the rd.qubes.hide_all_usb is probably not the cause.
new keyword search:
https://www.startpage.com/do/search?q=qubes+touchpad+not+detected
from abandonned topic:
https://forum.qubes-os.org/t/qubes-users-problems-with-trackpad-during-installation/481
ls /sys/module/psmouse/driver/*/may also give useful information -
e.g. from me:
[user@dom0 ~]$ cat /sys/module/psmouse/drivers/serio\:psmouse/description
PS/2 mouse driver
https://github.com/QubesOS/qubes-issues/issues/5486
what say : sudo libinput list-devices ? not detected ?
some other keyword:
https://www.startpage.com/do/search?q=hp+envy+linux+touchpad+not+detected
https://developers.hp.com/hp-client-management/forum/touchpad-does-not-work-after-installing-ubuntu-2004-hp-laptop
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash psmouse.proto=bare"
GRUB_CMDLINE_LINUX="i8042.reset i8042.nomux i8042.nopnp i8042.noloop"
everything is not need I guess, in your log you have something similar:
[ 2.154658] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
By the way, what was the kernel version used with your hwinfo in Ubuntu ?
I suppose your BIOS is up to date as well.