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
$
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https://bugs.launchpad.net/bugs/1472478
Title:
Power button not working on Dell Venue 11 Pro 7140
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