ATi Resolution Problem

[beezm]

I currently own an ATi Radeon 9500 Pro. I have had this problem for quite a few months now and I'm finally deciding to try to fix it.

I have a 15" Flatpanel LCD Monitor as my primary monitor hooked up to my card. Whenever my computer posts, or pretty much so just isn't in Windows, the card spits out a weird resolution in which my LCD monitor cannot support, so I just get the message VGA MODE NOT SUPPORTED on the screen. Well, if I hook up my second monitor to the DVI port with a VGA adapter, it displays on both monitors just fine. Even if I were to just have it plugged in for a second when the computer boots up, then unplug it, the resolution is fine on the primary monitor and it shows up.

Well I wasn't too worried about it before, because I figured, hey I can just plug in the other monitor when I need to. Well I decided to throw Slackware Linux back on my other partition again, well I didn't have my 2nd monitor plugged in later on, guess what... I can't see my boot menu, once I guess my way into Linux, I still can't see anything, just the VGA MODE error. I'm going to college in a few weeks and cannot bring both of my monitors, that is why I am attempting to address this problem now.

I was thinking maybe there is an updated BIOS that I could flash the card with or something ?

Thanks,
Stewart

 

[mwmorph]

it just might not support 640x480 which i believe is vga mode over your current connection.

 

[beezm]

I should have stated that ... the lcd is plugged into the normal VGA port, the 2nd monitor gets plugged into the DVI port.

Another thing I should have mentioned is it use to work just fine, just a few months back it suddently decided to do this.

 

[Pete]

Does the 15" LCD show the boot screens if it's plugged into an adapter on the DVI out? If so, why not leave it there all the time?

I don't think the monitor is telling you that the literal VGA (640x480) mode isn't supported, but rather that whatever the video card is outputting isn't supported (be it VGA or CGA or WUXGA).

Could be the card is broken, or maybe yours has the rolling lines problem with the VGA output and it's affecting your LCD. Is it under warranty?