I have Dell vostro 1510 with Arch installation. the touchpad is not detected in xinput or lspci or libinput list-devices results. used to work before on 5.9.2 kernel. have the same problem with Debian since 5.10 kernel. I downgraded to kernel 5.9.2 for now and it's working there.
Created attachment 296415 [details] output of "less /proc/bus/input/devices"
Created attachment 296417 [details] output of "sudo libinput list-devices"
Created attachment 296419 [details] output of xinput
I tried doing these below to see if it gets fixed but the problem was still there 1-using synaptics and evdev instead of libinput 2-using "modprobe -r psmouse" and "modprobe psmouse" 3-restarting xorg 4-reinstalling libinput 5-downgrading libinput the only thing that fixes the problem is downgrading the kernel
I also tried reloading i2c_hid module. it still doesn't fix the problem. Also tried to see if any modules are getting blocked during the boot process. but there were no problems there.
+1 with Dell Latitude 7420 Kernel 5.11 does not recognize Dell Touchpad Kernel 4.18 works
Also fails with 5.12.2-1.el8.elrepo.x86_64
3 months have passed and still no fix and no answer
Make sure your module CONFIG_I2C_HID_ACPI (Device Drivers > HID > I2C HID Support > HID over I2C transport layer ACPI driver) is enabled. This was my problem in bug 214249.
(In reply to Julien Wajsberg from comment #9) > Make sure your module CONFIG_I2C_HID_ACPI (Device Drivers > HID > I2C HID > Support > HID over I2C transport layer ACPI driver) is enabled. > > This was my problem in bug 214249. It is enabled. And my touchpad is not detected at all. Can't even move the pointer. I think I'm just stuck with 5.9.2 kernel for eternity as long as I use this laptop.
the bug is fixed in kernel 5.14 changing the status to Resolved
(In reply to sephiroth.cyber from comment #11) > the bug is fixed in kernel 5.14 > changing the status to Resolved The bug came back after 2 restarts. Donno what the problem is
It seems this problem somehow has to deal with the laptop's charger. Since it's not the original one and has less Watts than the one shipped with the laptop. Everytime I connect the charger before I go into boot loader the touchpad doesn't get recognized. I tried a couple of times and if I wait for the boot screen to pass before connecting the charger, the problem won't happen. Don't know why though.