Comment 9 for bug 730823

Hmm, well the kernel and X seem to be detecting the touchpad device and hooking up its buttons...

[ 16.220] (--) SynPS/2 Synaptics TouchPad: finger width range 0 - 15
[ 16.220] (--) SynPS/2 Synaptics TouchPad: buttons: left right double triple
[ 16.292] (--) SynPS/2 Synaptics TouchPad: touchpad found
[ 16.292] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 16.324] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio2/input/input7/event7"

userspace configuration looks sane as well

 /desktop/gnome/peripherals/Logitech@32@USB@32@Optical@32@Mouse:
  device_type = mouse
 /desktop/gnome/peripherals/SynPS@47@2@32@Synaptics@32@TouchPad:
  maximum_speed = 2.0668692588806152
  tap_fast_tap = false
  two_finger_vertical_scrolling = true
  two_finger_horizontal_scrolling = true
  acceleration_factor = 0.096385538578033447
  device_type = touchpad
  palm_detection = true
  off = 0
 /desktop/gnome/peripherals/mouse:
  motion_acceleration = -1
  cursor_font = (no value set)
  drag_threshold = 8
  double_click = 400
  locate_pointer = false
  left_handed = false
  motion_threshold = -1
  single_click = true
  cursor_theme = DMZ-White
  cursor_size = 18
 /desktop/gnome/peripherals/touchpad:
  disable_while_typing = true
  config_migration_needed = true
  touchpad_enabled = true
  tap_to_click = true
  horiz_scroll_enabled = true
  scroll_method = 2

Loss of buttons sounds sort of like a device conflict in ACPI, but I don't see any errors or multiply-assigned device nodes.