NVIDIA Quadro G-Sync II User Guide
1.Query the enabled displays on the Quadros.
nvidia-settings -q myserver:0[gpu:0]/EnabledDisplays
nvidia-settings -q myserver:0[gpu:1]/EnabledDisplays
nvidia-settings -q myslave1:0[gpu:0]/EnabledDisplays
nvidia-settings -q myslave1:0[gpu:1]/EnabledDisplays
3.Check the refresh rate is the same for all displays.
nvidia-settings -q myserver:0[gpu:0]/RefreshRate
nvidia-settings -q myserver:0[gpu:1]/RefreshRate
nvidia-settings -q myslave1:0[gpu:0]/RefreshRate
nvidia-settings -q myslave1:0[gpu:1]/RefreshRate
4.Make sure the display device we want as master is masterable
nvidia-settings -q myserver:0[gpu:0]/ FrameLockMasterable
5.Set the master display device (CRT-0).
nvidia-settings -a myserver:0[gpu:0]/FrameLockMaster= 0x00000001
6.Disable the house sync signal on the master device.
nvidia-settings -a myserver:0[framelock:0]/ FrameLockUseHouseSync=0
7.Set the slave display devices.
nvidia-settings -a myserver:0[gpu:1]/FrameLockSlaves= 0x00000001
nvidia-settings -a myslave1:0[gpu:0]/FrameLockSlaves= 0x00000001
nvidia-settings -a myslave1:0[gpu:1]/FrameLockSlaves= 0x00000001
8.Enable frame lock on server.
nvidia-settings -a myserver:0[gpu:0]/ FrameLockEnable=1