Huzzah, I think you all got it! I finally found the time to do a separate install of i386 Ubuntu on the end of my harddisk for testing the 32bit version of the mainline kernel.
When I boot the 32bit version with the default kernel (v3.5), the GPU still doesn't load, but with kernel v3.10-rc4, everything checks out fine. The output from `lspci -vvnn` looks right, "boot video device" appears in dmesg, and the first PCI bridge takes under 10 ms to initialize. Although Unity 3D still won't load, that's just because the nvidia module couldn't build against the mainline kernel.
I'll keep the test partition installed a little while longer. Just let me know what else I need to do to help with closing the bug out. Thanks again for all your help.
Huzzah, I think you all got it! I finally found the time to do a separate install of i386 Ubuntu on the end of my harddisk for testing the 32bit version of the mainline kernel.
When I boot the 32bit version with the default kernel (v3.5), the GPU still doesn't load, but with kernel v3.10-rc4, everything checks out fine. The output from `lspci -vvnn` looks right, "boot video device" appears in dmesg, and the first PCI bridge takes under 10 ms to initialize. Although Unity 3D still won't load, that's just because the nvidia module couldn't build against the mainline kernel.
I'll keep the test partition installed a little while longer. Just let me know what else I need to do to help with closing the bug out. Thanks again for all your help.