My lab has recently changed the set up of the EEG and stimuli PCs, and we are now running on Ubuntu but with a Windows 7 partition. The code for my experiment runs fine on the Windows partition, at the full 144Hz that it should (printed refresh rate at the start and checked with the benchmark wizard). However if I run the same experiment from within Ubuntu I get 72Hz, both from the benchmark wizard and printing at the start. The experiment does also take twice as long.
I tried reducing the refresh rate in case it was too fast for the script (I am loading images each trial) to 85Hz, but again on Ubuntu I was then getting 42.5Hz, again half of what it should be. I saw someone else on here found that reducing the resolution helped, but this did not work for me. In fact, I think it made it even worse.
I am not very familiar with Ubuntu so I'm not really sure how to go from here. While I do have the option of running things from Windows, it's important that I get things running on Ubuntu.
Apologies if I am unable to provide more information for the next few days as I am travelling for work.