xorg.conf - get 1600x900 resolution working

[josh6847]

I have a laptop with ubuntu 8.10 and recently got a 1600x900 LCD monitor. Before that I had a 1024x768 monitor which I had dual monitor set up. I am trying to get the resolution on the new monitor to 1600x900 from 1024x768. Every time I try and change the resolution through the Screen Resolution program, my whole screen goes wack. I have tried adding in the the resolution manually (1600x900) to Mode and modeline. Does anyone have any other suggestions? Thanks for the help.

Heres my xorg.conf file:

Section "Device"
Identifier "ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]"
Driver "ati"
Busid "PCI:1:0:0"
Option "LVDSBiosNativeMode" "false"
Option "GARTSize" "64"
Option "AGPSize" "64"
Option "AGPMode" "4"
Option "XAANoOffscreenPixmaps"
Option "AGPMode" "8"
Option "AGPFastWrite" "True"
Option "EnablePageFlip" "true"
Option "EnableDepthMoves" "true"
Option "UseInternalAGPGART" "no"
Option "BackingStore" "on"
Option "UseInternalAGPGART" "no"
Option "DMAForXv" "true"
Option "AccelMethod" "XAA"
Option "ColorTiling" "on"
Option "AccelDFS" "true"
Option "TripleBuffer" "true"
Option "DynamicClocks" "on"
Option "RenderAccel" "true"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
Vendorname "Plug 'n' Play"
Modelname "Plug 'n' Play"
modeline "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
modeline "640x480@72" 31.5 640 664 704 832 480 489 491 520 -vsync -hsync
modeline "640x480@75" 31.5 640 656 720 840 480 481 484 500 -vsync -hsync
modeline "800x600@72" 50.0 800 856 976 1040 600 637 643 666 +hsync +vsync
modeline "800x600@75" 49.5 800 816 896 1056 600 601 604 625 +hsync +vsync
modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
modeline "832x624@75" 57.284 832 864 928 1152 624 625 628 667 -vsync -hsync
modeline "1024x768@75" 78.8 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
modeline "1024x768@70" 75.0 1024 1048 1184 1328 768 771 777 806 -vsync -hsync
modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
modeline "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
modeline "1600x900@60" 119.00 1600 1696 1864 2128 900 901 904 932 -hsync +vsync
Gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
Defaultdepth 24
SubSection "Display"
Depth 24
Virtual 2624 900
Modes "1600x900@60" "1024x768@60" "1280x960@60" "1024x768@70" "1024x768@75" "832x624@75" "800x600@60" "800x600@75" "800x600@72" "640x480@75" "640x480@72" "640x480@60"
EndSubSection
EndSection

Thanks again.

[khelben1979]

Are you using the latest native drivers from ATi?

[josh6847]

Hm... not totally sure. I messed with the driver a while back, and stayed away from tinkering with it because it was difficult to get working. Is that what you think is causing the issues?

[josh6847]

Also, my Screen and Graphics preferences doesn't even show up my second screen. Under Screen Resolution both monitors show up, and when selecting 1600x900 for my new monitor, it dis-aligns everything. And my ati driver is up to date I think.

Thanks for the help.

[khelben1979]

If you're using Catalyst (http://en.wikipedia.org/wiki/ATI_Catalyst) 9.3, you have the latest version. What does your Catalyst report?

Catalyst revisions (http://ati.amd.com/products/catalyst/versions.html).

[josh6847]

So, I got it working... I had to set Virtual to 3200x900. Not sure why that is. If I go any smaller than that it breaks. The only problem is that compiz got hit. In metacity everything works fine, but in compiz the window borders are gone and things are kooky. I can't remember how I fixed this before. Do you know?

[khelben1979]

No, I don't know. The thing I do know is that some versions of the ATi Catalyst is more buggy than the other one, so if you're using the latest driver you might be using a good version or... a bad version.