Arch Linux

Arkamririon

Member

From: Germany

Registered: 2005-12-27

Posts: 35

Power Button Huawei Matebook

Hi, I'm trying to wake up the Matebook from suspend with the Power Button which is currently not working (have to use the keyboard).

There is no event when pressing the button that can be seen via "xev", "acpi_listen" or "journalctl -f". These commands work for other buttons/events but no output for the power button.
Also tried pressing the button longer but after 20 or 30 seconds the Matebook then just power down.

I also tried evtest:

No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:	AT Raw Set 2 keyboard
/dev/input/event1:	Chicony Huawei Folio keyboard
/dev/input/event2:	Chicony Huawei Folio keyboard Touchpad
/dev/input/event3:	Chicony Huawei Folio keyboard
/dev/input/event4:	Lid Switch
/dev/input/event5:	Sleep Button
/dev/input/event6:	Power Button
/dev/input/event7:	Power Button
/dev/input/event8:	Intel HID events
/dev/input/event9:	Intel Virtual Button driver
/dev/input/event10:	PC Speaker
/dev/input/event11:	Video Bus
/dev/input/event12:	HDA Intel PCH Mic
/dev/input/event13:	HDA Intel PCH Front Headphone
/dev/input/event14:	HDA Intel PCH HDMI/DP,pcm=3
/dev/input/event15:	HDA Intel PCH HDMI/DP,pcm=7
/dev/input/event16:	HDA Intel PCH HDMI/DP,pcm=8
/dev/input/event17:	Wacom HID 4834 Pen
/dev/input/event18:	Wacom HID 4834 Finger

There are two events for the power button (6+7) and also an event for the intel virtual button driver, but when testing these events there is again no output.

For "dmesg | grep ACPI" the relevant output is:

[   13.372881] ACPI: Lid Switch [LID0]
[   13.372983] ACPI: Sleep Button [SLPB]
[   13.373233] ACPI: Power Button [PWRB]
[   13.373288] ACPI: Power Button [PWRF]

The Button is also not in /proc/acpi/wakeup

Device	S-state	  Status   Sysfs node
PEG0	  S4	*disabled
PEGP	  S4	*disabled
PEG1	  S4	*disabled
PEGP	  S4	*disabled
PEG2	  S4	*disabled
PEGP	  S4	*disabled
RP09	  S4	*disabled
PXSX	  S4	*disabled
RP10	  S4	*disabled
PXSX	  S4	*disabled
RP11	  S4	*disabled
PXSX	  S4	*disabled
RP12	  S4	*disabled
PXSX	  S4	*disabled
RP13	  S4	*disabled
PXSX	  S4	*disabled
RP01	  S4	*disabled
PXSX	  S4	*disabled
RP02	  S4	*disabled
PXSX	  S4	*disabled
RP03	  S4	*disabled  pci:0000:00:1c.0
PXSX	  S4	*enabled   pci:0000:01:00.0
RP04	  S4	*disabled
PXSX	  S4	*disabled
RP05	  S4	*disabled
PXSX	  S4	*disabled
RP06	  S4	*disabled
PXSX	  S4	*disabled
RP07	  S4	*disabled
PXSX	  S4	*disabled
RP08	  S4	*disabled
PXSX	  S4	*disabled
RP17	  S4	*disabled
PXSX	  S4	*disabled
RP18	  S4	*disabled
PXSX	  S4	*disabled
RP19	  S4	*disabled
PXSX	  S4	*disabled
RP20	  S4	*disabled
PXSX	  S4	*disabled
RP14	  S4	*disabled
PXSX	  S4	*disabled
RP15	  S4	*disabled
PXSX	  S4	*disabled
RP16	  S4	*disabled
PXSX	  S4	*disabled
GLAN	  S4	*disabled
XHC	  S4	*enabled   pci:0000:00:14.0
XDCI	  S4	*disabled
HDAS	  S4	*disabled  pci:0000:00:1f.3

I tried many combinations of values for kernel parameters "acpi_osi" and "acpi_os_name" without success so far.
Also i extracted the DSDT and decompiled it:

https://filebin.ca/3KxiSlfnjswW/DSDT_with_error.dsl

Trying to solve the errors recompiling it leads me to this DSDT (but I'm not experienced with it, at least it compiles now without error)

https://filebin.ca/3Kxscp97f2dG/DSDT_fixed.dsl

But using the new DSDT makes no difference. What I noticed there is no mention of  PWRB or PWRF in the DSDT.
I just get no event from the button.
My question now is, what more can I do to investigate the issue and solve it?

pttrsmrt

Member

Registered: 2015-10-10

Posts: 1

Re: Power Button Huawei Matebook

Hi, I'm also trying to get the power button to work on my Matebook, with the exact same outputs as you. I'm afraid I don't (yet) have a solution, but would like to investigate this further. Does the video, volume buttons and fingerprint scanner work on yours?

I've also looked at DSDT (briefly) with no luck, but I think it rather the kernel is where we should look. The Surface Pro had a similar issue, and then a few lines in `/drivers/hid/hid-core.c` seemed to do the trick:

https://aur.archlinux.org/cgit/aur.git/ … s-surface4

If someone could point me in the right direction of how to find *which* lines should be added, I think we might be able to get the buttons working. Possibly even the webcam!

Relevant links:
https://aur.archlinux.org/packages/linux-lts-surface4/
https://github.com/matthewwardrop/linux-surfacepro3
https://www.reddit.com/r/SurfaceLinux/c … ro_34book/

Sotneo

Member

Registered: 2017-06-09

Posts: 1

Re: Power Button Huawei Matebook

I have the same issues with Matebook. Power button/Volume buttons/Fingerprint(no hope) is not working. Lid is working (It is need to create lid acpi event).
I think something with intel virtual button driver, but I can't find any helpful info. Some time ago after many pressed button, I received an unknown event from it in dmesg, but I can't reproduce it now.

Last edited by Sotneo (2017-06-09 17:29:04)

riceball

Member

Registered: 2017-09-14

Posts: 1

Re: Power Button Huawei Matebook

The power button has worked after upgrade to linux kernal 4.13 for Matebook E.
But how to make the backlight Fn button(Fn+F1/F2) work? It is always reduce the backlight after Fn pressed.

Xeollron

Member

Registered: 2018-04-13

Posts: 1

Re: Power Button Huawei Matebook

Stumbled across this github repo of some patches for the acpi tables for the matebook, one of them is for the hardware buttons, I attempted using it and was able to recompile DSTS without error and load the patched version but I still have no luck with the buttons.
This might point someone in the right direction or work for you.
I'll keep playing around with it and update if I make any progress.