[Chimera-users] Technical advice on synchronizing display on two monitors under Centos 6.5

Greg Couch gregc at cgl.ucsf.edu
Thu Nov 6 15:17:02 PST 2014

A caveat, we don't have any Linux systems with NVIDIA graphics and two 
screens right now, so this is generic advice.

Also, I have a bias against laptops that have business graphics, like 
the NVIDIA NGS4200, but it should still work.  And I have a bias against 
using a server Linux, like CentOS 6.5, instead of a desktop Linux, like 
Ubuntu for 3D graphics -- the X server in the desktop Linux 
distributions is better than the one in the server distributions and the 
graphics drivers take advantage of that fact.

So my first recommendation would be to switch to Ubuntu 14.10 and 
install the proprietary NVIDIA graphics driver from the Ubuntu 
repository.  If you want to stick with CentOS, then I'd recommend 
upgrading to version 6.6 or even better version 7, but even if you stick 
with 6.5, you should the latest NVIDIA driver from nvidia.com.

Then, use the nvidia-settings program to set the display configuration.  
If nvidia-settings doesn't do what you need, then read the extensive 
release notes for the NVIDIA driver (typically in 
/usr/share/nvidia*/html/index.html) and edit the X configuration manually.



On 11/06/2014 03:43 AM, Boaz Shaanan wrote:
> Hi Greg,
> I'm writing to get your expert advice on the following: I have a 
> laptop with Nvidia NGS4200 card docked into a docking a station with 
> an extra monitor connected. Under Windows (XP or W7) and Mandriva 
> linux there is no problem synchronizing the laptop and the external 
> monitors whether it's for Chimera or anything else. However,  I can't 
> find the trick to do so under Centos 6.5 (I switched to this system 
> for several reasons). I tried the xrandr command but does not provide 
> a complete synchronization/duplication. Do you have any advice on what 
> I should do to get it right?
> I would be most grateful.
>        Cheers,
>                 Boaz
> /Boaz Shaanan, Ph.D.
> Dept. of Life Sciences
> Ben-Gurion University of the Negev
> Beer-Sheva 84105
> Israel
> E-mail: bshaanan at bgu.ac.il
> Phone: 972-8-647-2220  Skype: boaz.shaanan
> Fax:   972-8-647-2992 or 972-8-646-1710 /
> //
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