Comment 34 for bug 1949394

I've applied this one, which I reckon is equivalent to yours:
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index ee2a04d..ddeb89c 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1427,7 +1427,8 @@ static int elantech_set_properties(struct elantech_data *etd)
        etd->crc_enabled = ((etd->fw_version & 0x4000) == 0x4000);

        /* Enable real hardware resolution on hw_version 3 ? */
- etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table);
+ //etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table);
+ etd->set_hw_resolution = 0;

        return 0;
 }

This is the touchpad h/w version:
psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x361f0e)

Reading between the words, perhaps the above patch would have no effect on hw_version 4? Perhaps we need an equivalent one for hw_version 4?