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Lubuntu 26.04 on HP Chromebook x2 - Trackpad not working correctly

Lubuntu 26.04 on HP Chromebook x2 - Trackpad not working correctly

Chromebook in question: HP Chromebook x2 - touchscreen tablet with detachable keyboard.

Following the guides on mrchromebox.tech, I was able to get Lubuntu installed. Everything is working great except the trackpad. The cursor "warps" to the corresponding location on the screen to wherever I touch the touchpad (if I touch the top left of the touchpad the cursor instantly moves to the top left of the screen) and it constantly clicks and drags as I move my finger around the touchpad.

Touchpad in question:

keyboard and mouse settings showing the touchpad on the Chromebook

I haven't used Linux in a decade or so so you'll have to excuse my ignorance. I used AI to give some bash commands for the below info. Let me know if I can provide more info.

user@chris-soraka:~$ 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/pci0000:00/0000:00:1f.0/PNP0C09:00/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0 
B: PROP=0
B: EV=21
B: SW=1

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/platform/LNXPWRBN:00/input/input1
U: Uniq=
H: Handlers=kbd event1 
B: PROP=0
B: EV=3
B: KEY=8000 10000000000000 0

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/pci0000:00/acpi.video_bus.0/input/input21
U: Uniq=
H: Handlers=kbd event10 
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Intel Virtual Buttons"
P: Phys=
S: Sysfs=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/INT33D6:00/input/input22
U: Uniq=
H: Handlers=kbd event11 
B: PROP=0
B: EV=13
B: KEY=2000000000000 0 0 0 0 1000000000000 0 201c000000000000 0
B: MSC=10

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Intel Virtual Switches"
P: Phys=
S: Sysfs=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/INT33D6:00/input/input23
U: Uniq=
H: Handlers=event12 
B: PROP=0
B: EV=21
B: SW=2

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="AVS HDMI HDMI/DP"
P: Phys=ALSA
S: Sysfs=/devices/platform/avs_hdaudio.22.auto/sound/card3/input24
U: Uniq=
H: Handlers=event13 
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="AVS HDMI HDMI/DP,pcm=1"
P: Phys=ALSA
S: Sysfs=/devices/platform/avs_hdaudio.22.auto/sound/card3/input25
U: Uniq=
H: Handlers=event14 
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="AVS HDMI HDMI/DP,pcm=2"
P: Phys=ALSA
S: Sysfs=/devices/platform/avs_hdaudio.22.auto/sound/card3/input26
U: Uniq=
H: Handlers=event15 
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="AVS I2S ALC5663 Headset Jack"
P: Phys=ALSA
S: Sysfs=/devices/platform/avs_rt5663.21.auto/sound/card4/input27
U: Uniq=
H: Handlers=kbd event16 
B: PROP=0
B: EV=23
B: KEY=40 0 0 0 0 0 0 1000000000 c000000000000 0
B: SW=14

I: Bus=0018 Vendor=2d1f Product=4877 Version=0100
N: Name="WCOMCOHO:00 2D1F:4877"
P: Phys=i2c-WCOMCOHO:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-WCOMCOHO:00/0018:2D1F:4877.0006/input/input35
U: Uniq=
H: Handlers=mouse2 event5 
B: PROP=2
B: EV=1b
B: KEY=400 0 0 0 0 0
B: ABS=2f3800000000003
B: MSC=20

I: Bus=0018 Vendor=2d1f Product=4877 Version=0100
N: Name="WCOMCOHO:00 2D1F:4877 UNKNOWN"
P: Phys=i2c-WCOMCOHO:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-WCOMCOHO:00/0018:2D1F:4877.0006/input/input36
U: Uniq=
H: Handlers=event6 
B: PROP=0
B: EV=9
B: ABS=10000000000

I: Bus=0018 Vendor=2d1f Product=4877 Version=0100
N: Name="WCOMCOHO:00 2D1F:4877 Stylus"
P: Phys=i2c-WCOMCOHO:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-WCOMCOHO:00/0018:2D1F:4877.0006/input/input37
U: Uniq=
H: Handlers=mouse3 event7 
B: PROP=2
B: EV=1b
B: KEY=1c03 0 0 0 0 0
B: ABS=1000003
B: MSC=11

I: Bus=0018 Vendor=2d1f Product=4877 Version=0100
N: Name="WCOMCOHO:00 2D1F:4877 UNKNOWN"
P: Phys=i2c-WCOMCOHO:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-WCOMCOHO:00/0018:2D1F:4877.0006/input/input38
U: Uniq=
H: Handlers=mouse4 event8 
B: PROP=2
B: EV=1b
B: KEY=400 1 0 0 0 0
B: ABS=1000003
B: MSC=11

I: Bus=0018 Vendor=2d1f Product=4877 Version=0100
N: Name="WCOMCOHO:00 2D1F:4877 Mouse"
P: Phys=i2c-WCOMCOHO:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-WCOMCOHO:00/0018:2D1F:4877.0006/input/input39
U: Uniq=
H: Handlers=mouse5 event9 js0 
B: PROP=0
B: EV=1b
B: KEY=30000 0 0 0 0
B: ABS=3
B: MSC=10

I: Bus=0003 Vendor=18d1 Product=502b Version=0100
N: Name="Google Inc. Hammer"
P: Phys=usb-0000:00:14.0-2/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:18D1:502B.0007/input/input40
U: Uniq=3c002b000a57414739313320
H: Handlers=sysrq kbd event2 
B: PROP=0
B: EV=100013
B: KEY=1000000000007 ff800000000007ff febeffdfffefffff fffffffffffffffe
B: MSC=10

I: Bus=0003 Vendor=18d1 Product=502b Version=0100
N: Name="Google Inc. Hammer"
P: Phys=usb-0000:00:14.0-2/input2
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:18D1:502B.0008/input/input41
U: Uniq=3c002b000a57414739313320
H: Handlers=mouse1 event4 
B: PROP=7
B: EV=1b
B: KEY=e520 10000 0 0 0 0
B: ABS=673800001000003
B: MSC=20

I: Bus=0003 Vendor=046d Product=4080 Version=0111
N: Name="Logitech M350"
P: Phys=usb-0000:00:14.0-1/input1:1
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1/0003:046D:C52F.000A/0003:046D:4080.000B/input/input42
U: Uniq=64-c1-67-36
H: Handlers=kbd mouse0 event3 
B: PROP=0
B: EV=1f
B: KEY=3f00733fff 0 0 483ffff17aff32d bfd4444600000000 ffff0001 130ff38b17d000 677bfad9415fed 19ed68000004400 10000002
B: REL=1943
B: ABS=100000000
B: MSC=10



user@chris-soraka:~$ # Kernel driver currently bound, and which .ko file it loaded from
modinfo hid_multitouch | grep filename
lsmod | grep hid_multitouch
filename:       /lib/modules/7.0.0-27-generic/kernel/drivers/hid/hid-multitouch.ko.zst
hid_multitouch         36864  0
hid                   278528  9 hid_google_hammer,i2c_hid,usbhid,hid_multitouch,hid_vivaldi_common,snd_soc_sdca,hid_generic,hid_logitech_dj,hid_logitech_hidpp



user@chris-soraka:~$ # udev's classification (touchpad vs touchscreen vs mouse)
udevadm info /dev/input/event4 | grep ID_INPUT
E: ID_INPUT=1
E: ID_INPUT_MOUSE=1
E: ID_INPUT_TOUCHSCREEN=1
E: ID_INPUT_WIDTH_MM=100
E: ID_INPUT_HEIGHT_MM=57



user@chris-soraka:~$ # libinput's view of the device's capabilities
sudo libinput list-devices | grep -A18 "Google Inc. Hammer" | grep -A18 "Capabilities.*pointer"
Capabilities:            pointer touch 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             disabled
Nat.scrolling:           disabled
Middle emulation:        n/a
Calibration:             identity matrix
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none

System info:

  • Lubuntu 26.04 LTS
  • 7.0.0-27-generic kernel

Top Answer/Comment:

Capabilities: pointer touch means it can be both a touchpad or currently a touchscreen. Wayland recommends leaving exactly one device type. Paste into /etc/udev/rules.d/99-askubuntu-1568431-1004020-my-touchpad-is-not-a-touchscreen.rules:

ACTION!="remove", KERNEL=="event[0-9]*", ENV{ID_VENDOR_ID}=="18d1", ENV{ID_MODEL_ID}=="502b", ENV{ID_INPUT_TOUCHSCREEN}="", ENV{ID_INPUT_TABLET}="", ENV{ID_INPUT_MOUSE}="1"

After this, reboot your computer.

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