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joephantom

Member

From: Latinoamérica

Registered: 2008-01-09

Posts: 94

Website

xrandr -q doesn't detect any display

Xrandr -q doesn't detect the displays that are connected:

xrandr -q
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 2680 x 1050
default connected 1680x1050+0+0 0mm x 0mm
   1680x1050      60.0*
   1440x900       60.0 
   1400x1050      60.0 
   1280x1024      75.0     70.0     60.0 
   1280x960       60.0 
   1280x768       60.0 
   1280x720       60.0 
   1152x864       75.0     70.0     60.0 
   1024x768       75.0     72.0     70.0     60.0 
   1024x480       60.0 
   960x720        60.0 
   864x648        60.0 
   856x480        60.0 
   848x480        60.0 
   800x600        75.0     72.0     70.0     60.0     56.0 
   720x576        60.0 
   720x480        60.0 
   704x480        60.0 
   640x480        75.0     72.0     60.0 
   640x400        75.0     60.0 
   512x384        60.0 
   400x300        75.0     60.0 
   320x240        75.0     60.0 
   320x200        75.0     60.0 
   2680x1050      60.0

I have the two monitors connected, one to the VGA port, the other to the DVI port of my ATI 850

My xorg.conf:
http://pastebin.com/m5a04f858

¿Any ideas?

Last edited by joephantom (2009-02-22 21:54:54)

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By striving to do the impossible, man has always achieved what is possible. Those who have cautiously done no more than they believed possible have never taken a single step forward - Mikhail Bakunin

joephantom

Member

From: Latinoamérica

Registered: 2008-01-09

Posts: 94

Website

Re: xrandr -q doesn't detect any display

Up.

Any ideas?

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By striving to do the impossible, man has always achieved what is possible. Those who have cautiously done no more than they believed possible have never taken a single step forward - Mikhail Bakunin

Inxsible

Forum Fellow

From: Chicago

Registered: 2008-06-09

Posts: 9,183

Re: xrandr -q doesn't detect any display

I don't have an ATI card, so I can only speculate...are you using the latest catalyst drivers?

ati-config is the tool (i think) that helps you generate a new xorg.conf. You might want to back up your current xorg.conf and generate a new one and see if it works with the latest catalyst drivers.

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konni

Member

From: berlin

Registered: 2008-09-25

Posts: 99

Re: xrandr -q doesn't detect any display

the catalyst driver doesnt specify xrandr outputs, so you have to set it up manually in the xorg.conf - like Inxsible said.
Or use the xf86-video-ati driver which should work fine with your card.

joephantom

Member

From: Latinoamérica

Registered: 2008-01-09

Posts: 94

Website

Re: xrandr -q doesn't detect any display

First, thanks for the answers.

the catalyst driver doesnt specify xrandr outputs, so you have to set it up manually in the xorg.conf - like Inxsible said.
Or use the xf86-video-ati driver which should work fine with your card.

Using the xf86-video-ati driver works fine. I'm using this options of xrandr:

 xrandr --output VGA-0 --mode 1680x1050 --output DVI-0 --mode 1680x1050 --right-of VGA-0

But I would like to have a good 3D performance. I have already tried using aticonfig.
It should work using:

aticonfig --dtop=horizontal --overlay-on=1

But it doesn't... it works as if configured it with clonning even thought it's configure to work on horizontal. --dtop=single does work as stated by aticonfig --help. I don't understand why an option of dtop works as stated and the other one doesn't.

I think I shoul create a new thread, it's not the same problem as before (Ididn't know that xrandr doesn't work with fglrx driver).

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By striving to do the impossible, man has always achieved what is possible. Those who have cautiously done no more than they believed possible have never taken a single step forward - Mikhail Bakunin