Comment 8 for bug 1472478

Sorry. No go on latest mainline kernel. (It gets worse. Touchscreen doesn't work at all!) Anyhoo, here's the output:

$ uname -a
Linux kneetm 4.2.0-040200rc2-generic #201507121935 SMP Sun Jul 12 23:36:39 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
$ sudo evtest /dev/input/event1
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x0 product 0x1 version 0x0
Input device name: "Power Button"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 116 (KEY_POWER)
Properties:
Testing ... (interrupt to exit)
^C

[No output from pressing button]

$ cat /sys/firmware/acpi/interrupts/ff_pwr_btn
       0 invalid

$