The weird hang may not be related to the iwlwifi module after all. When running the vanilla 4.13.5 kernel from the mainline builds done at canonical I can observe normal shutdowns. The wifi related message is still there but the machine turns off normally!
The weird hang may not be related to the iwlwifi module after all. When running the vanilla 4.13.5 kernel from the mainline builds done at canonical I can observe normal shutdowns. The wifi related message is still there but the machine turns off normally!