Re: [coreboot] Can boards wake up from S3/4/5 by specific keystroke

[Marshall Dawson]

Zheng,

I suspect it's a special keyboard as you suggested.  Here is some text from
the M93/p Tiny User Guide:

*Note: The USB 3.0 connector 4 supports the smart power on feature. If you
connect aLenovo-recommended USB 1.1 keyboard to this connector, you can
power on the computer or wake it upfrom S4 hibernation mode by pressing
Alt+P on the keyboard. Ensure that you use a Lenovo-recommendedkeyboard
that supports the smart power on feature.*

The last sentence seems to stress that you need a Lenovo keyboard, or maybe
they've partnered with others as well.  I wonder if the KB is made aware of
the sleep state, and then only passes the keystroke through if it's Alt-p.

Thanks,
Marshall

On Thu, Sep 1, 2016 at 2:26 AM, Zoran Stojsavljevic <
[e-mail]> wrote:
> Hello Zheng,
>
> Since you are asking again, I looked into this problem, in order to
> understand the whole PM domain more... Here is my assessment, so I
> would advise you to try several options for such a problem.
>
> I would advise to you the following steps (which, unfortunately, have
> nothing to do with Coreboot for the initial test):
>
> [1] To install the latest BIOS for ThinkCentre M6600q (Lenovo), or to
> use the current, present in the platform;
> [2] To drive CMOS settings to PM (Power Management) and check if PM is
> properly enabled in BIOS (this is a MUST!);
> [3] Then, if both steps are done, to install Ubuntu or Fedora Linux
> distros (I personally prefer Fedora);
> [4] To install the following package in given distro: pm-utils!
> https://pm-utils.freedesktop.org/wiki/
> http://pm-utils.freedesktop.org/releases/pm-utils-1.4.1.tar.gz
> [5] Then to configure, make and install this package (I did it on my
> VM F24 for this purpose, traces imported):
> [zoran@localhost Downloads]$ cp pm-utils-1.4.1.tar.gz
> /home/zoran/projects/pm-utils
> [zoran@localhost Downloads]$ cd /home/zoran/projects/pm-utils
> /home/zoran/projects/pm-utils
> [zoran@localhost pm-utils]$ ls -al
> total 212
> drwxrwxr-x. 2 zoran zoran   4096 Sep  1 09:32 .
> drwxrwxr-x. 8 zoran zoran   4096 Sep  1 08:59 ..
> -rw-rw-r--. 1 zoran zoran 208687 Sep  1 09:32 pm-utils-1.4.1.tar.gz
> [zoran@localhost pm-utils]$ tar -xf pm-utils-1.4.1.tar.gz
> [zoran@localhost pm-utils]$ cd pm-utils-1.4.1/
> [zoran@localhost pm-utils-1.4.1]$ ./configure
> [zoran@localhost pm-utils-1.4.1]$ make
> [zoran@localhost pm-utils-1.4.1]$ sudo make install
> [zoran@localhost pm-utils-1.4.1]$ which pm-suspend
> /usr/local/sbin/pm-suspend <<======================== S3 state
> [zoran@localhost pm-utils-1.4.1]$ which pm-hibernate
> /usr/local/sbin/pm-hibernate <<======================= S4 state
>
> And then try to exercise given commands, and to revive platform using
> keyboard/mouse wake up.
>
> We'll go from there, and we'll try to debug ThinkCentre M6600q
> (Lenovo) if it does not work at this stage.
>
> Maybe somebody can advise you with Coreboot solution... But
> essentially, above proposed method by me should work!
>
> Best Regards,
> Zoran
>
> On Thu, Aug 25, 2016 at 1:05 PM, Zheng Bao  wrote:
> > All,
> >
> > Some customers says ThinkCentre M6600q (lenovo) has the feature of wake
>
> up the system by pressing ALT-P on USB keyboard.
> > I am wondering how it is implemented? Is it done in chipset, BIOS, or a
>
> special keyboard?
> > Or when the BIOS wakeup, it reads the keystroke to see if it matches the
>
> pre-defined key. Does it sounds reasonable?
> > Zheng