problema con resolucion pantalla ubuntu

[informaticadiaz]

/etc/X11/xorg.con

Código:

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
#   sudo dpkg-reconfigure -phigh xserver-xorg
Section "InputDevice"
    Identifier    "Generic Keyboard"
    Driver        "kbd"
    Option        "XkbRules"    "xorg"
    Option        "XkbModel"    "pc105"
    Option        "XkbLayout"    "latam"
    Option        "XkbOptions"    "lv3:ralt_switch"
EndSection

Section "InputDevice"
    Identifier    "Configured Mouse"
    Driver        "mouse"
EndSection

Section "Device"
    Identifier    "Configured Video Device"
    Boardname    "vesa"
    Busid        "PCI:1:0:0"
    Driver        "vesa"
    Screen    0
EndSection

Section "Monitor"
    Identifier    "Configured Monitor"
    Vendorname    "Samsung"
    Modelname    "Samsung SyncMaster 793S/793V/CM173G"
    Horizsync    30-71
    Vertrefresh    50-160
  modeline  "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
  modeline  "640x480@72" 31.5 640 664 704 832 480 489 491 520 -vsync -hsync
  modeline  "640x480@75" 31.5 640 656 720 840 480 481 484 500 -vsync -hsync
  modeline  "640x480@85" 36.0 640 696 752 832 480 481 484 509 -vsync -hsync
  modeline  "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
  modeline  "800x600@72" 50.0 800 856 976 1040 600 637 643 666 +hsync +vsync
  modeline  "800x600@75" 49.5 800 816 896 1056 600 601 604 625 +hsync +vsync
  modeline  "800x600@85" 56.3 800 832 896 1048 600 601 604 631 +hsync +vsync
  modeline  "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
  modeline  "832x624@75" 57.284 832 864 928 1152 624 625 628 667 -vsync -hsync
  modeline  "1024x768@85" 94.5 1024 1072 1168 1376 768 769 772 808 +hsync +vsync
  modeline  "1024x768@75" 78.8 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
  modeline  "1024x768@70" 75.0 1024 1048 1184 1328 768 771 777 806 -vsync -hsync
  modeline  "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
  modeline  "1024x768@43" 44.9 1024 1032 1208 1264 768 768 776 817 +hsync interlace +vsync
  modeline  "1152x864@75" 108.0 1152 1216 1344 1600 864 865 868 900 +hsync +vsync
  modeline  "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
  modeline  "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
  modeline  "1400x1050@60" 122.61 1400 1488 1640 1880 1050 1051 1054 1087 -hsync +vsync
    Gamma    1.0
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Device        "Configured Video Device"
    Monitor        "Configured Monitor"
    Defaultdepth    24
    SubSection "Display"
        Depth    24
        Virtual    1400    1050
        Modes        "1024x768@43"    "1152x864@75"    "1024x768@60"    "1280x960@60"    "1024x768@70"    "1280x1024@60"    "1024x768@75"    "1400x1050@60"    "1024x768@85"    "832x624@75"    "800x600@60"    "800x600@85"    "800x600@75"    "800x600@72"    "800x600@56"    "640x480@85"    "640x480@75"    "640x480@72"    "640x480@60"
    EndSubSection
EndSection

Section "ServerLayout"
    Identifier    "Default Layout"
  screen 0 "Default Screen" 0 0
EndSection
Section "Module"
    Load        "glx"
    Load        "GLcore"
    Load        "v4l"
EndSection
Section "ServerFlags"
EndSection