Upgrade to 9.04 causes powernow and usb problems
I am trying to upgrade from 8.04LTS to 9.04. I have a fully functional 8.04 system with dual screens from two NVIDIA cards using propriety drivers, it is a MSI K8 SLI motherboard. When I upgrade either over the net via 8.1 or try a fresh install of 9.04 everything is ok with one screen / video card as soon as I activate the nvidia drivers the system fails to boot, with errors of K8-powernow ACPI object problem (I have tried acpi=off) or a USB error of a port not being enumerated or not responding. Reloading 8.04 I can achieve a fully functioning system it also works under win XP SP3, so the hardware is not at fault.
Does anybody know what changed between 8.04 and 8.1 to cause this problem (copied into 9.04) and is it fixable I am sure I can not be the only person with two video cards in the same machine.
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