So, since updating to Linux Kernel 5.4 and up, my Touchpad on my Lenovo Ideapad 720s15IKB is not longer responding. dmesg | grep touch dont show any longer the Device, like it is disappered from the System.
Due to the fact that i need the Touchpad working, i am now running it on the 5.3.7 Kernel for now, but i could need help to fix it. Using the Gnome Firmware Tool i could see it is detected as some “Synaptics”-Device, but also there arent any Firmware-Updates.
So, i hope someone with more knowledge of Kernel and driver than me can help me so i can get the Touchpad on the newer versions running.
The Kernel Parameters listed there dont solved it.
I have checked also the /proc/bus/input/devices file, which also dont list the Touchpad in the current Kernel, so i expect somthing in the drivers or like this, but like I said, I dont know how or where the problem lies.