On Fri, Jun 19, 2009 at 03:16:55PM +0800, Li, Yan I wrote: > Not necessarily if we had followed the spec (I'm not sure of this) of > using i8042. The spec is irrelevant. What matters is what's implemented. Canonical found a case where our i8042 setup code varied from Windows and which fixed some hardware. Our ACPI implementation deviates wildly from the spec in some places because that's what the implemented platforms expect. The kernel exists to drive hardware, not adhere to some platonic ideal of how the hardware should behave. > Hope someone can help us do this test. I have already found loads of > touchpad drivers on net so I guess Windows can't drive a touchpad > until a driver is installed. Pure guess. Touchpads typically present as a PS/2 mouse until a specific driver is loaded, at which point they switch to a protocol that provides absolute cooirdinates and pressure. It would be virtually impossible to install most operating systems otherwise. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- 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
