There should be zero difference between Xfce and MATE regarding this. This issue is related to the current version of the xorg drivers not detecting
your particular monitor's maximum setting. Below, we're going to work through steps to try to remedy that. Work through the steps only until they ask you to stop.
Run in a terminal:
Code:
xrandr --output VGA1 --mode 1440x900
Does the desired display appear?
If so, STOP, go no further, and let me know.Run in a terminal:
Code:
xrandr --addmode VGA1 --mode 1440x900
xrandr --output VGA1 --mode 1440x900
Does the desired display appear?
If so, STOP, go no further, and let me know.Read this section all of the way through and make sure you understand what it is asking before taking any of the steps in it.
Run in a terminal:
Code:
cvt 1440 900 60
When you do so, there will be output similar to
Code:
Modeline "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync
Take the info after
Modeline and in a text editor form a new xrandr command; for example:
Code:
xrandr --newmode "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync
Again regarding the above line, ensure you have substituted the results
from your own machine's output from running
cvt, not the line
as shown.
Now, copy the command you made from your text editor and run it in a terminal.
Now run:
Code:
xrandr --addmode VGA1 --mode 1440x900
xrandr --output VGA1 --mode 1440x900
Does the desired display appear now?