displayresolution
I got new monitor hp la2205 with recomended resolution 1680 x 1050
But when I'm trying to set resolution via display properties , the option 1680 x 1050 does not appear in list of modes
Graphics card : ATI Radeon HD 3450
OS : Windows XP sp3
What can be the issue ?
Thanks
The most likely reason is that the EDID data of your monitor is corrupted or not transferred correctly.
EDID tells your system which features the monitor has and which resolution it supports.
First check if there's anything which could prevent the EDID exchange: Broken cable, damaged connector, VGA-DVI adapter, one-monitor-two-workstations switch, ...
You could try to completly disable EDID for your monitor, a quick Google search revealed that this frequently resolved similar problems for other users.
If this can't be done with the driver software, a last resort would be to disable the pins responsible for EDID on your DVI cable.
Taken from: http://www.overclock.net/ati/47962-way-disable-edid.html
However do be careful: do your own research first and best try with a separate DVI cable first.
I just wanted to do it a bit more specific reference:
Setting up the resolution to 1280x1024 (this is enable GPU funtion in catalyst control center):
Manually scaling the resolution in Catalyst Control Center:
Set up the resolution to 1920x1080:
Note: A computer restart must be done to apply changes.
Best Answer
What graphics card is your computer using? My first thought is that your graphics card can't deliver that resolution, or that the correct drivers aren't installed.
So you should first check whether your computer is even capable of delivering that resolution. (You can also update your question with information about your computer/graphics card - then fellow SuperUsers can help you determine if the hardware is good enough.)
If the hardware is good, then check if the correct software is in place and properly configured. Tell us if you're using Windows, and which Windows version that is.
Update: Well, your card certainly can provide this resolution. Next, download the latest ATI display driver (here is a direct link) and see if that helps!