I don't have any touchpad menu in "mouse and touchpad" settings.

Can you give the output of:

lsb_release -a; uname -a; lsmod

Thanks

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
Linux awe-Inspiron-N5110 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Module Size Used by
snd_hda_codec_hdmi 32474 4
snd_hda_codec_idt 70795 1
parport_pc 32866 0
ppdev 17113 0
rfcomm 47604 12
bnep 18281 2
arc4 12529 2
dell_wmi 12681 0
sparse_keymap 13890 1 dell_wmi
dell_laptop 18119 0
dcdbas 14490 1 dell_laptop
snd_hda_intel 33773 5
snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
snd_hwdep 13668 1 snd_hda_codec
snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13324 0
uvcvideo 72627 0
videodev 98259 1 uvcvideo
snd_rawmidi 30748 1 snd_seq_midi
v4l2_compat_ioctl32 17128 1 videodev
snd_seq_midi_event 14899 1 snd_seq_midi
snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event
snd_timer 29990 2 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
iwlwifi 332525 0
mac_hid 13253 0
btusb 18288 2
mac80211 506816 1 iwlwifi
bluetooth 180104 23 rfcomm,bnep,btusb
i915 473035 3
psmouse 87692 0
snd 78855 20 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
nouveau 774641 0
serio_raw 13211 0
mei 41616 0
ttm 76949 1 nouveau
mxm_wmi 12979 1 nouveau
drm_kms_helper 46978 2 nouveau,i915
wmi 19256 2 dell_wmi,mxm_wmi
soundcore 15091 1 snd
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
drm 242038 6 nouveau,i915,ttm,drm_kms_helper
cfg80211 205544 2 iwlwifi,mac80211
i2c_algo_bit 13423 2 nouveau,i915
video 19596 2 nouveau,i915
lp 17799 0
parport 46562 3 parport_pc,ppdev,lp
ums_realtek 18248 0
usb_storage 49198 1 ums_realtek
uas 18180 0
r8169 62099 0

In what way do you want to manipulate the touchpad, maybe we can advise...

I can't disable the tap-to-click.

http://askubuntu.com/questions/161420/disabling-one-finger-tap-to-click-but-keep-two-finger-tap-ubuntu-12-04

Not sure, this is my xinput:

⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ PS/2 Generic Mouse id=13 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Video Bus id=8 [slave keyboard (3)]
    ↳ Power Button id=9 [slave keyboard (3)]
    ↳ Sleep Button id=10 [slave keyboard (3)]
    ↳ Laptop_Integrated_Webcam_HD id=11 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
    ↳ Dell WMI hotkeys id=14 [slave keyboard (3)]

PS/2 Generic Mouse is the issue

Here it is:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/606238/comments/144

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/606238/comments/147

Can someone show how this is done.