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I wanted to activate additional gestures on my Dell Vostro laptop, but I did worse than better because my touchpad no longer works at all. It's a PS / 2 Generic Mouse but I don't know if it should use the Synaptics or Libinput drivers. I tried to uninstall one or the other, I even lost my keyboard, which I found since phew! But the touchpad could not find it. I'm on Ubunutu 20.04

~$ xinput list

⎡ 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)]
⎜   ↳ MX Master 3 Mouse                         id=15   [slave  pointer  (2)]
⎣ Virtual core keyboard                     id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Video Bus                                 id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate           id=9    [slave  keyboard (3)]
    ↳ Intel HID events                          id=10   [slave  keyboard (3)]
    ↳ Dell WMI hotkeys                          id=11   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=12   [slave  keyboard (3)]
    ↳ MX Master 3 Keyboard                      id=14   [slave  keyboard (3)]

~$ xinput list-props 13

Device 'PS/2 Generic Mouse':
    Device Enabled (196):   1
    Coordinate Transformation Matrix (198): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
    libinput Natural Scrolling Enabled (333):   0
    libinput Natural Scrolling Enabled Default (334):   0
    libinput Scroll Methods Available (335):    0, 0, 1
    libinput Scroll Method Enabled (336):   0, 0, 1
    libinput Scroll Method Enabled Default (337):   0, 0, 1
    libinput Button Scrolling Button (338): 2
    libinput Button Scrolling Button Default (339): 2
    libinput Middle Emulation Enabled (340):    0
    libinput Middle Emulation Enabled Default (341):    0
    libinput Accel Speed (342): 0.257353
    libinput Accel Speed Default (343): 0.000000
    libinput Accel Profiles Available (344):    1, 1
    libinput Accel Profile Enabled (345):   1, 0
    libinput Accel Profile Enabled Default (346):   1, 0
    libinput Left Handed Enabled (347): 0
    libinput Left Handed Enabled Default (348): 0
    libinput Send Events Modes Available (318): 1, 0
    libinput Send Events Mode Enabled (319):    0, 0
    libinput Send Events Mode Enabled Default (320):    0, 0
    Device Node (321):  "/dev/input/event3"
    Device Product ID (322):    2, 1
    libinput Drag Lock Buttons (349):   <no items>
    libinput Horizontal Scroll Enabled (350):   1

~$ cat /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 event3 
B: PROP=1
B: EV=7
B: KEY=70000 0 0 0 0
B: REL=3
...
  • You haven't said what packages you installed; but given you had issues, have you tried reversing the changes you made (ie. uninstalling those changes). You can view your command history, or if you did it view GUI you can always look in apt logs (/var/log/apt/history.log). That would be my suggested fix; reverse whatever you did (which you didn't give any specific details on) – guiverc Jun 30 at 6:22
  • here are the packages i installed: apt install xserver-xorg-input-synaptics / apt-get install libinput-tools / apt-get install xdotool wmctrl. I'm new to Ubuntu, I confess that I did anything – jylyknight Jun 30 at 6:33
  • From the output of xinput find your touchpad id.Then run xinput --enable id.And if that doesn't work, I don't think the problem is about software. – Parsa Mousavi Jun 30 at 6:38
  • xinput --enable 13 for me, doesn't work – jylyknight Jun 30 at 6:46
  • Welcome to Askubuntu. Please do not add answers when adding information. Instead edit your question with the extra information. – To Do Jun 30 at 7:11

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