Dear Linus, dear Len,
I heard that you both have a Dell XPS13. I got the “revision” 9360, and
installed Debian Stretch/testing on it with Linux 4.8.15 and Linux 4.9-rc8.
When pressing the power button the GNOME dialog, asking what to do
(restart, power off, …) doesn’t appear.
Neither `xev` nor `acpi_listen` show something, so I submitted ticket
#190871 [1], and Lv already looked at it.
Just to make sure, that it is really a Linux problem, does the power
button work for you?
Kind regards,
Paul
[1] https://bugzilla.kernel.org/show_bug.cgi?id=190871
[2]
http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_4.4.0-57.78/changelog