| Author | Message | ||
     samh Rating: N/A |
Since I posted my review of the I-glasses SVGA 3d here, I thought I would post this problem / follow up here too: So, I have had some more time to use my new I-Glasses and am now experiencing the following problem: The left and right images swap sides at random, producing a very disconserting affect. This happens in a simple OpenGL app that uses quadbuffers, as well as in Quake3 with native quadbuffer mode and also nvidia stereo driver mode. I saw an old post in the tech support forum regarding this and I quote: " By Neil Axe on Sunday, June 01, 2003 - 01:08 am: Sounds like a case of glasses that came with old buggy microcode. When I first got my glasses it had a problem where it would left/right frames every 15 seconds. Kinda made me go cross eyed when it happened. I got my glasses repaird by IO Display Systems. Supposedly it required an update to the microcode. Whatever the case, my glasses worked fine after I got them back. " I am having the same problem. DDC? I looked at the specs for my graphics card and it is using DDC on pins 15 and 12. Is this an I-Glasses problem, or do I need to remove the pins from an extension cable? Sam | ||
| Anonymous Rating: N/A |
I complained to IO about the same problem but they did not propose a microcode update. Basically, their statement was that the unit only supports stereoscopic 3d sources that provide a polarity signal on pin 12 of the VGA connector. Normally the DDC lines are only used by the graphics drivers during initialisation to discover plug-n-play monitor capabilities. Once that is done, the DDC lines are basically unused, so they can be reused for the polarity signal. nVidia stereo drivers supply this signal by default. Otherwise you're pretty much on your own. I wrote a kernel driver for Linux that does the same thing with my ATI radeon 9700 pro. It's also possible to construct a passthru box for the VGA cable that generates the DDC signal off the vsync signal. I've seen some instructions floating on the net. -M | ||
| Anonymous Rating: N/A |
Sam, I just noticed that you were in fact using nVidia drivers. If you have an extension cable, try removing it and connecting the unit directly to the VGA connector. The DDC signal is absolutely needed and the extension might be messing it up somehow. Otherwise, you may have to return the unit for servicing. -M | ||
| Anonymous Rating: N/A |
it is a microcode update and needs to be fixed by IO. | ||
| samh Rating: N/A |
Not using an extension, and still occurs with the nvidia drivers. Sam | ||
| samh Rating: N/A |
Ok, basically solved this problem. Have been in communication with Ross at I0, very helpfull in sorting through this. Turns out that the flickering was not caused by the goggles, but was a driver problem with my nvidia card. The problem has all but gone away using the linux driver, and is pretty decent using the 3x.xx nvidia stereo driver. Sam |
