ThinkPad Yoga 370

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Hey awesome developers!

I have just upgraded to a convertible laptop/tablet device, the
Thinkpad Yoga 370. When I convert it from laptop to tablet, this event
happens:

okt 09 16:34:01 denker kernel: thinkpad_acpi: unknown possible thermal
alarm or keyboard event received
okt 09 16:34:01 denker kernel: thinkpad_acpi: unhandled HKEY event 0x60f0
okt 09 16:34:01 denker kernel: thinkpad_acpi: please report the
conditions when this event happened to
ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx

This is the exact same as reported months before on this mailing list:
https://sourceforge.net/p/ibm-acpi/mailman/message/35803112/
Unfortunately, this went unanswered.

The event triggers twice during conversion to tablet mode, and twice
again during conversion back to laptop mode.

The keyboard mechanically disables itself during this conversion. On
Windows, the touchpad and trackpoint are disabled as well but that
happens in software, and since this event is unhandles it obviously
doesn't (yet) on linux.

Here's a demonstration video:
https://www.youtube.com/watch?v=nBAY0JJ0CLk (mymodel is not exactly
the same but close enoug).

This is the only thing that makes the convertible experience
incomplete. Everything else works perfectly (also thanks to
gnome-shell and wayland, which support all the touch stuff perfectly).

I hope someone can do

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