Re: Problem configure 2560x2048 resolution



On Nov 26, 5:07 am, "Rajko M." <kakomo...@xxxxxxxxxxxx> wrote:
apple3 wrote:
I tried to enter manually the display size. It does not work.
The only possibility is SAX2.When I told "manually" I was looking in the opened SaX2 window.

On the same line where is word Monitor, next right is the model, and on the
right from monitor model is button "Change". When you click on, it will
open new smaller (like popup) window.

Click on middle tab where is written "Display Size".
Now you can see 2 sections.
First is asking for diagonal size and aspect ratio.
Second is asking for
X Axis in mm (this is width of screen) and
Y Axis in mm (this is hight of the screen)
You can use one of them to define size of the screen for monitors that are
not automatically recognized by SaX2. There can be many reasons why SaX2
was not able to talk directly to monitor, and one of cases is when adapter
like yours stands between graphic card (chip) and monitor.

First section is offering standard diagonal sizes like 15", 17", 19" and
standard aspect ratios like 4:3, 16:9. From this data SaX2 will calculate
width and height of the screen.

The second section is below first and it is used to set width and hight of
any screen, even if it is completely out of standard, directly.
When you enter values in this section, SaX2 will ignore first one and
calculate video modes for X server.

Why you should use this section?
The Matrox adapter is switch that splits one video signal to feed two
monitors, like cutting very wide picture in a half to fit it in two
standard frames.
Your video card has to produce picture that is wide as 2 normal pictures and
high as 1 normal picture. That is the reason to double the entry called
X Axis, and leave the same Y Axis.

What you did is probably change in a Display section of /etc/xorg.conf.
That will not work as video modes listed in another section of the same file
are still for normal 17" screen. Xorg server will consider /etc/xorg.conf
as corrupt and exit, leaving you in a text mode.

I have tried to edit /etc/X11/xorg.conf
adding a virtual mode 2560x1024The term "virtual resolution" is something different. You can set virtual
resolution to be bigger than your actual screen. The effect will be the
same like viewing big picture (virtual screen) trough smaller square hole
(actual screen size). You can move the "hole" using mouse and look portions
of the picture, one at the time.

What happens here is that Xorg tells to KDE that the screen is, for instance
21", so KDE makes everything ready for that size. On the other side Xorg
knows that you have 17" and makes picture ready for that size. That makes
possible to have some portions of picture hidden until you move mouse in
that direction and bring it in. This option is not often used today as if
you move mouse to far, window that you are looking at will run off the
screen. Than you have to move mouse back to catch runaway :-)

Problem is that your Matrox switch knows only what goes to screen. It has no
clue about virtual screen. Changing screen size in SaX2, as described
above, will change what Xorg generates as output for monitor. That way your
switch will have expected double width picture.

HTH
--
Regards,
Rajko.
Visithttp://en.opensuse.org/MiniSUSE


Rajko,

I have tried Sax2 X11 Advanced Config with the following parameters:

- Display size : 340x270 => 680x270
- Sax2 automatically channges the diagonal size from 17 => 29
- I keep the same 1280x1024 resolution
=> NOT working

At this point I almost sure that Xfree86 is the problem. The hardware
i845GV seems to support 2560x1024 but Xfree86 does not like it so it
does not output the large picture 2560x1024. As a result Matrox
DualHead2Go outputs two identical 1280x1024.

I will try to prove this point by using WinXP on i845GV

Regards
Apple3

.

Relevant Pages

  • Re: Problem configure 2560x2048 resolution
    ... The only possibility is SAX2.When I told "manually" I was looking in the opened SaX2 window. ... On the same line where is word Monitor, next right is the model, and on the ... like cutting very wide picture in a half to fit it in two ... What happens here is that Xorg tells to KDE that the screen is, ...
    (alt.os.linux.suse)
  • Re: Problem configure 2560x2048 resolution
    ... When I told "manually" I was looking in the opened SaX2 window. ... On the same line where is word Monitor, next right is the model, and on the ... like cutting very wide picture in a half to fit it in two ...
    (alt.os.linux.suse)
  • Re: OT: one huge monitor or 2 smaller or bigger ones ? SOLVED.
    ... Have you tried using a dual monitor setup. ... one display, its better. ... window in one display covering up a window in the other display, ... picture when your using one monitor and tweaking it against the picture ...
    (Fedora)
  • RE: TV picture very poor in MCE
    ... I have the same problem too but I'm using a traditional monitor as opposed to ... the tv picture is somewhat blurry and not that sharp. ... window smaller, the tv picture gets sharper and less blury. ... >> I've downloaded an Intervideo DVD update, but I'm still getting a very fuzzy ...
    (microsoft.public.windows.mediacenter)
  • Re: CRT Monitor Odd Behavior
    ... a window I see the picture expand or if I open a window I see the picture ... I just set my monitor to 100hz, the setting I used to keep it at. ... mostly black picture the desktop streches beyond the edges of the screen and ...
    (sci.electronics.repair)