Yesterday I updated my qubes (dom0 and templates). Before shutting down touchpad was working. After rebooting laptop was behaving abnormally slow and keyboard was not working at luks decryption page (surprisingly CAPS Lock is working there but no other key).
After several reboots later I somehow gained access using Advanced qubes boot options and entering luks password at terminal but now touchpad is not working/detecting.
After one reboot touchpad miraculously worked but after another same issue is happening.
While checking system tools > settings manager > mouse and touchpad the touchpad name is missing from the drop down ( it showed something before the updates).
Updater was failing every time with error about cache something so I tried command line as follows:-
1. sudo qubesctl --show-output state.sls update.qubes-dom0
2. sudo qubesctl --show-output --skip-dom0 --templates state.sls update.qubes-vm
This updated 4 templates and I had to update remaining using the update option on Qube Manager. Now boot time has also increased from 2-3 s to 5-10+.
Currently I make do with mouse and hope for a quick resolution of this issue whatever it maybe.