@libondam-0

Response to comments 348, 349, 350:

The easiest, and I mean *easiest*, way is to hack alps.c for the raw
input from the touchpad and then "xinput setprop" to tune the X11 cooked
input.

For brand-new alps touchpads that don't adhere to any of the known
protocols, this is not sufficient and one needs to reverse engineer the
Windows driver behavior.  Seth Forshee showed us the way and then Ben
Garami figured out the the new extensions.  I seriously doubt this will
be the case for you.

Use Virtualbox or Qemu to create a guest OS.  I used Vista.  Seth showed
how to patch the I/O layer to dump the bytes going between the guest
driver and the hardware.  The catch is that the new alps drivers check
the BIOS ACPI DSDT tables to make sure it's an ALPS hardware module; if
not it drops into 3-byte PS2 mode.  Therefore the virtual ACPI DSDT
table must be updated to use the Hardware ID (HID) for the alps hardware
model (taken from the real ACPI DSDT table.)  If this sounds a little
complicated, it is.  Make sure you install the Alps driver into the
guest OS!

In the alps.sh from the 1.3 DLKM, there are some helper routines to get
the real DSDT and patch the qemu  acpi-dsdt.dsl table for the correct
HID.

There is another way to reverse engineer an ALPS touchpad, discovered by
Kevin Cernekee but it's not totally reliable.  It worked for him, and
cleaned up the E6430 code a good deal.   Email Kevin directly for how to
do it.

Dave

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/606238

Title:
  synaptic touchpad not recognized on dell latitude e6510 and others

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/606238/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to