[SOLVED] Touchpad recognized as generic PS/2 mouse

rocketfuel · 12-27-2020, 04:03 PM

Hi all,

I'm setting up a brand new Dell Inspiron 7603 2-in-1 with Ubuntu LTS 20.04, and am having a heck of a time getting the touchpad set up properly. The system does not recognize the touchpad as a touchpad, but as a generic PS/2 mouse.

linux kernel version: 5.4.0-58-generic

The output of xinput is:

Code:

⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ CUST0000:00 27C6:0111                   	id=10	[slave  pointer  (2)]
⎜   ↳ CUST0000:00 27C6:0111 Stylus            	id=11	[slave  pointer  (2)]
⎜   ↳ PS/2 Generic Mouse                      	id=14	[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)]
    ↳ Sleep Button                            	id=7	[slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate         	id=8	[slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate         	id=9	[slave  keyboard (3)]
    ↳ Dell WMI hotkeys                        	id=12	[slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard            	id=13	[slave  keyboard (3)]

xinput list 14 gives:

Code:

PS/2 Generic Mouse                      	id=14	[slave  pointer  (2)]
	Reporting 7 classes:
		Class originated from: 14. Type: XIButtonClass
		Buttons supported: 7
		Button labels: "Button Left" "Button Middle" "Button Right" "Button Wheel Up" "Button Wheel Down" "Button Horiz Wheel Left" "Button Horiz Wheel Right"
		Button state:
		Class originated from: 14. Type: XIValuatorClass
		Detail for Valuator 0:
		  Label: Rel X
		  Range: -1.000000 - -1.000000
		  Resolution: 0 units/m
		  Mode: relative
		Class originated from: 14. Type: XIValuatorClass
		Detail for Valuator 1:
		  Label: Rel Y
		  Range: -1.000000 - -1.000000
		  Resolution: 0 units/m
		  Mode: relative
		Class originated from: 14. Type: XIValuatorClass
		Detail for Valuator 2:
		  Label: Rel Horiz Scroll
		  Range: -1.000000 - -1.000000
		  Resolution: 0 units/m
		  Mode: relative
		Class originated from: 14. Type: XIValuatorClass
		Detail for Valuator 3:
		  Label: Rel Vert Scroll
		  Range: -1.000000 - -1.000000
		  Resolution: 0 units/m
		  Mode: relative
		Class originated from: 14. Type: XIScrollClass
		Scroll info for Valuator 2
		  type: 2 (horizontal)
		  increment: 15.000000
		  flags: 0x0
		Class originated from: 14. Type: XIScrollClass
		Scroll info for Valuator 3
		  type: 1 (vertical)
		  increment: 15.000000
		  flags: 0x0

cat /var/log/Xorg.0.log | grep "input driver" yields:

Code:

[    16.827] (II) Using input driver 'libinput' for 'Power Button'
[    16.831] (II) No input driver specified, ignoring this device.
[    16.831] (II) Using input driver 'libinput' for 'Sleep Button'
[    16.834] (II) Using input driver 'libinput' for 'Integrated_Webcam_HD: Integrate'
[    16.836] (II) Using input driver 'libinput' for 'Integrated_Webcam_HD: Integrate'
[    16.839] (II) Using input driver 'libinput' for 'CUST0000:00 27C6:0111'
[    16.841] (II) No input driver specified, ignoring this device.
[    16.842] (II) Using input driver 'libinput' for 'CUST0000:00 27C6:0111 Stylus'
[    16.844] (II) No input driver specified, ignoring this device.
[    16.845] (II) Using input driver 'libinput' for 'Dell WMI hotkeys'
[    16.847] (II) Using input driver 'libinput' for 'AT Translated Set 2 keyboard'
[    16.850] (II) Using input driver 'libinput' for 'PS/2 Generic Mouse'
[    16.853] (II) No input driver specified, ignoring this device.

libinput version is 1.15.5

libinput list-devices gives:

Code:

Device:           PS/2 Generic Mouse
Kernel:           /dev/input/event7
Group:            8
Seat:             seat0, default
Capabilities:     pointer 
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: disabled
Calibration:      n/a
Scroll methods:   *button
Click methods:    none
Disable-w-typing: n/a
Accel profiles:   flat *adaptive
Rotation:         n/a

cat /proc/bus/input/devices:

Code:

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/input5
U: Uniq=
H: Handlers=mouse2 event7 
B: PROP=1
B: EV=7
B: KEY=70000 0 0 0 0
B: REL=3

Two-finger scrolling does not work, and the pointer jumps all over the screen if I even brush up against the touchpad (I've had a tough time even typing/copying/pasting all of this).

Any help would be greatly appreciated. Thank you in advance!

rocketfuel · 12-27-2020, 08:13 PM

Ok, I got everything working simply by updating to the latest kernel (5.10.3 as of this writing... released yesterday!) Everything is working, including a ton of things that I had not yet sorted out like keyboard backlighting, display brightness and resolutions (only one had been shown before), sound, and most importantly, the trackpad.

For anyone who needs the info, I did the following:

Downloaded the ubuntu-mainline-kernel.sh BASH script:

Code:

 wget https://raw.githubusercontent.com/pimlie/ubuntu-mainline-kernel.sh/master/ubuntu-mainline-kernel.sh

Installed the script into the executable path (I suppose I could have used chmod to make it executable instead):

Code:

 sudo install ubuntu-mainline-kernel.sh /usr/local/bin/

Then ran the command:

Code:

 sudo ubuntu-mainline-kernel.sh -i

Once the process was complete, I restarted, and all is well.