Hi Jonathan,
For starters, did you see this in dmesg? :
[ 0.422648] i8042: PNP: PS/2 Controller [PNP0303:KBC0] at 0x60,0x64 irq 1
[ 0.422652] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
And did you try booting with "i8042.nopnp" ?
Also what is the output of:
ls -l /sys/bus/i2c/devices
and of:
ls -l /sys/bus/acpi/devices/ELAN066C:00/
and of:
cat /sys/bus/acpi/devices/ELAN066C:00/status
?
Regards,
Hans
On 10/14/23 19:12, jdieter@xxxxxxxxx wrote:
> Hi Dmitry, Hans, input mailing list,
>
> I have two Lenovo 300e laptops, one running Windows and the other
> Fedora. The laptop has a touchscreen, a stylus and a touchpad. The
> touch screen and stylus work perfectly, but, under Fedora, the touchpad
> doesn't work at all and isn't detected by the kernel.
>
> The device shows up in /sys/bus/acpi/devices/ELAN066C:00/ with a
> modalias of acpi:ELAN066C:PNP0C50:.
>
> I'm not sure if the touchpad should be using elan_i2c or i2c_hid_acpi.
> In a somewhat naive attempt to get something to happen, I added:
> ```
> { "ELAN066C", 0 }, /* Lenovo 100e/300e 2nd gen AMD */
> ```
> to include/linux/input/elan-i2c-ids.h, but the kernel still doesn't
> auto-load the module.
>
> I can get elan_i2c to recognize something if I run:
> # echo elan_i2c 0x15 > /sys/bus/i2c/devices/i2c-1/new_device
> but the IRQ defaults to 0, and I get an error about an IRQ conflict:
>
> ```
> [ 2317.791897] i2c i2c-1: delete_device: Deleting device elan_i2c at
> 0x15
> [ 2319.317468] i2c i2c-1: new_device: Instantiated device elan_i2c at
> 0x15
> [ 2319.317662] elan_i2c 1-0015: supply vcc not found, using dummy
> regulator
> [ 2319.433176] elan_i2c 1-0015: Elan Touchpad: Module ID: 0x00be,
> Firmware: 0x0003, Sample: 0x0003, IAP: 0x000e
> [ 2319.433184] elan_i2c 1-0015: Elan Touchpad Extra Information:
> Max ABS X,Y: 3206,1828
> Width X,Y: 152,152
> Resolution X,Y: 31,31 (dots/mm)
> ic type: 0xa
> info pattern: 0x0
> [ 2319.433339] genirq: Flags mismatch irq 0. 00002008 (elan_i2c) vs.
> 00015a00 (timer)
> ```
>
> By manually setting the IRQ to an unused value in the driver, I can at
> least get the driver to create a new mouse device in /dev/input, but
> the touchpad still doesn't work.
>
> At this point, I don't know if I'm really close or barking up the
> completely wrong tree.
>
> A bug report from earlier this year about an identical system is at:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1976556
>
> Attached is the dsl of the device in ACPI.
>
> I would really appreciate any help in figuring out how to get this
> working. Please let me know if there's anything else you need from me.
>
> Thanks,
>
> Jonathan
