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Recently installed Ubuntu 12.04 on my Samsung NP300e5za0pin laptop . Brightness function is not fully functioning, and it will not bring down below 70% when I press the FN++Brighness.

Brightness automatically becomes 100% and then again loss of battery.

Please give some suggestion to solve the problem !!

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1 Answer 1

I got another samsung laptop. Try to add/change this line in your /etc/default/grub file and run update-grub and restart afterwards. It fixed my problem with the brightness control.

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="

However, battery life is still terrible under Ubuntu .. only 2 hours instead of 4 hours. If anybody has a fix for that, it would be appreciated.

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If you have optimus graphics, installing bumblebee does wonders for your battery life! See here vxlabs.com/2012/05/01/… for my account. –  Charl Botha Oct 13 '12 at 10:41

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