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jpking10

Member

Registered: 2012-05-26

Posts: 2

Changing screen resolution with xrandr [SOLVED]

My current setup consists of two different monitors (different resolutions) being connected to a single Nvidia card (neouveau driver).

The problem is that the monitor resolution does not change when I use xrandr to change the resolution. What does happen is the resolution of the output changes so that all items on the screen are smaller, but as a consequence of the monitor resolution staying constant (at 1440x900) this also leads to everything getting blury.

Output for xrandr after booting: 

Screen 0: minimum 320 x 200, current 1440 x 900, maximum 8192 x 8192
DVI-I-1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 360mm x 290mm
   1440x900       60.2*+
   1920x1080      60.0  
   1280x1024      75.0     60.0  
   1360x768       60.4  
   1024x768       75.1     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
DVI-I-2 disconnected (normal left inverted right x axis y axis)

Output after changing the resolution to 1920x1080:

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
DVI-I-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 360mm x 290mm
   1440x900       60.2 +
   1920x1080      60.0* 
   1280x1024      75.0     60.0  
   1360x768       60.4  
   1024x768       75.1     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
DVI-I-2 disconnected (normal left inverted right x axis y axis)

I have set up both of these monitors to work fine today, except for the resolution problem. The DVI-I-2 seen has a maximum resolution of 1440x900, which is what both monitiors are running at although DVI-I-1 has a max of 1920x1080.

Does anyone have any ideas on how to succeed in setting DVI-I-1 to the desired resolution?

Last edited by jpking10 (2012-05-26 18:27:47)

DSpider

Member

From: Romania

Registered: 2009-08-23

Posts: 2,273

Re: Changing screen resolution with xrandr [SOLVED]

http://nouveau.freedesktop.org/wiki/FeatureMatrix

Is your GPU in the green and "BIOS" on the Dual thinghie? If not, you should probably be using the nvidia package instead of Nouveau.

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jpking10

Member

Registered: 2012-05-26

Posts: 2

Re: Changing screen resolution with xrandr [SOLVED]

Yes, GPU support for dual head is there. I think I will try out the Nvidia drivers.

Edit: I have installed the Nvidia driver and everything is working perfectly. Thanks for your suggestion.

Last edited by jpking10 (2012-05-26 18:25:47)