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Re: x301 linux vga resolution

 

Aha, I have it!

It is all in the modeline params; the following works reasonably well:

"1280x1024" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync

Thanks for pointing me in the right direction

J


On Sat, Mar 7, 2009 at 11:47 AM, Jon Vaughan <jsvaughan@xxxxxxxxx> wrote:

> Ok I have made some progress (although not quite there yet)
>
> The monitor is a Dell 1907FP and I have attached the log file.
>
> When I did the "xrandr --newmode" yesterday I didn't know how how to work
> out the params, so I used a line I found on the web, and it seems there must
> have been something wrong with it.
>
> I know now that the answer is to use cvt to get the props.  So now I have
> done:
>
> cvt 1280 1024 60
> xrandr --newmode  "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027
> 1034 1063 -hsync +vsync
> xrandr --addmode VGA "1280x1024_60.00"
> xrandr --output VGA --mode 1280x1024_60.00
>
> then used the "configure display settings tool" to explain that I don't
> want a mirrored display, I want one to the right of the other etc.
>
> The problem I now have is that although the VGA display is in 1280x1024 it
> ISN'T correctly horizontally aligned - about 20% of the image is off the
> left of the screen (too much to be compensated for with the monitor
> controls).  This is not because of an overlap though, as you can see from
> xrandr.
>
> xrandr:
>
> Screen 0: minimum 320 x 200, current 2720 x 1024, maximum 3080 x 1900
> VGA connected 1280x1024+1440+0 (normal left inverted right x axis y axis)
> 0mm x 0mm
>    1360x768       59.8
>    1152x864       60.0
>    1024x768       60.0
>    800x600        60.3
>    640x480        59.9
>    1280x1024_60.00   59.9*
> LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis)
> 287mm x 180mm
>    1440x900       60.0*+   59.9     50.0
>    1360x768       59.8
>    1152x864       60.0
>    1024x768       60.0
>    800x600        60.3     56.2
>    640x480        59.9
> HDMI-1 disconnected (normal left inverted right x axis y axis)
>
> So now I am trying to work out the cvt params to see if there is a way of
> sorting it out.  Let me know if you've got any thoughts!
>
>


-- 
Jonathan Vaughan
Bionic Books
http://www.bionicbooks.com
+44 (0) 7790 742929


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