Odd problem with dual-headed Matrox G450 and X4.2.0

[rasmussen]

Hi guys,

I've got a really odd problem. Until two days ago I had Suse 7.3 on my box, running a dual-headed X 4.2.0 on a Matrox G450 with 2 (identical) Samsung SyncMaster 959NF monitors. No problem at all.

Enter <feel need to install Gentoo>. System was installed, and X compiled without any problems too. I then took my old XF86Config and plugged it in.

Problem is that although identical monitors, and idential modelines, the outputs are not identical. "Screen[0]" is considerably smaller (on the monitor) than "Screen[1]". Unfortunately, the adjustment limits on the monitor have already almost been reached so that way I can't do anything.

Odd thing is that if I swap "Screen[0]" and "Screen[1]" in the ServerLayout section, then the problem moves to the other monitor, with the first now showing a correctly sized image.

And here it is: If I go back to an install of Suse 7.3, the problem magically disappears (!!)


Does anybody have a suggestion of what might be wrong? (XF86Config included below).

Thanks.




XF86Config:

[rasmussen]

Seems that I've kinda solved the problem

For some reason the identical Modelines in the posted XF86Config do not get the same hsync, vsync parameters....

Explicitly adding -hsync -vsync to both Modelines apparently solves the problem I don't get it.