Metodo 1
Navegar até o caminho Activities -> Applications -> System Tools -> System Settings -> Mouse and Toutch pad
Na aba Toutchpad, Habilitar a opção Enable mouse clicks with touchpad.
Método 2,
Habilitando em modo texto.
Utilizando o comando xinput:
O camando xinput é utilizado apra alterar o estado e configurações de dispositivos de entrada, dentre eles o touchpad, tecaldo e mouse.
1) Como root digite no terminal xinput :
[root@tux vinicius]# xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad 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)]
2) identificar o id do Synaptic
.
.
.
↳ SynPS/2 Synaptics TouchPad id=13 [slave pointer (2)]
.
.
.
No caso do Exmplo id=13.
3)digitar o comando xinput list-props 13 para listar as opções de configurações.
[root@tux vinicius]# xinput list-props 13
Device 'SynPS/2 Synaptics TouchPad':
Device Enabled (132): 1
Coordinate Transformation Matrix (134): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (257): 1
Device Accel Constant Deceleration (258): 2.500000
Device Accel Adaptive Deceleration (259): 1.000000
Device Accel Velocity Scaling (260): 12.500000
Synaptics Edges (261): 1774, 5496, 1658, 4742
Synaptics Finger (262): 25, 30, 256
Synaptics Tap Time (263): 180
Synaptics Tap Move (264): 247
Synaptics Tap Durations (265): 180, 180, 100
Synaptics ClickPad (266): 0
Synaptics Tap FastTap (267): 0
Synaptics Middle Button Timeout (268): 75
Synaptics Two-Finger Pressure (269): 282
Synaptics Two-Finger Width (270): 7
Synaptics Scrolling Distance (271): 112, 112
Synaptics Edge Scrolling (272): 0, 0, 0
Synaptics Two-Finger Scrolling (273): 1, 1
Synaptics Move Speed (274): 1.000000, 1.750000, 0.035606, 40.000000
Synaptics Edge Motion Pressure (275): 30, 160
Synaptics Edge Motion Speed (276): 1, 449
Synaptics Edge Motion Always (277): 0
Synaptics Off (278): 0
Synaptics Locked Drags (279): 0
Synaptics Locked Drags Timeout (280): 5000
Synaptics Tap Action (281): 0, 0, 0, 0, 1, 3, 2
Synaptics Click Action (282): 1, 1, 1
Synaptics Circular Scrolling (283): 0
Synaptics Circular Scrolling Distance (284): 0.100000
Synaptics Circular Scrolling Trigger (285): 0
Synaptics Circular Pad (286): 0
Synaptics Palm Detection (287): 0
Synaptics Palm Dimensions (288): 10, 200
Synaptics Coasting Speed (289): 20.000000, 50.000000
Synaptics Pressure Motion (290): 30, 160
Synaptics Pressure Motion Factor (291): 1.000000, 1.000000
Synaptics Grab Event Device (292): 1
Synaptics Gestures (293): 1
Synaptics Capabilities (294): 1, 0, 1, 1, 1, 1, 1
Synaptics Pad Resolution (295): 99, 59
Synaptics Area (296): 0, 0, 0, 0
Synaptics Noise Cancellation (297): 8, 8
Device Product ID (252): 2, 7
Device Node (253): "/dev/input/event5"
4) para habilitar o touchpad verifique se as opções "Device Enable" está setado para 1.
5) para habilitar o Tap Click (click utilizando o touchpad)
Altere o 5º valor da opção Synaptics Tap Action (281) para 1
Utilizando o comando abaixo como administrador:
[root@tux vinicius]# xinput --set-prop --type=int --format=8 "SynPS/2 Synaptics TouchPad" "Synaptics Tap Action" 0 0 0 0 1 0 0
Referencias:
Manual opçoes do synaptic mostradas com comando xinput list-props 13
http://www.x.org/archive/X11R7.5/doc/man/man4/synaptics.4.html
Outras fontes:
http://www.thinkwiki.org/wiki/Synaptics_TouchPad_driver_for_X
http://ubuntuforums.org/showthread.php?t=1419833
