Arch Linux

niem

Member

Registered: 2015-09-23

Posts: 1

xrandr doesn't detect second monitor

Greetings,

I have 2 monitors, one is plugged here (the main one):

$ lspci | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV790 [Radeon HD 4890]

And the other one is plugged here:

$ lspci | grep Display
00:02.0 Display controller: Intel Corporation 82G965 Integrated Graphics Controller (rev 02)

Output of `xrandr -q` is:

$ xrandr -q
Screen 0: minimum 320 x 200, current 1600 x 900, maximum 1600 x 1600
DFP1 disconnected (normal left inverted right x axis y axis)
DFP2 disconnected (normal left inverted right x axis y axis)
DFP3 disconnected (normal left inverted right x axis y axis)
CRT1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 443mm x 249mm
   1600x900      60.00*+
   1440x900      59.89  
   1280x800      75.00    60.00  
   1152x864      75.00    60.00  
   1280x768      74.89    59.87  
   1280x720      60.00  
   1024x768      75.03    70.07    60.00  
   800x600       72.19    75.00    70.00    60.32    56.25  
   720x480       59.98  
   640x480       75.00    72.81    59.95  
CRT2 disconnected (normal left inverted right x axis y axis

FYI the xorg.conf is this (generated with aticonfig --initial):

Section "ServerLayout"
        Identifier     "aticonfig Layout"
        Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Monitor"
        Identifier   "aticonfig-Monitor[0]-0"
        Option      "VendorName" "ATI Proprietary Driver"
        Option      "ModelName" "Generic Autodetecting Monitor"
        Option      "DPMS" "true"
EndSection

Section "Device"
        Identifier  "aticonfig-Device[0]-0"
        Driver      "fglrx"
        BusID       "PCI:1:0:0"
EndSection

Section "Screen"
        Identifier "aticonfig-Screen[0]-0"
        Device     "aticonfig-Device[0]-0"
        Monitor    "aticonfig-Monitor[0]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection

I have tried assigning a new Section "Device" with the BusID of the intel controller and Driver as "intel", but Xorg complained each time it couldn't find that module, resulting in a broken Xorg. I tried installing xf86-video-intel but it conflicts with the xorg I got (xorg111), since I needed that xorg for the catalyst-total-hd234k package.
I have tried a few things and xorg broke each time I did. I really don't know what to do.

Any ideas, anyone?

jnhieber

Member

From: Germany

Registered: 2011-02-01

Posts: 23

Re: xrandr doesn't detect second monitor

Maybe give the open source driver a chance: https://wiki.archlinux.org/index.php/ATI

This way you can use up to date X11, kernel and intel driver.
I don't think that it will work your way without the intel driver.