CentOS Graphics issue on Dell Optiplex 760's using intel driver

Gar gar.nelson at yahoo.com
Fri Aug 7 08:20:42 CDT 2009

I have Centos 5 on a Precision 380 with an Nvidia based video card.  It's currently driving two Dell E207WFP widescreen monitors at 1680x1050 resolution. 

I use an xorg.conf and manually edited the file for the correct horizontal and vertical settings for the displays, along with the display resolution I wanted.  I also use the proprietary Nvidia driver downloaded from Nvidia's site. 

So, I'd say there's nothing inherently wrong with Centos, or 'X'. My best guess would be that a) you need to manually edit xorg.conf, b) your intel driver is not up for it, or c) your intel graphics are not up for driving that kind of resolution.  If you're using an onboard Intel graphics chip, that would actually be my first guess. You might want to consider putting a decent graphics card in the box. 

I had an old Dell 2400 mini tower at home with Intel Extreme Graphic on board that were far from "extreme".  I never did manage to get decent video out of that box. Unfortunately, it didn't have ePCI or AGP slots either so I eventually ended up giving it away. 


----- Original Message ----

I am writing to ask if other are experiencing lot of problems with the 
CentOS 5 intel X Driver on Optiplex 760's?

In a batch that my work have just purchased I am finding that I can't 
get a resolution better than 1280 x 1024 @60Hz and that even when I get 
this resolution (according to the monitor) software tools like xrandr 
might report the resolution as 1024 x 768 @ 30Hz.  It also seems that 
there are no wide screen modes supported.

So firstly can anyone confirm of deny that this is a known issue?  And 
does anyone have any suggestions on how to improve the issue?

Just out of interest I tried installing Fedora 11 and this increased the 
number of modes available and seemed to make resolution shown is 
software match what the monitor said as far as resolution but still no 
widescreen modes are available.

Thank you for any thoughts or suggestions you have relating to this issue.

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