#10417 NORM Future : Enable Synaptics mode for CL1A/CL1B/CL1C touchpad

Zarro Boogs per Child bugtracker at laptop.org
Mon Sep 19 14:17:36 EDT 2011


#10417: Enable Synaptics mode for CL1A/CL1B/CL1C touchpad
---------------------------------------+------------------------------------
           Reporter:  martin.langhoff  |       Owner:  cjb           
               Type:  enhancement      |      Status:  new           
           Priority:  normal           |   Milestone:  Future Release
          Component:  distro           |     Version:  not specified 
         Resolution:                   |    Keywords:                
        Next_action:  never set        |    Verified:  0             
Deployment_affected:                   |   Blockedby:                
           Blocking:                   |  
---------------------------------------+------------------------------------

Comment(by pgf):

 btw, i just spotted this, from comment #1:
 {{{
 S/R -- if we are resuming on TP activity the "first stroke" is missed.
 This is a regression. With 'our' driver the first stroke is usually
 registered (but acts more like a jump).
 }}}

 this may be a result of running the touchpad in a longer packet-size mode.
 from my earlier investigation, the synaptics pad can buffer 3 bytes.
 (ALPS just buffers 1.)  if the pad is sending 3 byte packets, you'll have
 one whole packet buffered coming out of suspend.  in 6-byte mode, you'd
 only buffer half a packet, which would cause more loss, and will likely
 cause a driver resync.

-- 
Ticket URL: <http://dev.laptop.org/ticket/10417#comment:12>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system


More information about the Bugs mailing list