Resolution 700x525 on RV350

[Torquil Macdonald Sørensen]

On Friday 06 June 2008 01:41:21 Alex Deucher wrote:
> On Thu, Jun 5, 2008 at 7:16 PM, Torquil Macdonald Sørensen
>
> <torquil at gmail.com> wrote:
> > Hello, I have a laptop with a 1400x1050 screen, and would like to be able
> > to use it at half of the resolution, i.e. 700x525, because that would
> > look better than e.g. 640x480 and 800x600, since it is eactly half of the
> > physical resolution of the screen. It is an IBM T42 with an ATI Radeon
> > Mobility 9600 card. I have added 700x525 to the Modes-line in the Display
> > subsection of the Screen section in xorg.conf:
> >
> > ***********************
> > Section "Screen"
> > .
> > SubSection "Display"
> > .
> > Modes "1400x1050" "1280x1024" "1280x960" "1024x768" "800x600" "700x525"
> > "640x480" **************************
> >
> > In /var/log/Xorg.0.log it says:
> >
> > *******************************************************
> > (II) RADEON(0): Added native panel mode: 1400x1050
> > (II) RADEON(0): Adding Screen mode: 1280x1024
> > (II) RADEON(0): Adding Screen mode: 1280x960
> > (II) RADEON(0): Adding Screen mode: 1024x768
> > (II) RADEON(0): Adding Screen mode: 800x600
> > (II) RADEON(0): Adding Screen mode: 700x525
> > (II) RADEON(0): Adding Screen mode: 640x480
> > (II) RADEON(0): Total number of valid Screen mode(s) added: 6
> > *****************************************************************
> >
> > The output from xrandr is:
> >
> > *************************************************************************
> >* Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 1400 x 1200
> > VGA-0 disconnected (normal left inverted right x axis y axis)
> > DVI-0 disconnected (normal left inverted right x axis y axis)
> > LVDS connected 1400x1050+0+0 (normal left inverted right x axis y axis)
> > 0mm x 0mm
> >   1400x1050      60.2*+
> >   1280x1024      59.9
> >   1280x960       59.9
> >   1280x800       60.0
> >   1280x768       60.0
> >   1024x768       60.0     59.9
> >   800x600        60.3     59.9
> >   700x525        59.8
> >   640x480        59.9     59.4
> > S-video disconnected (normal left inverted right x axis y axis)
> > ******************************************************************
> >
> > However, "xrandr -s 700x525" results in:
> >
> > *************
> > Size 700x525 not found in available modes
> > *************
> >
> > How come xrandr is saying that it is not an "available mode", when it is
> > on the list? Is it impossible to get a 700x525 resolution?
>
> xrandr -s is xrandr 1.0 API. It has no concept of multiple outputs.
> Since the radeon driver is xrandr 1.2 compliant, it's a better idea to
> use the 1.2 API:
> xrandr --output LVDS --mode 700x525
>
> Alex


Thanks, that worked! Now I just have to find out why that display mode is not 
on the list of display resolutions in kcontrol, but that is another matter.

Best regards
Torquil Sørensen