I'm having problems with the KVM3122 and a desktop with a nvidia 8300 video card. For some reason when the monitor (a 17 inch viewsonic) is running through the KVM the color is way off. It appears as though one of the color channels is not coming through and the image is washed out in blue and red. When I connect the computer directly through to the monitor this problem goes away. Any ideas?
Check the KVM switch and make sure that the cords are not frayed or the device did not overheat. Also make sure that the cords are all securely fastened into the approptiate plugs. (Sometimes - however inconvenient - it is useful to tape the plugs in securely as well as ***** in the monitor plugs with the small knobs on either side of the plug. If the cord is defective you may need to buy a new one. Some of the pins from the cord may be missing and they may be the ones responsible for the missing color (green). I also suggest, checking the monitor and KVM color settings (if presant) before doing anything else. Sometimes devices auto calibrate and mess themselves up instead of doing any good. I may have more solutions later, if these don't work. There may just be a problem with the kvm switch because according to what you wrote, it seems that nothing like this happened to yor monitor before, did it?
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Is your switch a SCxPDV or a SC4UAD? Regardless, if it's a DVI switch, you can try place a DVI-D cable in between your HP PC and the switch. Do the same between the switch and the HP monitor. I'm guessing you are currently using a DVI-I cable between the PC and the switch. Some video card/OS combo send out analog signal when you use a DVI-I cable on the PC, which would not be displayed if you are using the digital port on the monitor. To read up on the difference between DVI-I and DVI-D cables, check out http://en.wikipedia.org/wiki/Digital_Visual_Interface
For future Avocent product related questions, I suggest you post them at Avocent's user forum http://community.avocent.com as it's monitored by their tech support team.
The GCS632U does not have any form of display emulation which may cause video problems if the boot up is not done right. What IOGear recommends is when booting up a computer the KVM should stay on that computer until it comes to a desktop. What this does is it allow the KVM to pass the EDID information from the monitor to computer and that should help.
When a computer first boots up the video card send a request to the monitor to find on what resolutions the monitor supports. If the video does not get a response the card will default to very low resolutions. The only way to avoid this problem is to boot your computers one at time and keep the KVM on the computer until it fully boots to a desktop. This will allow the KVM to pass the monitor information to the computer.
The splitter you bought allows you to split one video signal into two. For example, a teacher using a computer to teach a class. She has one computer, one monitor she can see and then the splitter allows the students to see what she sees. To display independent screens you'll need to add another card to your system. Microsoft Help and Support lays out how to do this with Win 2000. No splitter involved.
Yes, this product will do the job. An easier solution, although probably more expensive, would be to use a video card with dual outputs. Using a video card with dual outputs would allow you to see the computer's video on both screens simultaneously.
This is a fairly common occurrence, typically due to signal loss. The longer the total cable run (monitor to computer connector) the less loss you will have. The longest KVM to computer cable I can use reliably these days is about 12-15? at 1024 x 768 at 32 bit color or 8? for 1280 x 1024 at 32 bit color. Things you can do to reduce loss:
-Reduce the length of the total cable run.
-Increase the quality of the cables used. I only use low loss cables now and have far fewer issues.
-Change the video card, some cards can push a signal a longer distance that others.
-Reduce the resolution/colors the video card displays.
-Try a different monitor or if possible use a different (low loss) cable to connect the monitor to the KVM.
Let us know how it turns out or if you have any other questions.
KVM's work best when you are using the same or similar type of hardware however there might be an issue with your video card interfacing with the KVM. I would switch the Video cables and see if the problem moved or disappeared. If the problem moves, then I would suspect the video card is the culprit. Since many problems can be traced to software compatibility issues, I would check to see if there is an updated driver for your video card and or your monitor first. If the problem disappears it could possible be a loose cable connection on the destop PC or the KVM itself. I would also try a different set of cables.