[Bug 1003053] Re: mouseemu does not detect Synaptic touchpad on Macbookpro 8, 1

[monochromec]

Seems to be related to mouse detection in the function scan_for_devs ().

The if branch starting with

"	if (test_bit(EV_REL, bit)) {
				int i;
				/* our own virtual mouse (on rescans)*/
				if (id[ID_PRODUCT] == 0x1E && id[ID_VENDOR] == 0x1F) {
					close(fd);
					continue;"

is never entered on my 8.1 (discovered this after suitable
instrumentation of the code in the function). As a result, no mouse is
registered as a virtual device and event_parse doesn't have a chance to
detect clicks in connection with pressing of modifier keys as it's
intended with this tool.

Don't know enough about uinput / event handling in connection with
Apple-specific hardware to investigate further. If it helps, here an
excerpt of the lsusb command:

Bus 001 Device 005: ID 05ac:0253 Apple, Inc. Internal Keyboard/Trackpad (ISO)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x05ac Apple, Inc.
  idProduct          0x0253 Internal Keyboard/Trackpad (ISO)
  bcdDevice            1.18
  iManufacturer           1 Apple Inc.
  iProduct                2 Apple Internal Keyboard / Trackpad
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           84
    bNumInterfaces          3
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               40mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      1 Keyboard
      iInterface              3 Apple Internal Keyboard
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode           13 International (ISO)
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     156
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x000a  1x 10 bytes
        bInterval               8
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              4 Touchpad
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      27
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               2
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      2 Mouse
      iInterface              4 Touchpad
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval               8
Device Status:     0x0000
  (Bus Powered)

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https://bugs.launchpad.net/bugs/1003053

Title:
  mouseemu does not detect Synaptic touchpad on Macbookpro 8,1

Status in “mouseemu” package in Ubuntu:
  New

Bug description:
  Mouseemu incorrectly  interprets the touchpad of a 2012 MacbookPro 8.1 as a keyboard.
  As a result, no mouseclick is recorded and intpreted in function report_click when pressed with the specified modifier key (option -middle or right). 

  I'll provide more info once I have time to dig deeper into the source
  code.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: mouseemu 0.16-0ubuntu7
  ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16
  Uname: Linux 3.2.0-24-generic x86_64
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: amd64
  Date: Tue May 22 20:20:21 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: mouseemu
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.default.mouseemu: [modified]
  modified.conffile..etc.init.d.mouseemu: [modified]
  mtime.conffile..etc.default.mouseemu: 2012-05-19T17:23:41.784331
  mtime.conffile..etc.init.d.mouseemu: 2012-05-22T19:51:11.728629

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