I believe I also have this bug on a HP Envy 13-ab002na. It is a vanilla
17.10 install.
As with @bwduncan the laptop becomes completely unresponsive to any
inputs and needs hard power off. The last thing in /var/log/kern.log is
iwlwifi Microcode SW error detected. It has happened 3 times in the
Based on skimming https://bugzilla.kernel.org/show_bug.cgi?id=195299 I
think this might be fixed upstream but didn't make it to kernel 4.13.
When will Ubuntu move to 4.14? :)
For now I am trying an older microcode (27.541033.0) but am not
optimistic..
** Bug watch added: Linux Kernel Bug Tracker
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