From: Allan Schaffer (allan++at++sgi.com)
Date: 05/29/2002 19:21:45
Ozarka Simatomi wrote:
> I am trying to display the same scene on two
> screens. I got the error message:
> PIPES OUT OF SYNC
> screen 0 is phase-shifted -74 degrees from master
> screen 1
> tasks may be out of sync, or pipes are not genlocked
>
> How can I synchronize these two pipes? Do I need
> special cable to synchronize the two monitors, or is
> there an OpenGL Performer function that I can call to
> synchronize the pipes?
You'll need a coax cable and a terminator. This message means the pipes
are not genlocked, which is very bad for a multi-pipe application. You
need to connect the sync output of pipe 0 to the genlock input of pipe
1, then run "setmon -g -p 1" to enable the 2nd pipe (pipe 1) to sync
from the genlock source. Or, you can use ircombine instead of setmon.
After it's all done, run "/usr/gfx/gfxinfo -v | grep Sync" and make sure
pipe 1 reports "Genlocked - True"
'man genlock' for the precise terminology; we're software guys. :-)
Also, if it doesn't work out, call SGI tech support and they can walk
you through the procedure.
[It looks like Svend's first message got trapped, it contained a big
postscript file with these details. If anyone is interested, reply back
to me (or svend) and we'll send you the original copy.]
Allan
-- Allan Schaffer allan++at++sgi.com Engr. Manager, Core Rendering 1-650-933-2160 Silicon Graphics http://www.sgi.com
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