Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have an Asus U31SD-XH51 laptop running latest Ubuntu 12.04 LTS and I want to know if there is a way to prevent the system from charging the battery unless its charged level dips below 95%?

This is a feature I notice from my Windows 7 partition. According to Asus, while the charge level is at least 95%, the system would not charge in order to prevent deterioration. However, this is not the case on Ubuntu 12.04 because the system would still charge my battery even at 99%.

Anyone shred some light for me?

share|improve this question

1 Answer 1

up vote 2 down vote accepted

For my model, U31SD-XH51, I simply added "acip_backlight=vendor" to grub and update it. It actually fixing all backlight problem for me. No longer I need to mess with /etc/rc.local or LMT(laptop-mode-tools). If anyone got a U-series, please follow the steps below and give it a shot.

  1. sudo gedit /etc/default/grub
  2. GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
  3. sudo update-grub

Best of all, the battery charging concern I am having is fixed as well. Now, it won't charge unless dips below 95%.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.