основывался на инструкции: https://wiki.gentoo.org/wiki/Synaptics
тачпад игнорирует любые воздействия.
# dmesg | grep i8042
Command line: BOOT_IMAGE=/vmlinuz-4.14.65-gentoo root=/dev/sda4 ro i8042.nopnp
Kernel command line: BOOT_IMAGE=/vmlinuz-4.14.65-gentoo root=/dev/sda4 ro i8042.nopnp
i8042: PNP detection disabled
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4