Devices > Video Cards, Monitors, Televisions, and Projectors

Dealing with windows 7 dynamically handling video outputs?

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Bill Kearney:
I bought one but am having a bit of trouble getting things sorted with it.  It doesn't seem to be properly imitating the display.  I thought I followed the steps to program it.  But my display card and driver doesn't see the setup as being 'the same' as a direct connection to the display.  But I haven't yet had to time to dig into it completely, or call Gefen for help.  Hopefully I'll have some time today to wrestle with it.

Sandy B Ridge:
Oh no!

Have you discovered moninfo yet? It is a very helpful program which will read the EDID table that Windows is seeing and storing. Just make sure you're usin the 'active' one when looking otherwise it can be confusing. You can then directly compare what the active EDID is with and without the Gefen widget.

The usefulness of the widget is that it will send out a static EDID which won't change when you change the multiswitch. If it doesn't have exactly the right parameters for your kit, you can override this with your own parameters. A very useful thread is at avsforum called (helpfully) 'EDID Override thread'. (I'd provide a linky, but it's too fiddly to do from the iPhone!). So for example you can override what the Gefen is sending out once you've installed the custom .inf EDID file in the Device that the Gefen is mimicking. The EDID should then be totally static (and exactly with the Video modes and Audio modes that you want supported).

I didn't have the device long enough to elucidate whether there was any issue with HDCP handshaking. The Gefen device should be transparent to this and in theory it shouldn't matter in the way MC works anyway. It might affect PowerDVD or TMT or other HDCP aware programs.

SBR

Bill Kearney:
Yes, moninfo is your friend when it comes to dealing with monitor negotiation nonsense.

I've been an avsforum member for quite a while, there are few places better for dealing with AV-related questions. 

The hassle with EDIDs (and DDC before it) is bad enough, but Win7's dynamic display "feature" make sit infinitely worse.  You can't quite tell what's really going on.  Nor can you easily expunge incorrect settings.  And this is all made worse by video card drivers trying to "help".  I may actually dig out an older PC running XP or Vista (or set up a fresh one) just to debug the EDID and monitor .inf driver settings first.  Then, once that's nailed down, use that .inf file to set up win7.  Using Vista might be better in that there are known ways to disable/cripple the monitor detection process.  This while still being able to use a current generation of video card drivers.

'effing pain in the ass all around...

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