Flickering - need an alternative...
Hi everyone,

The flickering is killing me. I found out where my issue is, I just don't know how to fix it.

I have a brand spankin' new GTX470. I used to have a GTX250. This is connected via HDMI to an Acer H5360.

My glasses were plugged in via a USB active extender (via RJ45) where I also have a keyboard and a mouse. The USB Extender is compatible with Hi-Speed but does not provide full bandwidth.

With my GTX250 I had no flickering at all on this same extender. (older driver though).

Now that I switched to my new GTX470, the glasses are flickering like crazy - I mean it is not watchable. Sometimes I can get the Nvida test to run without flickering but it's rare. Was not happening with the 250,

If I plugged the emitter directly on the computer (with a passive extension 15' - which is the maximum USB extension you can get...)- it seems to be much better.

My problem is that my HTPC is about 20 feet behind the home theater room. I needed to run over 50 feet of RJ45 to extend the connection with the USB extender. I have no other way to connect the emitter.

I have a powered USB hub (I tried two of them) and I get the same results. I tried removing the mouse and keyboard and leave only the emitter - still same issue.

When it flickers, not only the glasses go out to lunch by flickering all over the place, but the display itself seems to flicker too (without the glasses) just by lookin at the screen.

When I plugged it closer it seemed to be better. What other alternatives would I have to extend dramatically the distance between the HTPC and the emitter.

I found this on the net

[url="http://www.usbfirewire.com/Parts/rr-47-2014.html"]http://www.usbfirewire.com/Parts/rr-47-2014.html[/url]

but it is over $350 and I am not sure if it would work. So I don't want to waste money if I don't have too.

Someone talked about timing with the USB bus, would that be a possibility? If so, how is it done? What is the actual bandwidth that this emitter uses?

And no - the option of moving the HTPC closer to the Home Theater is not an option. There are no A/V equipement in the HT other than speakers and projector - and now the 3D emitter. All the amps, decoders, players and PC are in a different room, quite a way from the HT.

Any ideas? Suggestions? Crazy things to try (beside demolition and rebuild).

What's killing me is that the 250 was working but not the 470 - does the card change the USB timing differently?

Thanks!
Hi everyone,



The flickering is killing me. I found out where my issue is, I just don't know how to fix it.



I have a brand spankin' new GTX470. I used to have a GTX250. This is connected via HDMI to an Acer H5360.



My glasses were plugged in via a USB active extender (via RJ45) where I also have a keyboard and a mouse. The USB Extender is compatible with Hi-Speed but does not provide full bandwidth.



With my GTX250 I had no flickering at all on this same extender. (older driver though).



Now that I switched to my new GTX470, the glasses are flickering like crazy - I mean it is not watchable. Sometimes I can get the Nvida test to run without flickering but it's rare. Was not happening with the 250,



If I plugged the emitter directly on the computer (with a passive extension 15' - which is the maximum USB extension you can get...)- it seems to be much better.



My problem is that my HTPC is about 20 feet behind the home theater room. I needed to run over 50 feet of RJ45 to extend the connection with the USB extender. I have no other way to connect the emitter.



I have a powered USB hub (I tried two of them) and I get the same results. I tried removing the mouse and keyboard and leave only the emitter - still same issue.



When it flickers, not only the glasses go out to lunch by flickering all over the place, but the display itself seems to flicker too (without the glasses) just by lookin at the screen.



When I plugged it closer it seemed to be better. What other alternatives would I have to extend dramatically the distance between the HTPC and the emitter.



I found this on the net



http://www.usbfirewire.com/Parts/rr-47-2014.html



but it is over $350 and I am not sure if it would work. So I don't want to waste money if I don't have too.



Someone talked about timing with the USB bus, would that be a possibility? If so, how is it done? What is the actual bandwidth that this emitter uses?



And no - the option of moving the HTPC closer to the Home Theater is not an option. There are no A/V equipement in the HT other than speakers and projector - and now the 3D emitter. All the amps, decoders, players and PC are in a different room, quite a way from the HT.



Any ideas? Suggestions? Crazy things to try (beside demolition and rebuild).



What's killing me is that the 250 was working but not the 470 - does the card change the USB timing differently?



Thanks!

#1
Posted 04/27/2010 03:19 AM   
HDMI ??
Didnt think you could use hdmi, thought it had to be dvi
HDMI ??

Didnt think you could use hdmi, thought it had to be dvi

#2
Posted 04/27/2010 10:30 AM   
I was in currys yesterday testing the samsung 3d tv and with all the light in teh store the flickering was quite bad.

I use hdmi to hdmi on my 3d projector as the card has hdmi on it and seemed to work ok.
I was in currys yesterday testing the samsung 3d tv and with all the light in teh store the flickering was quite bad.



I use hdmi to hdmi on my 3d projector as the card has hdmi on it and seemed to work ok.

#3
Posted 04/27/2010 11:11 AM   
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