LCD Screen Resolution

[mgh21]

Hello,

The motherboard of my AMD 64 bit PC failed, so I connected the LG Flatron L194WT-SF monitor to my old PC with a Matrox video card, but cannot get anything better than 800x600 resolution. I am running FeeBSD 8.2 (was using OpenSolaris on the newer PC.) Is there any simple way to fix this?

As well as many other things, X says:

(II) MGA(0): <default monitor>: Using default hsync range of 31.50-37.90 kHz
(II) MGA(0): <default monitor>: Using default vrefresh range of 50.00-70.00 Hz
(WW) MGA(0): Unable to estimate virtual size
(II) MGA(0): Clock range:  17.75 to 1200.00 MHz
(II) MGA(0): Not using default mode "640x350" (vrefresh out of range)
(II) MGA(0): Not using default mode "320x175" (bad mode clock/interlace/doublescan)
(II) MGA(0): Not using default mode "640x400" (vrefresh out of range)
(II) MGA(0): Not using default mode "320x200" (bad mode clock/interlace/doublescan)
(II) MGA(0): Not using default mode "720x400" (vrefresh out of range)
(II) MGA(0): Not using default mode "360x200" (vrefresh out of range)
(II) MGA(0): Not using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) MGA(0): Not using default mode "640x480" (vrefresh out of range)
(II) MGA(0): Not using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) MGA(0): Not using default mode "640x480" (vrefresh out of range)
(II) MGA(0): Not using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) MGA(0): Not using default mode "640x480" (hsync out of range)
(II) MGA(0): Not using default mode "320x240" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "400x300" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "400x300" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "400x300" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (vrefresh out of range)
(II) MGA(0): Not using default mode "512x384" (vrefresh out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(II) MGA(0): Not using default mode "512x384" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(II) MGA(0): Not using default mode "512x384" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(II) MGA(0): Not using default mode "512x384" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(II) MGA(0): Not using default mode "512x384" (hsync out of range)
(II) MGA(0): Not using default mode "1152x864" (hsync out of range)
(II) MGA(0): Not using default mode "576x432" (hsync out of range)
(II) MGA(0): Not using default mode "1280x960" (hsync out of range)
(II) MGA(0): Not using default mode "640x480" (hsync out of range)
(II) MGA(0): Not using default mode "1280x960" (hsync out of range)
(II) MGA(0): Not using default mode "640x480" (hsync out of range)
(II) MGA(0): Not using default mode "1280x1024" (hsync out of range)
(II) MGA(0): Not using default mode "640x512" (hsync out of range)
(II) MGA(0): Not using default mode "1280x1024" (hsync out of range)
(II) MGA(0): Not using default mode "640x512" (hsync out of range)
(II) MGA(0): Not using default mode "1280x1024" (hsync out of range)
(II) MGA(0): Not using default mode "640x512" (hsync out of range)
(II) MGA(0): Not using default mode "1600x1200" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "1600x1200" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "1600x1200" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "1600x1200" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "1600x1200" (hsync out of range)
(II) MGA(0): Not using default mode "800x600" (hsync out of range)
(II) MGA(0): Not using default mode "1792x1344" (hsync out of range)
(II) MGA(0): Not using default mode "896x672" (hsync out of range)
(II) MGA(0): Not using default mode "1792x1344" (hsync out of range)
(II) MGA(0): Not using default mode "896x672" (hsync out of range)
(II) MGA(0): Not using default mode "1856x1392" (hsync out of range)
(II) MGA(0): Not using default mode "928x696" (hsync out of range)
(II) MGA(0): Not using default mode "1856x1392" (hsync out of range)
(II) MGA(0): Not using default mode "928x696" (hsync out of range)
(II) MGA(0): Not using default mode "1920x1440" (hsync out of range)
(II) MGA(0): Not using default mode "960x720" (hsync out of range)
(II) MGA(0): Not using default mode "1920x1440" (hsync out of range)
(II) MGA(0): Not using default mode "960x720" (hsync out of range)
(II) MGA(0): Not using default mode "832x624" (hsync out of range)
(II) MGA(0): Not using default mode "416x312" (hsync out of range)
(II) MGA(0): Not using default mode "1400x1050" (hsync out of range)
(II) MGA(0): Not using default mode "700x525" (hsync out of range)
(II) MGA(0): Not using default mode "1400x1050" (hsync out of range)
(II) MGA(0): Not using default mode "700x525" (hsync out of range)
(II) MGA(0): Not using default mode "1920x1440" (hsync out of range)
(II) MGA(0): Not using default mode "960x720" (hsync out of range)
(II) MGA(0): Not using default mode "2048x1536" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(II) MGA(0): Not using default mode "2048x1536" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(II) MGA(0): Not using default mode "2048x1536" (hsync out of range)
(II) MGA(0): Not using default mode "1024x768" (hsync out of range)
(--) MGA(0): Has SDRAM
(--) MGA(0): Virtual size is 800x600 (pitch 800)
(**) MGA(0): *Default mode "800x600": 40.0 MHz, 37.9 kHz, 60.3 Hz
(II) MGA(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz)
(**) MGA(0): *Default mode "800x600": 36.0 MHz, 35.2 kHz, 56.2 Hz
(II) MGA(0): Modeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz)
(**) MGA(0): *Default mode "640x480": 25.2 MHz, 31.5 kHz, 59.9 Hz
(II) MGA(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz)
(**) MGA(0): *Default mode "400x300": 20.0 MHz, 37.9 kHz, 60.3 Hz (D)
(II) MGA(0): Modeline "400x300"x60.3   20.00  400 420 484 528  300 300 302 314 doublescan +hsync +vsync (37.9 kHz)
(**) MGA(0): *Default mode "400x300": 18.0 MHz, 35.2 kHz, 56.3 Hz (D)
(II) MGA(0): Modeline "400x300"x56.3   18.00  400 412 448 512  300 300 301 312 doublescan +hsync +vsync (35.2 kHz)

and before this:

X.Org X Server 1.7.5
Release Date: 2010-02-16
X Protocol Version 11, Revision 0
Build Operating System: FreeBSD 8.0-RELEASE-p6 i386 
Current Operating System: FreeBSD gilbert.mgh.private.ac.uk 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011     root@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
Build Date: 02 February 2011  12:50:49PM

and

(--) PCI:*(0:2:0:0) 102b:0525:102b:0541 Matrox Graphics, Inc. MGA G400/G450 rev 133, Mem @ 0xf2000000/33554432, 0xfeafc000/16384, 0xfe000000/8388608, BIOS @ 0x????????/65536
(--) PCI: (0:1:12:0) 109e:036e:0070:13eb Brooktree Corporation Bt878 Video Capture rev 17, Mem @ 0xf16fe000/4096
(==) Using default built-in configuration (30 lines)
(==) --- Start of built-in configuration ---
	Section "Device"
		Identifier	"Builtin Default mga Device 0"
		Driver	"mga"
	EndSection