Created attachment 528284 [details]
dmesg

The touchpad in Dell Vostro 1015 doesn't have touchpad features such as scrolling to the right of the pad. X doesn't use the synaptics driver but see it as "PS/2 Generic Mouse", probably because "/lib/udev/input_id /class/input/event4" says "ID_INPUT=1 ID_INPUT_MOUSE=1", probably because of how the kernel detects it.

dmesg:

[    1.252173] i8042: PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    1.268797] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.268804] serio: i8042 AUX port at 0x60,0x64 irq 12
[    1.268894] mousedev: PS/2 mouse device common for all mice

[    2.251704] usb 4-1: New USB device found, idVendor=0cf3, idProduct=3002
[    2.251709] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    2.286942] input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input4

/proc/bus/input/devices:
I: Bus=0011 Vendor=0002 Product=0001 Version=0000
N: Name="PS/2 Generic Mouse"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input4
U: Uniq=
H: Handlers=mouse0 event4 
B: PROP=0
B: EV=7
B: KEY=70000 0 0 0 0 0 0 0 0
B: REL=3

evtest:
Input driver version is 1.0.1
Input device ID: bus 0x11 vendor 0x2 product 0x1 version 0x0
Input device name: "PS/2 Generic Mouse"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 272 (BTN_LEFT)
    Event code 273 (BTN_RIGHT)
    Event code 274 (BTN_MIDDLE)
  Event type 2 (EV_REL)
    Event code 0 (REL_X)
    Event code 1 (REL_Y)

I would expect that the kernel somehow detected it as a synaptics device.

kernel-PAE-2.6.40.6-0.fc15.i686, but same problem seen with 3.1 rc8.