asus-nb-wmi: wifi & brightness keys does not work on asus x200la laptop

asus-nb-wmi: wifi & brightness keys does not work on asus x200la laptop

[Michael Tokarev]

Hello.

It looks like asus-nb-wmi (or asus-wmi) does not handle some
(acpi?) keys on some recent asus laptops.  In particular, on
my x200la laptop, the mentioned keys does absolutely nothing
(neither showkeys nor xev shows them).  Also, wifi led is
always off.

Reportedly the same prob exists on another (but similar) series,
x200ma (which is basically the same but is built on celeron/atom
processor).

How can I help in debugging/implementing this support?

Thanks,

/mjt

Re: asus-nb-wmi: wifi & brightness keys does not work on asus x200la laptop

[Michael Tokarev]

01.10.2014 14:15, Michael Tokarev wrote:

> It looks like asus-nb-wmi (or asus-wmi) does not handle some
> (acpi?) keys on some recent asus laptops.  In particular, on
> my x200la laptop, the mentioned keys does absolutely nothing
> (neither showkeys nor xev shows them).  Also, wifi led is
> always off.
> 
> Reportedly the same prob exists on another (but similar) series,
> x200ma (which is basically the same but is built on celeron/atom
> processor).
> 
> How can I help in debugging/implementing this support?

Some additional info I forgot to include.

Kernel is 3.16.

There's no messages in dmesg about unknown keycodes when hitting these
buttons (pr_info("Unknown key...") in asus-wmi.c).

Thanks,

/mjt

Re: asus-nb-wmi: wifi & brightness keys does not work on asus x200la laptop

[Michael Tokarev]

On 10/01/2014 02:15 PM, Michael Tokarev wrote:
> Hello.
> 
> It looks like asus-nb-wmi (or asus-wmi) does not handle some
> (acpi?) keys on some recent asus laptops.  In particular, on
> my x200la laptop, the mentioned keys does absolutely nothing
> (neither showkeys nor xev shows them).  Also, wifi led is
> always off.
> 
> Reportedly the same prob exists on another (but similar) series,
> x200ma (which is basically the same but is built on celeron/atom
> processor).
> 
> How can I help in debugging/implementing this support?

Anyone know this stuff, maybe some hints about where to start?
I wrote this email almost 3 weeks ago, and so far there was no
single reply...  Does anyone actually maintain this module?

Thanks,

/mjt

Re: asus-nb-wmi: wifi & brightness keys does not work on asus x200la laptop

[Michael Tokarev]

On 10/20/2014 08:01 PM, Corentin Chary wrote:
> On Sun, Oct 19, 2014 at 2:18 PM, Michael Tokarev <mjt@tls.msk.ru <mailto:mjt@tls.msk.ru>> wrote:
>     On 10/01/2014 02:15 PM, Michael Tokarev wrote:
>     > Hello.
>     >
>     > It looks like asus-nb-wmi (or asus-wmi) does not handle some
>     > (acpi?) keys on some recent asus laptops.  In particular, on
>     > my x200la laptop, the mentioned keys does absolutely nothing
>     > (neither showkeys nor xev shows them).  Also, wifi led is
>     > always off.
>     >
>     > Reportedly the same prob exists on another (but similar) series,
>     > x200ma (which is basically the same but is built on celeron/atom
>     > processor).
>     >
>     > How can I help in debugging/implementing this support?
> 
>     Anyone know this stuff, maybe some hints about where to start?
>     I wrote this email almost 3 weeks ago, and so far there was no
>     single reply...  Does anyone actually maintain this module?
[]
> Well, I guess if you don't see anything in the output of asus-nb-wmi, the keys are unlikely to be handled by this module.
> I don't really have the time to look at your DSDT, but I guess you can start with:
> - http://lwn.net/Articles/391230/
> - http://lwn.net/Articles/367630/
> 
> Reading the DSDT you may understand what is happening to your brighntess  events.

Thank you for the warm words, Corentin ;)

This prompted me to pefrorm some research, and I also found this (which is quite old
already and I should have seen it before but apparently I didn't):

  http://forums.linuxmint.com/viewtopic.php?f=49&t=171563&start=20#p883644

(this is a similar model but with different cpu).  Their solution was to boot
with acpi_osi= (empty string) -- with that, all 4 keys (brightness up/down,
screen on/off and wifi key) works.

I don't know what it really means, and if linux should work around this somehow
by its own, but at least it looks like no new driver should be written.

Also I don't know if there's anything else which breaks this way.

What does this acpi_osi= (empty) does, anyway?

Thanks,

/mjt

Re: asus-nb-wmi: wifi & brightness keys does not work on asus x200la laptop

[Michael Tokarev]

On 10/20/2014 08:21 PM, Michael Tokarev wrote:
[]
> This prompted me to pefrorm some research, and I also found this (which is quite old
> already and I should have seen it before but apparently I didn't):
> 
>   http://forums.linuxmint.com/viewtopic.php?f=49&t=171563&start=20#p883644
> 
> (this is a similar model but with different cpu).  Their solution was to boot
> with acpi_osi= (empty string) -- with that, all 4 keys (brightness up/down,
> screen on/off and wifi key) works.

..but wifi LED doesn't work still.

Thanks,

/mjt