I tried with 4.5.7, nothing changes with WiFi on or off
However, back to the original problem, while playing with WiFi, I discovered that 4.5.7 was now freezing during shutdown (reboot okay). So, I then tried removing "acpi=off noapic" again, and 4.5.7 was now able to reboot and shutdown. But as before, any later kernel now hangs during both reboot and shutdown.
So, in summary:
- with "acpi=off noapic", all kernels can reboot but hang during shutdown
I tried with 4.5.7, nothing changes with WiFi on or off
However, back to the original problem, while playing with WiFi, I discovered that 4.5.7 was now freezing during shutdown (reboot okay). So, I then tried removing "acpi=off noapic" again, and 4.5.7 was now able to reboot and shutdown. But as before, any later kernel now hangs during both reboot and shutdown.
So, in summary:
- with "acpi=off noapic", all kernels can reboot but hang during shutdown