A note on vsync and nvidia cards with twinview

[kambo]

Just thought I'd pass a note along.

I only have a single pc in my condo, so it multitasks as sage and our everyday pc. And it's running quite well with ubuntu 8.04. Every once in a blue moon sage gives a spinning circle of death when browsing something in the ui and I have to restart the server but it's rare at least, and the wife likes it.

Anyway. I have twinview enabled and a lcd monitor on DFP-0 and a samsung hdtv on DFP-1. I have to use opengl=true with the miniclient and this option makes it vsync to the samsung:

export __GL_SYNC_DISPLAY_DEVICE=DFP-1
exec sage/client/sageclient.sh -fullscreen localhost

the nvidia-settings utility doesn't expose that option (for opengl), I had to search a bit to find that variable so I hope it helps someone else have smooth tear free pictures

My System:
Core 2 Duo, Nvidia 7600, HVR-500, HVR-1800 for QAM, Samsung LN40A450, Ati Remote Wonder RF Remote (best hardware ATI ever made