# If refresh rate is not get or it is smaller than 30 (incorrect values such as 1, 2.14 are get on some systems such as RB-Pi devices), get it by using xrandr (if there is only one monitor connected).
# If refresh rate is not get or it is smaller than 30 (incorrect values such as 1, 2.14 are get on some systems such as RB-Pi devices), get it by using xrandr (if there is only one monitor connected).