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Old 04-27-2012, 01:02 PM   #1
Registered: Apr 2011
Location: Philadelphia
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xrandr NOT Detecting My Laptop's Internal Display?

Hello All,

For some reason when I issue a "xrandr -q" it only show the resolutions/modes for my External LCD Monitor that is connected (through Docking Station).

My Laptop:
Laptop Model: Dell Latitude E6510
OS: openSUSE 11.4 i586
External Monitor: Acer AL2216W 22"
GPU: NVS 3100M
Driver: Nvidia Driver Version 295.40

I hope that is enough info...

And here's the output of xrandr -q:
xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 175, current 1680 x 1050, maximum 1680 x 1050
default connected 1680x1050+0+0 0mm x 0mm
   1680x1050      50.0    121.0     51.0     52.0     53.0* 
   1440x900       51.0     52.0  
   1400x1050      53.0     54.0  
   1360x765       55.0  
   1280x1024      56.0     57.0     58.0  
   1280x960       59.0     60.0  
   1280x720       61.0  
   1152x864       62.0  
   1024x768       63.0     64.0     65.0     66.0     67.0     68.0  
   960x720        69.0     70.0  
   928x696        71.0     72.0  
   896x672        73.0     74.0  
   832x624        75.0  
   800x600        76.0     77.0     78.0     79.0     80.0     81.0     82.0     83.0     84.0     85.0  
   720x400        86.0  
   700x525        87.0     88.0  
   640x512        89.0     90.0     91.0  
   640x480        92.0     93.0     94.0     95.0     96.0     97.0     98.0     99.0  
   640x400       100.0  
   640x350       101.0  
   576x432       102.0  
   512x384       103.0    104.0    105.0    106.0    107.0  
   416x312       108.0  
   400x300       109.0    110.0    111.0    112.0    113.0  
   360x200       114.0  
   320x240       115.0    116.0    117.0    118.0  
   320x200       119.0  
   320x175       120.0  
   1366x768      122.0     50.0
Right now when issuing that command I have my external Monitor connected with a DVI plug and the internal Monitor is ON in "TwinView" Mode. But for some reason it only show the External Monitor. Why is that?

Any suggestions would be great.

Thanks in Advance,
Old 04-28-2012, 08:40 AM   #2
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Registered: Jun 2008
Posts: 1,819

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Note that as you're using the Nvidia driver, it is controlled by its own program, "nvidia-xconfig". Open a terminal and look at "man nvidia-xconfig" and also look at the Nvidia README with its appendices.

"xrandr" apparently still has some function along with "nvidia-xconfig", giving you several possibilities at the price of more complexity.

Among other things, you can use the Nvidia program to specify and set resolutions for different monitors, manage TwinView, and also create an "xorg.conf" file that you can then edit. "xorg.conf" isn't otherwise and naturally generated on installing the Nvidia driver.

The README is quite detailed and the command options it documents are quite powerful. I would say READIT and pay attention to the appendices.

Last edited by thorkelljarl; 04-28-2012 at 08:49 AM.
Old 04-30-2012, 09:28 AM   #3
Registered: Apr 2011
Location: Philadelphia
Posts: 165

Original Poster
Rep: Reputation: 3
Hey thorkelljarl, thanks for the reply...

Yea, I have used the nvidia-xconfig command before and I thought that it was basically just for editing the xorg.conf file. Is that correct..?

So far while playing around with a monitor and a docking station I've come across the following (and tried using them ALOT):
- nvidia-settings
- nvidia-xconfig
- xrandr
- disper
- cvt and glxinfo
...and probably a few more I can't think of at the moment...

But anyway, I was just curious to know why it was only showing the "external" monitor and its resolution and not my Laptop's monitor as well.
So is xrandr basically becoming extinct?

Thanks again for you reply. And I will take a look at the nvidia-xconfig README, thanks.

Thanks Again,


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