On Fri, Mar 20, 2009 at 10:46:31PM -0700, Dmitry Torokhov wrote:

On Thursday 19 March 2009 22:52:39 Arjan Opmeer wrote:

quoted

There exist laptops with Elantech touchpads where switching to absolute
mode does not happen, although writing the configuration register
succeeds without error. Reading back the register afterwards reveils
that the absolute mode bit is not set as if masked out by the touchpad
firmware.

Always read back register 0x10, make sure that for hardware version 1
the absolute mode bit is actually set and fail otherwise. This prevents
the case where the touchpad is claimed by the Elantech driver but is
nonetheless not working.

Makes sense, will apply. Although, have you tried repeating the switch or
maybe issuing full reset before trying again?

No. I am sorry. I had this problem reported by two different users that both
kind of lost interest when I pointed out that the driver as it stands was
not able to support their laptops. Without access to the hardware and
without users willing to test I am rather stuck.

So I thought the sensible thing left to do was to put an extra check and
warning in the driver to prevent other users from falling in that trap where
their touchpad isn't working.


Arjan