Iīve tried BIOS updates (My Board is from ASUS) too, but I still have the problem that ONLY ping works.
The other thing is ACPI(off in the Bios). I have to disable it in the kernel because Iīve got another PCI-Board whose driver donīt work together with ACPI (AVM DSL Card. They also have closed source driver)
But thatīs just my problem
Hope one day NVIDIA can learn from open source