Monitor Doesn't Work with Video Card (worked in windows xp)

Can you give the output of:

sudo lshw -C display; lsb_release -a; uname -a

Thanks

sudo lshw -C display; lsb_release -a; uname -a
[sudo] password for harman:
  *-display:0
       description: VGA compatible controller
       product: RV370 5B60 [Radeon X300 (PCIE)]
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:43 memory:d0000000-d7ffffff ioport:dc00(size=256) memory:dfde0000-dfdeffff memory:dfe00000-dfe1ffff
  *-display:1 UNCLAIMED
       description: Display controller
       product: RV370 [Radeon X300SE]
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 0.1
       bus info: pci@0000:01:00.1
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:dfdf0000-dfdfffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
Linux LongNeck 3.2.0-31-generic-pae #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012 i686 i686 i386 GNU/Linux
harman@LongNeck:~$

Have you tried installing the proprietary driver, it may help.

I couldn't find a driver. I ran your command again with both monitors up and running.

sudo lshw -C display; lsb_release -a; uname -a
[sudo] password for harman:
  *-display:0
       description: VGA compatible controller
       product: RV370 5B60 [Radeon X300 (PCIE)]
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:43 memory:d0000000-d7ffffff ioport:dc00(size=256) memory:dfde0000-dfdeffff memory:dfe00000-dfe1ffff
  *-display:1 UNCLAIMED
       description: Display controller
       product: RV370 [Radeon X300SE]
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 0.1
       bus info: pci@0000:01:00.1
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:dfdf0000-dfdfffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
Linux LongNeck 3.2.0-31-generic-pae #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012 i686 i686 i386 GNU/Linux

https://help.ubuntu.com/community/BinaryDriverHowto/ATI

Thanks for the link and spending some time on my problem. I tried the link, downloaded the theoretical driver, changed the permissions to r/w/e, typed sudo ./ati-driver-installer-9.3-x86.x86_64.run, typed in my password, and got "can't open". Any other suggestions? Thanks!

Is there a way to force a particular monitor resolution? It seems that ubuntu is automatically looking at the capabilities of the video card each time I start up the OS and trying to max out what the card offers.

There is the driver in the additional drivers app. Much easier