ATI Radeon 9200 DVI output to Widescreen display

brenton · 06-09-2004, 11:40 PM

I'm trying to get Linux running on my HTPC. Slackware Linux, kernel 2.6.6, Radeon 9200 with the latest xorg in slackware-current.

First problem was trying to get the widescreen display working. It's native resolution is 1360 x 768, so i made a modeline and tried that, no working screen found. I also tried 1368 x 768 because in windows 1360 doesn't work (I read it was a limitation of the graphics card) but it wouldn't work either.

So, I installed the ATI drivers, compiled and installed the modules, made a new config with fglrxconfig. Now, when I startx the screen just goes black. I think the problem is in these two lines:

Quote:

Option "DesktopSetup" "0x00000000"
Option "MonitorLayout" "AUTO, AUTO"

This is the way I had it set up at first, according to fglrxconfig this is Single monitor, blank second screen. I tried another configuration, but it's still the same. I'm fairly sure that the DVI display is being blanked, because it goes completely black. Usually the screen has lines of colour flashing across it (something to do with the frequency), when i log into Windows it stops. So in Windows no flashing coloured lines means the driver is being used, i assume it's the same in Linux.

So how do i set up xorg.conf/XF86Config to use the dvi display?

brenton · 06-10-2004, 12:31 AM

Something else, When i startx I get the message:

Quote:

(WW) fglrx: No matching Device section for instance (BusID PCI:1:0:1) found

But /var/log/Xorg.0.log looks fine. If I change "BusID PCI:1:0:0" to "BusID PCI:1:0:1" in xorg.conf same thing happens, but Xorg.0.log ends with an error.

brenton · 06-11-2004, 05:17 AM

To anyone that found this thread by searching:

It doesn't look like DVI works with ATI drivers atm (3.9). Works with the Radeon driver, but the frequency is too high so there's screen flicker. I went and bought a good analog monitor cable that will work. I don't really notice any difference (although it's only from memory, not a proper side by side test). If your using a high res LCD and need DVI, as far as i can tell, don't use ATI.

Widescreen works too. I had a look at the settings from powerstrip that work in windows, and using this modeline guide came up with this: (like i said before the Fujitsu HD display is 1360 x 768, but graphics cards can't output that res (except matrox iirc), so the next best thing is 1368x768)

In the monitor section of XF86Config or xorg.conf:
Modeline "1368x768" 85.47 1368 1436 1548 1792 768 771 777 795 +HSync +VSync

I had to chang some of the numbers to centre the image. I logged into X, ran xvidtune, moved the image, and changed the numbers in xorg.conf.