Comment 10 for bug 748320

Hi Bryce,
Thanks for getting back to me. I don't think I've been searching the forums with the right keyword ('hybrid'). Unfortunately, keeping the vaio in 'nvidia mode' with the switch, doesn't solve the problem. The good thing is that (until there is a substantial fix) there is a pretty good workaround. As I mentioned,
I can get the NVidia proprietary driver to work on Natty if I install the following custom hacked kernels and boot from this:
* linux-headers-2.6.28.10-vaioz_2.6.28.10-vaioz-10.00.Custom_amd64.deb
* linux-image-2.6.28.10-vaioz_2.6.28.10-vaioz-10.00.Custom_amd64.deb
You can read about this procedure and download the hacked kernels from:
* http://www.adhocism.net/2010/11/installing-ubuntu-10-10-on-sony-vaio-vpc-z13m9eb/
* http://www.voip-x.co.uk/files/adam/IMPORTANT_README
Adam from www.voip-x.co.uk/files/adam made this bandaid/hacked solution by creating this custom kernel 2.6.28-10-vaioz. The only purpose of this kernel is to turn on the green light (i.e. turn on the NVidia GPU) at first boot. After doing this, Grub appears again and you can select the ‘proper’ Ubuntu kernel (2.6.38-x-generic) and boot in to a GUI where the NVidia proprietary driver works perfectly. Before Natty, you also needed to install another custom kernel 2.6.37-x-vaioz from Adam and install the latest binary nvidia driver (downloaded from nvidia). With Natty, you don't need to do this last step. The native Ubuntu kernel and the nvidia proprietary driver that Ubuntu automatically downloads work now.
Thanks again.