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 use to work at night and it is eye-hurting to watch at lightbulb-bright screens (I've got two - laptop's built-in panel and an external 18-inch CRT) in a dark environment. So I adjust my screens to be darker.

Can I do this a software way instead of pressing monitors' buttons that many times every time?

share|improve this question

4 Answers 4

up vote 16 down vote accepted

I have been using this. Its very nice.

sudo add-apt-repository ppa:jonls/redshift-ppa
sudo apt-get update && sudo apt-get install redshift gtk-redshift

gtk-redshift is just the gui, not required.

f.lux is also an option.

share|improve this answer
No need for ppas any longer. Redshift is included in natty. Just do sudo aptitude install redshift or sudo aptitude install gtk-redshift (the latter for the gtk variant which comes with an icon for the tray). –  N.N. Jun 14 '11 at 11:56

The software you're looking for is Redshift redshift

share|improve this answer
Thank you, this thing is great. –  mrSuperEvening May 6 '12 at 22:50

You can always do Windows-M or Windows-N. The first inverts colors of all windows showing, the second does it to the current window in focus.

Really helps when reading PDFs with tired eyes

share|improve this answer

To those who have problem with brightness configuration after installing Ubuntu 10.10 and are using Acer Aspire 4741, here's a solution for you:

gksu gedit /etc/default/grub

Change the line GRUB_CMDLINE_LINUX="" into GRUB_CMDLINE_LINUX="acpi_osi=Linux"

sudo update-grub

Restart your linux

share|improve this answer

Your Answer


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.