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Thread Tools | Display Modes |
#1
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Multiple monitors using radeon x600 and windows wp
Hello everybody,
I was wondering whether someone could help me figuring out why I can't get the second monitor of my system working. The system is a modern pc, dell 3GHz, with a radeon x600 videocard, running windows XP sp2. Two monitors are connected to the videocard (one videocard), using one cable which splits into two connectors. The system recognizes that there are two monitors, but the second monitor remains blank. I have switched the connectors and both monitors are working. I have run the windows troubleshooter and addressed all points but to no avail. Display drivers are installed and the connection type is pci. Any help is much appreciated. Best regards, Marc |
#2
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Multiple monitors using radeon x600 and windows wp
"marc" wrote in message s.com... Hello everybody, I was wondering whether someone could help me figuring out why I can't get the second monitor of my system working. The system is a modern pc, dell 3GHz, with a radeon x600 videocard, running windows XP sp2. Two monitors are connected to the videocard (one videocard), using one cable which splits into two connectors. The system recognizes that there are two monitors, but the second monitor remains blank. I have switched the connectors and both monitors are working. I have run the windows troubleshooter and addressed all points but to no avail. Display drivers are installed and the connection type is pci. Any help is much appreciated. Best regards, Marc where are you looking to see there is 2 monitor connected ? device manager ? go in display properties, settings like this: http://koti.mbnet.fi/raiska/tutorials/tv/02a.png click advanced and go to displays http://koti.mbnet.fi/raiska/tutorials/tv/ati1.png ahh crap, i bet you have the new crappy CCC drivers well thats where you setup dual monitor in older CP drivers..... |
#3
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Multiple monitors using radeon x600 and windows wp
marc wrote:
Hello everybody, I was wondering whether someone could help me figuring out why I can't get the second monitor of my system working. The system is a modern pc, dell 3GHz, with a radeon x600 videocard, running windows XP sp2. Two monitors are connected to the videocard (one videocard), using one cable which splits into two connectors. The system recognizes that there are two monitors, but the second monitor remains blank. I have switched the connectors and both monitors are working. I have run the windows troubleshooter and addressed all points but to no avail. Display drivers are installed and the connection type is pci. Any help is much appreciated. Best regards, Marc That cable sounds suspicious. First, there is some background info he http://www.playtool.com/pages/dvicompat/dvi.html Here is a sample picture of an X600: http://www.ateck.com/catalog/r38-td3b.jpg The bottom connector is VGA (analog) and there is definitely only one monitor interface on that connector. The top connector looks to be DVI-I. DVI-I consists of two interfaces, a digital interface and an analog interface. If you connect a "VGA dongle" to a DVI-I connector, it is possible to extract just the analog portion of the interface, giving the standard 15 pin VGA. Functions on there, include the RGB signals that give you the display, plus the SCLK/SDATA that the computer and monitor use, so the computer can read the EDID from the monitor and understand what resolutions it supports. If you plug a DVI-D cable into the DVI-I connector, then you gain access to just the digital version of the output. On a DVI-I cable, normally you use the analog output or you use the DVI-D output, but you don't use both at the same time. At least, without deciding what to do about SCLK/SDATA. I don't think two monitors can share the same serial interface, but I could be wrong. (I cannot think of a reason they'd want to support multiple devices on the bus, but maybe they do.) So, I'd try connecting one monitor to each of the connectors shown in the atech.com catalog picture. Using separate cables. The video card has two logical blocks inside, for driving the two monitors, and the faceplate can have up to three connectors on it. Usually you are limited to using specific combinations (2 of 3) of the connectors. And on a DVI-I, you generally only want to try to use one set of the output signals at a time, as SCLK/SDATA may be shared, and I don't know what would happen if you tried to use both. If SCLK/SDATA only went to one monitor, and not the other, then you could be in the dangerous situation of sending a higher than acceptable resolution to one of the two monitors. (Like if one monitor, the one with SCLK/SDATA, was a 1280x1024 LCD, and mthe second monitor was an old 1024x768 analog CRT.) Alternate names for the SCLK and SDATA, are SCL and SDA, or in this picture, DDC Clock and DDC Data. The key in this picture calls the DDC Clock and DDC Data, part of "Plug and Play", as it allows the computer to figure out what the monitor characteristics are, and I think it only expects to find *one* monitor. http://upload.wikimedia.org/wikipedi...DVI_pinout.png OK, I found an example of your cable here. http://www2.dvigear.com/dvmatodvfevg.html I would use only one of those two interfaces at a time. Actually, I wouldn't use that adapter at all, because it leaves the signals an open stub, when one connector is not used. If you need to extract the VGA analog signals, I'd prefer to use one of the following, because it doesn't do anything with the digital signals at all. This is a DVI-I to VGA dongle, which typically comes packaged with certain brands of video cards. The cheaper the card, the less likely you are to find one of these included in the package. I won't buy a video card, unless this is listed as being in the box (because I hate having to buy one later). http://www.smarthomepro.com/97346.html By means of the VGA dongle, you can connect a VGA monitor to the DVI-I connector. Or if you use a DVI cable, you can connect a DVI monitor. I'm not really that crazy about that Y shaped cable, due to the sharing of SCLK/SDATA, and leaving the unused signals flopping around on the connector that is not being used. (Maybe the video card is clever enough to turn off the unused signals, but I don't know that for a fact. At least with the analog interface, it is possible for the video card to sense and detect that something is connected to the analog RGB signal. Since not all display devices have DDC on them, probing the serial bus and looking for EDID info, is not a sufficient test that a display device is connected.) Paul |
#4
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Multiple monitors using radeon x600 and windows wp
Hi all,
If you had this problem, what did solve it was that in the display properties there were two images of the monitors and one was grayed out. After right-clicking you could enable it. regards Marc |
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