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 < [email protected]> 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 <[email protected]> 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 > > > > > > -- > > coreboot mailing list: [email protected] > > https://www.coreboot.org/mailman/listinfo/coreboot > > -- > coreboot mailing list: [email protected] > https://www.coreboot.org/mailman/listinfo/coreboot >
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