(In reply to Alberto Zacchetti from comment #28) > (In reply to Takashi Iwai from comment #27) > > The files are saved in /var/crash/* directory. Look into it. > > This directory is empty. I have looked the whole tree... You didn't rollback or boot from btrfs snapshot, right? If the directory is empty, it means that the crash dump didn't succeed. You should try at first without loading wifi module but just trigger the crash to see whether it works.