I am a new Ubuntu user, and have been playing around with it with since installing it. I noticed that I have been getting a lot of eye strain due to the low refresh rate (of 50 or 60). I found this post about changing the refresh rate, but unfortunately, I can't seem to turn it up.
I have a BenQ XL2420T 120 Hz monitor. I have the NVIDIA proprietary drivers installed. CompizConfig Settings Manager showed a value of 50 for the Refresh Rate property under the Composite plugin, but changing this to 120 didn't have any effect.
xrand displays the columns
60.0*+ 120.0 99.9 for my resolution, but when I try the
xrand -r 120 or
xrand -r 99.9 commands, it just says that the refresh rate is not available for the size.
I don't understand what's going on here. I assume that those three columns that
xrand output are the current refresh rate, the maximum refresh rate, and... something else. So clearly it sees that 120 is supported - why does it then say that it's not available?
How do I get this to work? It's been so long since I've worked with such a low refresh rate and it's killing my eyes.
Thanks in advance.