Setting the screen resolution

[Andrew S.]

Hi Vince,

Thank you for your email. I found the "xorg.conf" file but I am not
sure how to edit it, or what to edit (I am new to the world of Linux).
Can you tell me what changes I need to make and how to make them to
resolve my problem?

Here is what the "xorg.conf" file looks like:

File: /etc/X11/xorg.conf
Page 1 of 1
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg
Section "InputDevice"
Identifier
"Generic Keyboard"
Driver
"kbd"
Option
"XkbRules"
"xorg"
Option
"XkbModel"
"pc105"
Option
"XkbLayout"
"us"
EndSection
Section "InputDevice"
Identifier
"Configured Mouse"
Driver
"mouse"
Option
"CorePointer"
EndSection
Section "Device"
Identifier
"Configured Video Device"
EndSection
Section "Monitor"
Identifier
"Configured Monitor"
EndSection
Section "Screen"
Identifier
"Default Screen"
Monitor
"Configured Monitor"
Device
"Configured Video Device"
EndSection
Section "ServerLayout"
Identifier
"Default Layout"
Screen
"Default Screen"

On Sat, Apr 26, 2008 at 3:43 AM, Vincent Trouilliez
<vincent.trouilliez at modulonet.fr> wrote:
>
> > I recently installed Ubuntu 8.04 on my virtual machine (I am using
>  > VirtualBox as my virtual machine) and I can't change the screen
>  > resolution. When I try to change it, the only two options I get are
>  > 800x600 and 640x480. I want o increase the resolution. Is this a
>  > problem with Ubuntu or with my virtual machine? How do I get Ubuntu to
>  > use the host OS video card?
>
>  Hi there,
>
>  I had the same "problem" too.
>  The problem was that the guest machine was using incorrect refresh
>  rates, probably because it was using default/failsafe/conservative
>  settings, or virtualbox was emulating a substandard monitor, do'nt know.
>
>  Cure: simply edit /etc/X11/xorg.conf in the Ubuntu virtual machine, so
>  as to explicitely specify the correct refresh rates for your monitor.
>
>
>  HTH
>
>  --
>  Vince
>
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