resume after suspend don't works, 12.1 on packard bell easynote

I just installed 12.1 on packard bell easynote with geforce go 1600 and AMD turion 64,
everything went fine, only usual blank screen at reboot,
I tried suspend, closing the lid and clicking on the suspend button, it seems to works fine but don’t resume, opening lid, pressing start button, any other stroke, no resume.
any hint? suggestion? solution? freshbeer? coffee? cappuccino?/
ciao Pier