Resolution 700x525 on RV350

[Alex Deucher]

On Thu, Jun 5, 2008 at 7:52 PM, Torquil Macdonald Sørensen
<t.m.sorensen at matnat.uio.no> wrote:
> 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.

kcontrol probably isn't randr 1.2 compliant yet as well.

Alex