topcaser
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Junior Boarder
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Radeon HD 2600 XT, problems with no signal on HDMI cable? - 2007/08/19 08:25
Hi, I have got a problem with the new Radeon HD 2600 XT series together with my LCD LB2R during boot, connection with HDMI cable, DVI-HDMI adapter is fully connected. But since the beginning, I the installed Sapphire Radeon HD 2600 XT and connected a HDMI cable to it and to my monitor. You know the splash screen of the BIOS, detecting IDE devices... And that kind of stuff at the beginning of the boot? I can not see this. Instead my monitor says, no signal. I booted up Windows but again no signal. I switched off the PC and connected another cable to this card, a S-Video cable.
And I got all the messages at the beginning of the boot again via this connection and was able to install drivers for this card. Good... I did a reboot disconnected the S-Video cable and connected the HDMI cable again. but again no splash screen messages at all. First as Windows started up and loaded the drivers the no signal message disappears and the monitor worked correctly. Then, I installed another card in the system, a Sapphire Radeon HD 2400 XT and with this card the splash screen was visible. Things were very good.
Now I have bought another card, the Palit Radeon HD 2600 XT. And it is the same as with the Sapphire Radeon HD 2600 XT. First as I had not installed any drivers at all, I did not get any signal to the monitor, during boot and during normal Windows operation. Had to connect a S-Video cable, install drivers, connect HDMI cable again and no splash screen but Windows works correctly as soon as the drivers are loaded...
It is very odd. But I think, it is the graphics card which has saved in its BIOS a resolution and/or frequency combo which the LCD don't understands. The question is, am I able to adapt this? Where do I have to look for this issue? I have read at the NVIDIA guide you posted on this site, that there are some switches for debugging. Are there any for ATI, too? Isn't it that the card exchanges resolution and/or frequency combos with the monitor via a certain channel during boot? Hope you can help me...
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