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ubuntu 12.04: Why my laptop is consuming more power than 11.10?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 1037 / 3 Years ago, tue, october 26, 2021, 11:22:47

I had 11.10 X86 on my Asus laptop (sandybridge, Nvidia 520M). I had 8 hours' battery life with Bumblebee and Jupiter. Average battery discharge rate was around 10w.
Later I changed, not upgraded, to 12.04.1 AMD64. I installed Jupiter. But there is no "restricted drivers" available so I guess Bumblebee will not work. So I removed nvidia drivers. Now I only get 4 hours' battery life. Average battery discharge rate is around 19w. The removal of nvidia driver did not make any difference.

What's the cause? Nvidia video card not disabled or 64b version of Ubuntu?

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1 Year ago

answered 3 Years ago tonhorn · Accepted Answer

Bumblebee does work in 12.04, I have it running on 12.10 64bit on a Lenovo z370 laptop (i5-2410M CPU sandybridge). So I guess you should install it on your laptop, too (just follow instructions on bumblebee-project.org).

Additionally, in my experience, settings in the grub config file has a large impact on battery life, too.

I have

GRUB_CMDLINE_LINUX_DEFAULT="pcie_aspm=force acpi=noirq i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1"

in /etc/default/grub.

Don't forget sudo grub-update after editing.