Dual Monitors with Radeon HD 2400 Pro

[Charlie Kravetz]

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On Fri, 19 Sep 2008 06:18:41 -0500
Job Evers <jobevers at gmail.com> wrote:

> Subject changed.
> 
> Charlie Kravetz wrote:
> > However, perhaps https://wiki.ubuntu.com/X/Config will be helpful.
> 
> I gave that a shot.  When I started up X, it gave me my good old
> mirrored/cloned display.
> 
> I was confused about one part:
> 
> > The third is the name of your device's output name. In the above, it
> > is "Monitor-VGA-0", but it could be "Monitor-VGA0" or something. Look
> > at the output of xrandr to see what name your graphics driver uses.
> 
> I don't see anything in the output (pasted below) that looks like 
> Monitor-VGA-0.

I think that part is out of date. Per
https://help.ubuntu.com/community/RadeonDriver
which is for ati video cards, you should be able to use any name you
want to for the monitors. 
> 
> 
> Here is my xorg.conf:
> 
> Section "Files"
> EndSection
> 
> Section "Module"
> 	Load		"glx"
> EndSection
> 
> Section "InputDevice"
> 	Identifier	"Generic Keyboard"
> 	Driver		"kbd"
> 	Option		"XkbRules"	"xorg"
> 	Option		"XkbModel"	"pc105"
> 	Option		"XkbLayout"	"us"
> EndSection
> 
> Section "InputDevice"
> 	Identifier	"Configured Mouse"
> 	Driver		"mouse"
> 	Option		"CorePointer"
> EndSection
> 
> Section "Monitor"
> 	Identifier	"Right Monitor"
>          Option          "Right Of" "Left Monitor"
> 	Option		"DPMS"	"true"
> EndSection
> 
> Section "Monitor"
> 	Identifier	"Left Monitor"
> 	Option		"VendorName"	"ATI Proprietary Driver"
> 	Option		"ModelName"	"Generic Autodetecting Monitor"
> 	Option		"DPMS"	"true"
> EndSection
> 
> Section "Device"
> 	Identifier	"Configured Video Device"
> 	Driver		"fglrx"
> 	BusID           "PCI:1:0:0"
> 	Option          "Monitor-VGA-0" "Left Monitor"
>          Option          "Monitor-DVI-0" "Right Monitor"
> EndSection
> 
> Section "Screen"
> 	Identifier	"Default Screen"
> 	Device		"Configured Video Device"
> 	Defaultdepth	24
> 	SubSection "Display"
> 		Viewport	0	0
> 		Depth	24
> 		Virtual	2880 900
> 	EndSubSection
> EndSection
> 
> Section "ServerLayout"
>          Identifier      "Default Layout"
>          Screen          "Default Screen"
>          InputDevice     "Generic Keyboard"
>          InputDevice     "Configured Mouse"
> EndSection
> 
> Also, here is the output from xrandr:
> 
> Screen 0: minimum 320 x 200, current 1440 x 900, maximum 2880 x 900
> default connected 1440x900+0+0 0mm x 0mm
>     1440x900       60.0*
>     1280x768       60.0
>     1280x720       60.0
>     1152x864       75.0     70.0     60.0
>     1024x768       75.0     72.0     70.0     60.0
>     800x600        75.0     72.0     70.0     60.0     56.0
>     720x480        60.0
>     640x480        75.0     72.0     60.0
>     640x432        60.0
>     640x400        75.0     60.0
>     512x384        75.0     60.0
>     400x300        75.0     60.0
>     320x240        75.0     60.0
>     320x200        75.0     60.0
>     2880x900       60.0
> 
> Thanks in advance for all the help.
> 
> -Job

Here is another page on the community help wiki that might help:
https://help.ubuntu.com/community/Video

Basically, they refer you back to the ati page for dual head (dual
monitor), https://help.ubuntu.com/community/RadeonDriver#MergedFB

You may need to define 2 screens in the "ServerLayout" section. I only
see one screen defined now, which may be why they are clones.

good luck,

- -- 
Charlie Kravetz 
Linux Registered User Number 425914          [http://counter.li.org/]
Never let anyone steal your DREAM.           [http://keepingdreams.com]
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