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 Ubuntu 12.04 LTS 32bit in my Dell Latitude E5530 with Intel core i5 and graphics of Intel® Ivybridge Mobile x86/MMX/SSE2.

I can change Brightness with Fn buttons but screen brightness reset to maximum after every reboot. There is no Brightness control in Brightness & Lock menu.

enter image description here

enter image description here

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Why isn't there the Brightness slider in menu?

share|improve this question

Your Answer


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

Browse other questions tagged or ask your own question.