[SUCCESS] CTPCI Radeon wth DVI

[wongck]

My Radeon 7500 has a DVI and a VGA port.
I can only use the VGA port as my LCD only has a VGA.
Recently I tried using a DVI-VGA converter on the DVI port, but nothing came out.
How to have video out via the DVI instead of VGA ?

[mfro]

If I remember right, the card/code is supposed to sense the port where a monitor is connected at boot time itself. Maybe your converter doesn't forward signals correctly?

[wongck]

Mmm.... ok, I didn't know that.
I am using a KVM for the video, I monitor the CTCPI ATI debug and then switch over to the DVI port.
May be I keep it all the way on the DVI port without switching.
However, on VGA it works. May be DVI is different.

[paul92706]

I would love to know more about this too, i also only get VGA working and not DVI.

[Ektus]

I've had one card that would output VGA but no DVI. Another card (same brand, same layout, no visible difference) works for both ports. It may be just a matter of the card's BIOS, or a faulty device.


Regards
Ektus.

[mfro]

Mmm.... ok, I didn't know that.
I am using a KVM for the video, I monitor the CTCPI ATI debug and then switch over to the DVI port.
May be I keep it all the way on the DVI port without switching.
However, on VGA it works. May be DVI is different.

Just checked the FireBee code (that I suppose is the same for the CTPCI).

It's a little different than I thought: if port 1 is VGA and port 2 is DVI (as it is the case for most of my ATI cards), DVI (port 2) is only used if there is *no* monitor detected on port 1.
I would assume a standard KVM will report a "fake" monitor connected on any port, so you probably should try and completely disconnect your VGA port.

[wongck]

I would love to know more about this too, i also only get VGA working and not DVI.

Ah so, I see that other also face somewhat similar issues on trying to use DVI.

I've had one card that would output VGA but no DVI. Another card (same brand, same layout, no visible difference) works for both ports. It may be just a matter of the card's BIOS, or a faulty device.

May be it is possible to see some firmware information via the lspci command? I am not so sure about it.
Would be some effort/work for you to change few cards just to find out.

[wongck]

It's a little different than I thought: if port 1 is VGA and port 2 is DVI (as it is the case for most of my ATI cards), DVI (port 2) is only used if there is *no* monitor detected on port 1.
I would assume a standard KVM will report a "fake" monitor connected on any port, so you probably should try and completely disconnect your VGA port.

Thanks for this information.
I saw the monitor probe on the debug mode.... my ATI7000 with only VGA port, the probe was done twice.
The ATI7500, the probe was done 4 time... but I do not have the details.. I will take note now.

[wongck]

Unfortunately even with connection to one video port, DVI is not working.
Regardless of whether the video cable is connected to DVI or VGA port, it always reports Monitor 1 as CRT.
May be I need a real DVI LCD connected to the DVI port... but will probably only getting one when current LCD dies.

[wongck]

Yay !!!
I got a cheapo old Philips LED with DVI/VGA input to replace my old DELL LCD.
The ATI EDID probe found the DVI LED on the first go !!!
Screen scrolls real fast, as it was enumerating all the display rez it is capable of.
The output from the DVI is way better than the VGA

[viking272]

Good result wongck!

[paul92706]

Awesome wongck! What kinda cable did you use? Was it just a standard DVI to DVI cable?

[wongck]

What kinda cable did you use? Was it just a standard DVI to DVI cable?

Yup, just standard DVI-DVI cables. Nothing special.

[paul92706]

What kinda cable did you use? Was it just a standard DVI to DVI cable?

Yup, just standard DVI-DVI cables. Nothing special.

I JUst got my DVI working, pretty cool.

[wongck]

Glad you got it working.

[Rustynutt]

Confused wongck. Is your DVI out working without the KVM and VGA D/Q'ed?

[wongck]

Confused wongck. Is your DVI out working without the KVM and VGA D/Q'ed?

It does not work with the KVM ( which is a VGA only KVM). I have not a DVI KVM.
So it's straight from my ATI card to the LCD.

Finally, I get 1920x1080 from my Falcon
I wonder why using VGA, it does not show this resolution. Need to google why.

[mzry]

Hey wongck, I was wondering, does the ctpci/ati pass through the videls frame buffer if you want to play games or watch demos? Apparently the SV does that, so I was just curious about your setup.

[Ektus]

The ctpci can't do that. But as my monitors have two input connectors, I've simply connected both Videl and Ati, and can switch between them on the monitor.

Regards
Ektus.

[wongck]

Glad that Ektus answered you.
I have no clue what you mean by pass through the videls frame buffer if you want to play games or watch demos

[wongck]

I finally get HD via VGA.
Nothing wrong with the ATI card nor the LCD.
It was the KVM that somehow inhibited it.
Connecting ATI directly to LCD via VGA, I was able to select 1920x1080 in the ATI video control panel.
There was even an asterisk denotes the preferred mode.
That was missing when I had it hooked to my KVM. It was from ATEN, supposed to be a good brand.

Facepalm-GIF.gif

[Rustynutt]

Confused wongck. Is your DVI out working without the KVM and VGA D/Q'ed?

It does not work with the KVM ( which is a VGA only KVM). I have not a DVI KVM.
So it's straight from my ATI card to the LCD.

Finally, I get 1920x1080 from my Falcon
I wonder why using VGA, it does not show this resolution. Need to google why.

KVM In my old laboratory with intense simulation networks, KVM = Killing vital multimedia
Constantly hardware was to be replaces due to regular security updates to softs and networks.
At home, try just the cable first