Linux eats eats my laptop's battery for breakfast.
Laptop: Asus N53SV with 2x 8GB DDR3 and 2 memory slots free. With the standard 750GB 7200RPM hard drive and DVDRW.
Distro: Mint 15 x64 with Mate 1.6
Kernel: 3.8.0-19 kernel
On a fresh boot powertop reports 44W used. It settles down after a few seconds to 23W.
I used this kernel module
to turn off my GPU with the command: \_SB.PCI0.PEG0.GFX0.DOFF
Powertop reports power consumption drops to 11.3W.
All seems well. But when I try shut down the system crashes (Mate GUI freezes and the hard drive light stops blinking)
I tried repeating the test, turning the GPU back on using the command \_SB.PCI0.PEG0.GFX0.DOFF
, but power consumption only rises to 18W meaning the GPU is not restored to its original (power hungry) state. Shutting down STILL crashes.
I verified that if I boot up, run powertop, wait for system to settle and then shut down, there are no problems.
The next idea I had is to shut down in a terminal or see if there is some error message, whats the best way to do that?
Beyond that I'm out of ideas. What do you suggest?