dual head configuration

David L idht4n at gmail.com
Mon May 10 15:30:48 UTC 2010


On Mon, May 10, 2010 at 8:14 AM, David L wrote:
> On Fri, May 7, 2010 at 11:47 AM, Adam Williamson  wrote:
>> On Fri, 2010-05-07 at 09:46 -0400, Lyos Gemini Norezel wrote:
>>
>>> When you checked Xorg.0.log... did you happen to notice whether or not
>>> xinerama was enabled?
>>>
>>>  From my (limited) experience with the "free" drivers... I believe
>>> xinerama is "TwinView"s equivalent.
>>
>> Not really, no, that's outdated for most purposes. A nouveau-based
>> system will use RandR. It's _possible_ there's something funky going on
>> with his split cable thing, but I'm not entirely sure. David, can you go
>> to a console, run 'xrandr' and paste the result? Thanks.
>
> My f13 partition stopped booting, so this result is from my
> f12 partition... not sure if that will do you any good:
>
I got f13 booting again... below is the output of xrandr under f13.
It is the same as under f12, except for the lines that start with DVI.
In f13, DVI-I-0 is replaced with DVI-I-1 and DVI-I-1 is replaced with
DVI-I-2.  Also, the x offset of the displays are changed reflecting
the fact that f13 swaps left and right displays on my system relative
to what f12 does.

Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 4096 x 4096
DVI-I-1 connected 1280x1024+0+0 (normal left inverted right x axis y
axis) 376mm x 301mm
   1280x1024      60.0*+   75.0
   1152x864       75.0
   1024x768       75.1     60.0
   800x600        75.0     60.3
   640x480        75.0     60.0
   720x400        70.1
DVI-I-2 connected 1680x1050+1280+0 (normal left inverted right x axis
y axis) 473mm x 296mm
   1680x1050      60.0*+
   1280x1024      75.0     60.0
   1152x864       75.0
   1024x768       75.1     60.0
   800x600        75.0     60.3
   640x480        75.0     60.0
   720x400        70.1

Swapping the cables fixes the problem, but it would be nice if
system-config-display would allow my to do it through software.

Cheers,

              David


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