Sorry to keep posting. One more tidbit, if it helps: I didn't realize that running the lspci w/o sudo would lock out reporting on the capabilities of the VGA controller (where it says "<access denied>" in previous post). Here they are, from sudo:
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
