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Francesco Fazzari, solo per avere un quadro della situazione, se c'è un problema a livello del kernel non si risolve nulla... i touchpad che non vanno ci sono e sono in agguato, purtroppo :(
Dopo aver avviato la live, posta l'output nel terminale di:
cat /proc/bus/input/devices
se nella lista appare qualche voce relativa a "Touchpad", allora significa che il kernel lo vede, altrimenti, dato che il kernel non lo vede, è normale che non vengano caricati i driver all'avvio del server x.
In aggiunta posta pure l'output di
xinput list
Prova poi a fare una cosa: metti in sospensione il sistema e poi premendo un tasto esci dalla sospensione: a volte il touchpad viene visto in ritardo, ma così torna a funzionare.... è un comportamento che ho visto su alcuni notebook insospettabili e che non capisco a cosa sia dovuto
kubuntu@kubuntu:~$ cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=21
B: SW=1
I: Bus=0019 Vendor=0000 Product=0003 Version=0000
N: Name="Sleep Button"
P: Phys=PNP0C0E/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=4000 0 0
I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=10000000000000 0
I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input3
U: Uniq=
H: Handlers=sysrq kbd event3
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7
I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input12
U: Uniq=
H: Handlers=kbd event4
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0
I: Bus=0011 Vendor=0002 Product=0001 Version=0063
N: Name="PS/2 Logitech Wheel Mouse"
P: Phys=isa0060/serio4/input0
S: Sysfs=/devices/platform/i8042/serio4/input/input11
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=0
B: EV=7
B: KEY=70000 0 0 0 0
B: REL=3
I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Asus WMI hotkeys"
P: Phys=asus-nb-wmi/input0
S: Sysfs=/devices/platform/asus-nb-wmi/input/input13
U: Uniq=
H: Handlers=rfkill kbd event6
B: PROP=0
B: EV=100013
B: KEY=80000 0 800000000000 0 0 a1606f00900000 8200027800501000 e000000000000 0
B: MSC=10
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel HDMI HDMI/DP,pcm=8"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:03.0/sound/card0/input16
U: Uniq=
H: Handlers=event7
B: PROP=0
B: EV=21
B: SW=140
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel HDMI HDMI/DP,pcm=7"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:03.0/sound/card0/input15
U: Uniq=
H: Handlers=event8
B: PROP=0
B: EV=21
B: SW=140
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel HDMI HDMI/DP,pcm=3"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:03.0/sound/card0/input14
U: Uniq=
H: Handlers=event9
B: PROP=0
B: EV=21
B: SW=140
I: Bus=0003 Vendor=0bda Product=57b4 Version=0012
N: Name="USB Camera"
P: Phys=usb-0000:00:14.0-5/button
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb2/2-5/2-5:1.0/input/input17
U: Uniq=
H: Handlers=kbd event10
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card1/input19
U: Uniq=
H: Handlers=event11
B: PROP=0
B: EV=21
B: SW=4
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card1/input18
U: Uniq=
H: Handlers=event12
B: PROP=0
B: EV=21
B: SW=10
I: Bus=0003 Vendor=046d Product=c03e Version=0110
N: Name="Logitech USB-PS/2 Optical Mouse"
P: Phys=usb-0000:00:1d.0-1.3/input0
S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input20
U: Uniq=
H: Handlers=mouse1 event13
B: PROP=0
B: EV=17
B: KEY=70000 0 0 0 0
B: REL=103
B: MSC=10
Invece per il comando xinput list
kubuntu@kubuntu:~$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech USB-PS/2 Optical Mouse id=10 [slave pointer (2)]
⎜ ↳ PS/2 Logitech Wheel 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)]
↳ Sleep Button id=8 [slave keyboard (3)]
↳ USB Camera id=9 [slave keyboard (3)]
↳ Asus WMI hotkeys id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]