Re: Socket F, mcp55, mcp65 and drivers.
I'm not clear on what you mean by "modern kernels post edgy".
You stated that "mcp55 doesn't have any opensource driver" which is untrue. sata_nv supports MCP55.
You stated "Some selected chipsets for AM2 have mcp65" which is also untrue. There are some MCP55 motherboards that have AM2 CPU sockets.
You've not provided any information on what kind of problems you're experiencing, however since sata_nv is an open source driver, you should report the issues to whomever provides your kernel(s).