I recently acquired a ViewSonic VP2330wb monitor. Unfortunately, I have been unable to get linux configured to use the full width of the monitor (up to 1920x1200). I have tried several different resolutions (1920x1200, 1440x900, 1280x800), several different configurations of the /etc/X11/xorg.conf file where I set the resolution by hand in the file, choosing different configurations of the "Monitor Type" in the "System Setting"->"Display"->"Hardware" menu. It appears that I can't get linux configured for this aspect ratio. In the "System Setting"->"Display"->"Setting" none of the resolutions listed have the correct aspect ratio. The video card is an Intel Corporation 82915G/910GL Express Chipset Family Graphics Controller. I'm using the Intel 915 driver. This is all running on RedHat Linux Enterprise 4 on an IBM Think Center MT-M 8104. I'm basically out of ideas for how to get this to work. Any help would be greatly appreciated.

Thanks-in-advance,

Jerry

P.S. I'm new to this group so I apologize ahead of time if I miss something obvious.

Could you give us a bit more info please? What distro are you using? Can you post the relevant portion of your xorg.conf file? I'm guessing the problem is in your xorg.conf file, particularly with the horizontal or vertical refresh rates.

P.S. Welcome to LinuxQuestions.org!

I'm betting the integrated video just doesn't support resolutions that high.

The distribution is RedHat Enterprise 4 (same as Fedora Core 3?). The relevant portion of the xorg.conf is below.

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1280x800"
DisplaySize 500 310
HorizSync 31.5 - 90.0
VertRefresh 60.0 - 60.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "i810"
VendorName "Videocard vendor"
BoardName "Intel 915"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1280x800"
EndSubSection
EndSection

I don't know for sure that your vid card will support it. Assuming that it does, you'd need to add a few things in this portion of your xorg.conf...
On the Modes line, add 1920x1200 and any other resolution you'd like to use. You'll need to make this change for any Depth you'd like to use as well.
There may be a better/easier way to fix this, but this is how I know to do it.

Edit: Not all video cards support all wide screen formats. In my experience widescreen ratios vary from monitor to monitor, and you vid card may or may not natively support this ratio/resolution.

I did some digging and found the frequencies for this monitor as well. They don't match what you have in xorg.conf...
From the manufacturer website Viewsonic.

Thanks for the replies to my post. I have tried all the recommended changes to my xorg.conf, but none have worked. In fact when I put in the latest suggestions for the horizontal and vertical sync rates, the monitor just gave me an 'Out of Range' message and sat there. I was able to cntrl-alt-delete to halt the X-server and recover, but it appears that my video card just can't handle these resolutions. I'm surprised, since this is a new machine, but our IS people have a history of less-than-astute choices. I have started looking into new video boards. If anyone has any recommendations, please let me know. I am currently considering an nVidia GeForce 6800 GT/LE. The driver for it is listed under the 'Configure' menu for the video card for linux and the nVidia website claims it can do all resolutions up to 1920x1200. Thanks again for all your help.

I'm currently using a GeForce 6800GT in my main system and I'm pretty happy with it. I'm not sure if it will handle the widescreen ratio you're looking. I run it at 1280x1024 and I know it will go quite a bit higher. I'm just not sure about that specific widescreen format.

I made the original post about problems with getting a ViewSonic 23-inch VP2330wb monitor working. It worked fine when I recently switched to Fedora 6. It did not work with Fedora 5.