Erm, sorry, my previous comment was again wrong. I disabled the patch in series.conf (although not mentioned in changelog, my bad). So it's with the original kernel state plus a debug patch. It's still a mystery why it behaved so differently. That said, please go ahead testing with a new kernel in OBS home:tiwai:bsc1103356-dbg2 repo. This is also with the revert of the revert, i.e. should be buggy.