On 02/24/2012 02:37 PM, Seth Forshee wrote: > On Fri, Feb 24, 2012 at 02:27:06PM -0800, Chase Douglas wrote: >> On 02/24/2012 01:31 PM, Dmitry Torokhov wrote: >>> On Friday, February 24, 2012 12:04:04 PM Randy Dunlap wrote: >>>> (b) My Toshiba Portege laptop has a touchpad on/off button. Is that >>>> supported? >>> >>> Kernel probably emits one of KEY_TOUCHPAD_* for it; whether it is handled >>> in userspace I do not know. showkey doesn't show me any kbd scancode when I press that little key. :( At least using 'xinput set-prop 15 "Device Enabled" 0' (from the Ubuntu community web page) does work. That's helpful. >> I have heard from some of our engineers who have looked into this >> that the interface for these buttons is not standardized. Sometimes >> the buttons turn off the touchpad in hardware. Sometimes they emit >> events that tell the OS to turn it off, and the OS needs to know how >> to handle it. >> >> On top of that, LEDs are sometimes there to tell you if the trackpad >> is on or off. These are also not standardized. Sometimes they are >> hooked up to the hardware, and when the hardware is off they go off. >> Sometimes they are just a plain old LED and the OS needs to turn it >> on and off. >> >> Fun... > > I've worked with a few Toshibas, and while there's quite a bit of > variation within Toshiba models, all the ones I've seen report a key > event rather than disabling the touchpad in firmware. Some of them > report the key on the AT keyboard while others use a Toshiba-specific > ACPI interface. > > Randy, if you can't find a key event currently being emitted on your > machine, I have some patches for toshiba_acpi to enable hotkeys for some > Toshibas [1]. You might give them a try. > > Seth > > [1] https://lkml.org/lkml/2012/1/18/328 OK, I'll take a look at those patches. Thanks, everyone. -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
