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Re: Virtual resolution for desktop



Camaleón <noelamac@gmail.com> writes:

>> Is there some way to get a `Virtual' resolution using whatever
>> techniques are now employed to generate our desktops?
>
> Yes, I would try to set it with xrandr:
>
> http://wiki.debian.org/XStrikeForce/HowToRandR12

some (alot) of that is pretty confusing to me.

It seems to say running `xrandr' by itself will show the current mode.
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 4096 x 4096
VGA-1 disconnected (normal left inverted right x axis y axis)
DVI-I-1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 550mm x 340mm
   1280x1024      75.0     60.0  
   1440x900       59.9* 
   1280x960       60.0  
   1152x864       75.0  
   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  
TV-1 disconnected (normal left inverted right x axis y axis)

so for me its 1440x900

so trying this:

sudo xrandr --output DVI-I-1 --mode 1440x900 --fb 2048x1536 \
    --panning 2048x1536

And Yup, it worked. Only problem is that its barely any difference.
The monitor is a 25in with resolution of 1900x1280 so I gues 2048x1536
isn't enough bigger to be very noticable.

The panning is about 1/8 inch or less.

So I tried bigger: 
sudo xrandr --output DVI-I-1 --mode 1440x900 --fb 4096x2700 --panning 4096x2700

Still no panning.

The cited url goes on and on about piles of stuff, but does not seem
to discuss what I'm trying to do.

I thought maybe the panning number has to be bigger than the fb
setting.  But the few combos I tried failed:

 sudo xrandr --output DVI-I-1 --mode 1440x900 --fb 2880x1800 --panning 4096x2700
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  150 (RANDR)
  Minor opcode of failed request:  29 (RRSetPanning)
  Serial number of failed request:  30
  Current serial number in output stream:  30

I'm not getting heads or tails from the web page... can you take an
educated guess what might work to give me a fair bit of panning room?


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