Re: Acer-WMI disables touchpad and other issues

[joeyli <jlee@suse.com>]

於 四，2012-09-13 於 17:03 +0100，Matthew Garrett 提到：
> On Thu, Sep 13, 2012 at 09:47:06AM -0600, Nathanael D. Noblet wrote:
> > Hello Joey li,
> > 
> > On 09/13/2012 04:05 AM, joeyli wrote:
> > >On the other hand,
> > >I checked your dmideocde on brc#848720, the 0x82 is the RIGHT acpi code
> > >to you for touchpad_toggle key, that means acer-wmi should emit
> > >KEY_TOUCHPAD_TOGGLE to userland. There have another thing also listen
> > >the KEY_TOUCHPAD_TOGGLE and do the change. I checked the
> > >gnome-settings-daemon, it just show up OSD but didn't change touchpad
> > >status.
> > 
> > I was discussing this with Matthew Garrett in #fedora-kernel. He's
> > telling me that if the hardware does the enabling/disabling that it
> > should not emit _TOGGLE, but that it should emit KEY_TOUCHPAD_ON or
> > KEY_TOUCHPAD_OFF instead. I'm in no place to know one way or the
> > other. I've CC'd him on this so the discussion of the issue can
> > continue to figure out what the source problem is.
> 
> Right - TOUCHPAD_TOGGLE is a request from the hardware that the desktop 
> environment change the state. In this case hitting the key is causing 
> the hardware to change its state directly, and therefore it should just 
> be sending KEY_TOUCHPAD_ON or KEY_TOUCHPAD_OFF.
> 

Got it!
We need check the DSDT for look at if there have any wmi used to grab
the touchpad status.


Thanks
Joey Lee