[Bug 551234] Re: touchpad doesn't reconnect after resume: Synaptics ps2

[Peter Petrakis]

This fix has finally been distilled and has been proposed for Linus to
pull:

http://git.kernel.org/?p=linux/kernel/git/dtor/input.git;a=commit;h=ef110b24e28f36620f63dab94708a17c7e267358

The root cause is we have a synaptics touchpad device that fails to be
identified as a genuine synaptics device, so the ps2 subsystem fails back
to the generic psmouse driver.

The psmouse driver does *not* issue a reset to device on reconnect, which
is ps2 slang for resume. Had it been probed correctly, it would have received
a reset on reconnect from the synaptics driver.

So we've succeeded in making the psmouse driver a little more robust but have
yet to resolve the root cause, which is to correctly identify and configure the touchpad
as a genuine synaptic device.

We're working on getting the datasheet for this part.

-- 
touchpad doesn't reconnect after resume: Synaptics ps2
https://bugs.launchpad.net/bugs/551234
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