[Ubuntu Wiki] Update of "DebuggingTouchpadDetection" by anthonywong

[Ubuntu Wiki]

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Ubuntu Wiki" for change notification.

The "DebuggingTouchpadDetection" page has been changed by anthonywong:
http://wiki.ubuntu.com/DebuggingTouchpadDetection?action=diff&rev1=46&rev2=47

Comment:
more debugging tips

  
  Be sure to use the device id or name of your specific trackpad. You can list the devices on your computer using the "xinput" command.
  
- = Some general work flow for Triagers  =
+ = General work flow for Triagers and debugging tips  =
  
  If features of Touchpad like tapping and scrolling do '''not''' work at all, the user will not see the '''Touchpad''' Tab in System -> Administration -> Mouse in the Main menu. This means that Touchpad is misdetected as PS/2 mouse. Here the following workflow must be followed.
  
@@ -174, +174 @@

  ↳ TouchPad id=6	[slave  pointer  (2)] }}} Then, type: {{{
  xinput --list-props 6 }}}
   1. When debugging libinput, {{{libinput debug-events}}} would be helpful. The command is in the {{{libinput-tools}}} package.
+  1. If the Touchpad vendor is Synaptics, try loading {{{psmouse}}} kernel module with {{{synaptics_intertouch=0}}}.
+  1. If the Touchpad vendor is Elantech, try loading {{{psmouse}}} kernel module with {{{elantech_smbus=0}}}. This option only exists since Cosmic (linux v4.18 kernel).
  
  ----
  CategoryBugSquad CategoryDebugging CategoryCleanup