I have a hybrid Radeon 6600M/Intel laptop, and I've installed the Ubuntu beta 2, hoping that I'd get a better battery life but I still seem to be getting high power consumption.
With radeon
blacklisted, I'm still getting ~23W of power consumption. I get ~5 hours on Windows compared to <2 hours on Ubuntu. What can I do to decrease power consumption?
Best Answer
On a hybrid Intel/AMD system, blacklisting
radeon
won't actually turn off the discrete Radeon card; it'll be in a lowish-power state because it's not doing anything, but it won't be off.In order to actually turn off the card you need to have both
intel
andradeon
loaded so that the vgaswitcheroo infrastructure gets initialised, and then you can runwhich will turn off any GPUs that vgaswitcheroo thinks are unused; in this case, it'll be your Radeon. You'll need to do this each boot; it's not persistent across restarts.