Salix Forums

I have tried to modify the xorg.conf-vesa in order to get a bigger virtual display to fit my dual display installation as the actual display size does not accomodate my laptop and stand alone display:

one[~]$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 2048 x 2048
VGA connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
1920x1080 60.0*+
1680x1050 60.0
1600x900 60.0
1280x1024 75.0 60.0
1280x960 60.0
1152x864 75.0
1280x720 60.0
1152x720 60.0
1024x768 75.0 60.0
832x624 74.6
800x600 75.0 60.3
640x480 75.0 59.9
720x400 70.1
LVDS connected (normal left inverted right x axis y axis)
1280x768 60.0 +
1024x768 85.0 75.0 70.1 60.0
832x624 74.6
800x600 85.1 72.2 75.0 60.3 56.2
640x480 85.0 72.8 75.0 59.9
720x400 85.0
640x400 85.1
640x350 85.1
TV disconnected (normal left inverted right x axis y axis)



one[~]$ xrandr --output LVDS --mode 1280x768 --output VGA --mode 1920x1080 --right-of LVDS
xrandr: screen cannot be larger than 2048x2048 (desired size 3200x1080)
one[~]$

Here is the modification of the xorg.conf-vesa file:

Section "Screen"
Identifier "Screen 1"
Device "VESA Framebuffer"
Monitor "My Monitor"

# If your card can handle it, a higher default color depth (like 24 or 32)
# is highly recommended.

# DefaultDepth 8
# DefaultDepth 16
DefaultDepth 24
# DefaultDepth 32

# "1024x768" is also a conservative usable default resolution. If you
# have a better monitor, feel free to try resolutions such as
# "1152x864", "1280x1024", "1600x1200", and "1800x1400" (or whatever your
# card/monitor can produce)



This part:

SubSection "Display"
Viewport 0 0
Depth 4
# Here you can set virtual screen size:
Virtual 3200 2720
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
# Here you can set virtual screen size:
Virtual 3200 2720
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
# Here you can set virtual screen size:
Virtual 3200 2720
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
# Here you can set virtual screen size:
Virtual 3200 2720
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
# Here you can set virtual screen size:
Virtual 3200 2720
EndSubSection



Replaced the following one with no effect at all on the virtual size of the display:

# Subsection "Display"
# Depth 8
# Modes "1024x768" "800x600" "640x480"
# EndSubsection
# Subsection "Display"
# Depth 16
# Modes "1024x768" "800x600" "640x480"
# EndSubsection
# Subsection "Display"
# Depth 24
# Modes "1024x768" "800x600" "640x480"
# EndSubsection
# Subsection "Display"
# Depth 32
# Modes "1024x768" "800x600" "640x480"
# EndSubsection

What is there to do?

xorg.conf-vesa is only a sample configuration file.

If you want it to be used by xorg, you must rename it to xorg.conf

Xorg will not boot. The syntax I did used is not right.

What could be wrong in the modifications here above posted?

Your answer is in here: http://www.thinkwiki.org/wiki/Xorg_RandR_1.2

Thanks a lot. This link is new to me. I will see if I can do better with that information in hand. All I got already was:

http://www.slax.org/forum.php?action=vi ... ostid37734

I think lxrand is very useful and it should be on Salix-lxde cdrom.