" in this case. If one cpu isn't shut down, it draws more power though...
[ 907.076593] khugepaged entered refrigerator
[ 907.764232] psci: CPU3 may not have shut down cleanly (AFFINITY_INFO reports 0)
[ 907.771564] CPU3 may not have shut down cleanly: -110