Resoluçao de video [RESOLVIDO]

Passa a resolução correta do seu monitor: basta acrescentar em: Modes "800x600" "1024x768"
crie um arquivo chamado xorg.conf cole os dados abaixo, e mova-o para /etc/X11/

# /etc/X11/xorg.conf (xorg 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 /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/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 "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "abnt2"
Option "XkbLayout" "br"
Option "XkbVariant" "abnt2"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
EndSection

Section "Device"
Identifier "Placa de Vídeo Genérica"
Driver "vesa"
BusID "PCI:1:0:0"
EndSection

Section "Monitor"
Identifier "Monitor Genérico"
Option "DPMS"
HorizSync 28-64
VertRefresh 43-60
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Placa de Vídeo Genérica"
Monitor "Monitor Genérico"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "800x600" "1024x768"
EndSubSection
SubSection "Display"
Depth 4
Modes "800x600" "1024x768"
EndSubSection
SubSection "Display"
Depth 8
Modes "800x600" "1024x768"
EndSubSection
SubSection "Display"
Depth 15
Modes "800x600" "1024x768"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600" "1024x768"
EndSubSection
SubSection "Display"
Depth 24
Modes "800x600" "1024x768"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection