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  1. Bug #1884981
  2. Comment #21

Comment 21 for bug 1884981

Revision history for this message
In , louismichel (louismichel-linux-kernel-bugs) wrote :

I have the same touchpad issues with the same laptop IdeaPad 5 14ARE05

I added the kernel boot parameters:
"dynbg=file drivers/input/* +pt" i8042.debug=1 i8042.nopnp=1 log_buf_len=32M

Then I could get the following logs:
On kernel 5.7.6:
(no touchpad at all)
i2c_hid i2c-MSFT0004:00: HID over i2c has not been provided an Int IRQ
i2c_hid: probe of i2c-MSFT0004:00 failed with error -22

On kernel 5.8.2-rc2 mainline:
(touchpad acting limited)
i2c_hid i2c-MSFT0004:00: supply vdd not found, using dummy regulator
i2c_hid i2c-MSFT0004:00: supply vddl not found, using dummy regulator
i2c_hid i2c-MSFT0004:00: failed to retrieve report from device.
input: MSFT0004:00 06CB:CD98 Mouse as /devices/platform/AMDI0010:00/i2c-0/i2c-MSFT0004:00/0018:06CB:CD98.0001/input/input13
input: MSFT0004:00 06CB:CD98 Touchpad as /devices/platform/AMDI0010:00/i2c-0/i2c-MSFT0004:00/0018:06CB:CD98.0001/input/input14
hid-generic 0018:06CB:CD98.0001: input,hidraw0: I2C HID v1.00 Mouse [MSFT0004:00 06CB:CD98] on i2c-MSFT0004:00
i2c_hid i2c-MSFT0004:00: failed to retrieve report from device.
input: MSFT0004:00 06CB:CD98 Mouse as /devices/platform/AMDI0010:00/i2c-0/i2c-MSFT0004:00/0018:06CB:CD98.0001/input/input16
input: MSFT0004:00 06CB:CD98 Touchpad as /devices/platform/AMDI0010:00/i2c-0/i2c-MSFT0004:00/0018:06CB:CD98.0001/input/input17
hid-multitouch 0018:06CB:CD98.0001: input,hidraw0: I2C HID v1.00 Mouse [MSFT0004:00 06CB:CD98] on i2c-MSFT0004:00

Hope that can helps us all find a fix for that issue.