According to the debug output, the nvidia driver is not bound to the hardware on U5:
(--) PCI:*(0:18:0) nVidia Corporation unknown chipset (0x0533) rev 162, Mem @ 0xf5000000/24, 0xd0000000/28, 0xf4000000/24 (--) console driver: SUNWtext New driver is "nv" The device id is 10de,0533. This device id is not installed by the driver that should be bundled with U5. It was delivered starting with driver 169.xx. Please download 173.14.05 from the NVIDIA web page and install/reboot.
