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.

My eyes hurt so I thought I should check the screen refresh rate (monitor frequency), but I couldn't find it.

Where is it? (in Ubuntu 12)

share|improve this question

2 Answers 2

up vote 19 down vote accepted

Compiz looked like it worked. But it didn't work.

So the solution to this is the following.

First we check available modes.
$ xrandr
1440x900       59.9+*   75.0
1280x1024      75.0     60.0

Then we pick the mode, including resolution and refresh rate.
$ xrandr -s 1440x900 -r 75

Or just the refresh rate
$ xrandr -r 75

Let's see if it worked
$ xrandr
1440x900       59.9+    75.0*
1280x1024      75.0     60.0

Alright. Then all you have to do is add the command to Startup Applications and be done.

share|improve this answer
I wonder why didnt some one mention this ?????? Rate 75.0 Hz not available for this size" . Its not the correct solution at all. –  jQuery.PHP.Magento.com Feb 13 at 18:21

open your terminal and type this

sudo apt-get install compizconfig-settings-manager

then type compiz in your unity dash , it will list you compiz settings manager .Open compiz and at general options click at composite and there you have untick the detect refresh rate then you can manually set the value you want . enter image description here .

and two know allowed refresh rates for the resolution you can use xrandr

the second row are allowed refresh rates with respect to the resolutions . so by depending on resolutions you have set , you can change the refresh rate by using the above methods . enter image description here

share|improve this answer
How can I know which is the max allowed? Can't this break my monitor? –  HappyDeveloper Jun 7 '12 at 3:08
Perfect, thanks! –  HappyDeveloper Jun 9 '12 at 17:12
Do you really think its that simple ??? It adjusts to 60Hz on reboot no matter what value you set !!! –  jQuery.PHP.Magento.com Feb 13 at 18:20

protected by Community Dec 12 '12 at 2:41

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

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