DVI problem

[Malko]

Hello

So I have ATI HD4550 and Samsung 205BW runing on W7 and CCC 9,8

So I had RGB for monitor and DVI for TV

Now I wanted to use HDMI for TV and DVI for monitor

The HDMI works fine, but I cant get the DVI to work under windows

when I start the computer the boot and the loading screen for windows work fine, but when it gets to start windows I get a black screen.

I can only get to work RGB and HDMI, but not DVI and HDMI

Any ideas on what to do or what could be wrong?

 

[505090]

using the tv as your primary monitor go into display settings and turn on the other monitor, then set it as the default primary

 

[Malko]

This didnt work, I still get a black screen. Also I noticed I get a blinking message that I should use 1680x1050 for this monitor, and yes I do use this but dosnt work.
Also I noticed that if I lower the resolution to 1280x1024 it works but the picture is corupted, twisted. so DVI works, digitial input works, and I dont know whhat is wrong

Any other ideas?

 

[505090]

are you using a vga -> dvi adapter, not all monitors support that feature. You would have to check with the manufacturer about it.

 

[Malko]

If I use DVI-VGA adapter it works since the monitro then works on VGA cabel,

As I said it dosnt work if I use direct DVI to my monitor on 1680x1050, I get a mesage to ''set the resolution to optimum 1680x1050'' strange I know but dont know what is wrong

Any other Ideas?

 

[505090]

so it's a straight dvi connection no adapters. Just to be though did you set the res to 1680x1050.

how is the tv hooked up dvi ->hdmi adapter

If you have two dvi ports on your card have you tried swapping ports

 

[jedimasterben]

Are you running Windows 7? If so, I'm fairly certain it's an OS limitation. One of my friends just ran into the same type of problem, and after several hours of googling and foruming, that's the reason I've come up with.

EDIT:

It's an OS limitation with ATI GPUs. Nvidia GPUs supposedly work fine, but I don't have the ability to try it myself.

 

[decen]

Ive had both the Win 7 RC and now RTM running off DVI on my last two moniters. the only thing that doesnt work is sound through DVI but i dont think that exists if i remember from my days of doing dish network installs. To me its wierd that my drivers show support for it though.

Although I am running a XFX 4850 on an LG TV monitor, here it is on newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16824005120

 

[Malko]

Well I dont think its the W7 since I have double OS with Win XP Pro, and it also dosnt work there. I am fairly certain that it could be the monitor not sure how and why, will take it to a friend to test it out

Also I have 3 outputs on my card
VGA
DVI-D
HDMI

 

[505090]

Also I have 3 outputs on my card
VGA
DVI-D
HDMI

That could be the problem, you said vga works. Some monitors only take vga and and DVI-A which is the same signal just over a different cable. DVI-d is an entirely different signal.

I have talked to several people who have dual monitors in win7. The only thing is that unlike xp you can not run more than one separate video drivers.

 

[Malko]

This monitor takes DVI-D
I have used it with DVI some time ago, then switched to VGA because I used DVI for LCD Tv

now I have a new PC and i want to use DVI for monitor and HDMI for TV

 

[jedimasterben]

That could be the problem, you said vga works. Some monitors only take vga and and DVI-A which is the same signal just over a different cable. DVI-d is an entirely different signal.

I have talked to several people who have dual monitors in win7. The only thing is that unlike xp you can not run more than one separate video drivers.

My friend also had dual monitors, however they were both DVI, not mixing HDMI or VGA into it. It worked right up until the new video card got dropped in.

Also, I'm currently running an ATI 4870, with an Nvidia 8800GT for running PhysX, so yes, you can run multiple display drivers. http://en.wikipedia.org/wiki/Windows_Display_Driver_Model#Future_versions

 

[Malko]

So here is an update

I tryed on a diferent computer and the monitor works fine

So why isnt working here, when I send 1680x1050@60 to monitor I get a blinking message on it that I should use the native resolution 1680x1050@60Hz strange

But it works on lower resolution, why?

Any ideas any one?

 

[decen]

did you try ressetting the drivers?
or maybe its the refresh rate, i have had issues with both but i dont remember what exactly caused it and what my old monitor did.

 

[505090]

most lcds refresh at 60

 

[decen]

I know, I wish i remembered exactly what my computer did, but when i switched video cards it caused issues with me going to DVI.
did you check the drivers?
Sorry I'm not much help....

 

[Malko]

I dont know what else coul do or check

I tryed different drivers, curently I have the latest ones, did install//unistall a severeal times, still the same

Out of Ideas

any other ground braking ideas, I will be happy

 

[Malko]

So I did some more magic, I maneged to get it to work, partly

I clicked in CCC the ''DVI lower refrsh rate'' or something like that and it started to work but it still flickers, it turn on turns off etc...

so now I am sure that the problem are the drivers since the monitor works and the output works, tryed 3 diferent drivers and still the same

what else can I do?