How to get rid of spontaneous monitor frequency switching in Ubuntu 14.04?

Question

X.Org

in logs:
[ 1489.988] (II) intel(0): switch to mode [email protected] on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 1500.892] (II) intel(0): switch to mode [email protected] on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 1639.120] (II) intel(0): switch to mode [email protected] on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 1639.343] (II) intel(0): switch to mode [email protected] on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 2610.864] (II) intel (0): switch to mode [email protected] on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
How to get rid of this?
Freshly installed ubuntu.

Answer 1

go to DVI or HDMI or displayPort
to firebox analog connectors)

Answer 2

script with xrandr to autoload hang