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Edgar 2007-03-12 02:38
I have two identical 19" LCD monitors (DVI+VGA) that perform well in Dual D-sub (VGA) mode at 1280*1024. However, when I connect them both with DVI-I cables to the DVI-I ports of the V9180-VS the max resolution that still works stable is 800*600 per monitor. In 1024*768 the screen is up for 3 seconds and then turns black for 1 second. In 1280*1024 the screens are put to sleep mode or the resolution setting is rejected. This is all at 60Hz. Minimizing the color bit depth doesn't seem to matter. Power Management is disabled in System BIOS and Display Properties.
What is the supposed max resolution in Dual DVI-I mode of this VGA Card? If 64MB is not enough video memory, how much is recommended ? Thanks for any advice !
MB : Asus P4T-E, Pentium 4, 1,7 GHz, 768MB, AGP 4X, BIOS Revision 1003.
OS : Windows XP Home, SP2 Build 2600, DirectX 9.0.
VGA : Asus V9180-VS, 2xDVI-I + ViVo, GeForce4 MX 440 with AGP 8X, 64MB,
Bios Version 4.18.20.06.00, IRQ 16, AGP 4X,
nVidia Driver Version 81.89, Asus Enhanced Display Driver Version 1.33,
Screen refresh rate 60Hz, 96 DPI, Color profile : 190C7,
Hardware acceleration : Full, Enabled write combining.
Monitor : 2x Philips LCD 190C7-FS, 19", 1280*1024, 60Hz, DVI and VGA ports,
Philips Driver 190C7.icm, Version 1.0.0.0, Windows Hardware Compatibility.
PSU : AOpen ATX AO400-12AHNF, 400W
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Damion 2007-03-15 05:44
I have the same problem with 3 19" lcds, has long as I use the dvi sub I'm fine
Damion J Hester
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Damion 2007-03-15 05:45
also make sure your video card can display in dual dvi
when I changed my video card to a xfx 7600 gt I can now use 2 of the 19"s in dual dvi
Damion J Hester
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Edgar 2007-03-16 00:33
Thanks Damion for your reply.
That xfx 7600 gt is exactly the alternative that I had in mind. Was the installation as simple as plug and play ? How about the software that comes with this card, is it any good ?
Odd though that Asus sells a dual dvi card that doesn't seem to be able to support two dvi monitors.
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Edgar 2007-05-29 19:32
Solved the problem. I had the Philips 190C7 monitors connected with DVI-I Dual Link cables. When I substituted them with DVI-D Single Link cables all problems vanished. It is generally assumed that DVI-I Dual Link cables are universal but as this incident shows this is not always true. DVI-D Single Link supports resolutions up to 1280*1024 and prevents monitor ID confusion by the VGA card.
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