Comment 312 for bug 312756

bdkoepke, thank you for your help. With your pointers, I ended up compiling my own kernel with a new DSDT.hex (unfortunately current kernels do not support loading DSDT.aml files from initramfs). On idle, with WiFi off and low screen brightness I can also get roughly 10500 mW, with an estimated 7 hours of battery life.

Of course, in an ideal world we'd find the appropriate progression of acpi calls so that a custom DSDT would not be necessary. Even better would be a true switchable graphics solution, although since Nvidia's binary driver won't support it, the bottleneck is still getting good 3D out of nouveau.