Наверное не многим из Вас уважаемые пользователи приходилось в линукс изменять ориентацию экрана на своих мониторах. Да, в виндоус это сделать можно буквально в два клика. Надо думать что и в линукс это так же возможно, но не в пару кликов а в правке пары строк файлов конфигурации.

Для того того чтобы можно было поворачивать экран проделываем следующее.
Командой $ xrandr необходимо в /etc/x11/xorg.conf
в секции "Device" добавить:
Option "RandRRotation" "on"
Если же понадобилось чтобы иксы загружались уже развернутыми как то вам и требуется, то вместо
предыдущей строки необходимо вписать:
Option "Rotate" "inverted" в моём случае это 180 градусов (inverted)
вот пример настройки (рабочий) xorg.conf:


# /.../
# SaX generated X11 config file
# Created on: 2008-09-06T19:36:05+0300.
#
# Version: 8.1
# Contact: Marcus Schaefer , 2005
# Contact: SaX-User list <https://lists.berlios.de/mailman/listinfo/sax-users>
#
# Automatically generated by [ISaX] (8.1)
# PLEASE DO NOT EDIT THIS FILE!
#

Section "Files"
FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/local"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/URW"
FontPath "/usr/share/fonts/Speedo"
FontPath "/usr/share/fonts/PEX"
FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/share/fonts/latin2/misc:unscaled"
FontPath "/usr/share/fonts/latin2/75dpi:unscaled"
FontPath "/usr/share/fonts/latin2/100dpi:unscaled"
FontPath "/usr/share/fonts/latin2/Type1"
FontPath "/usr/share/fonts/latin7/75dpi:unscaled"
FontPath "/usr/share/fonts/baekmuk:unscaled"
FontPath "/usr/share/fonts/japanese:unscaled"
FontPath "/usr/share/fonts/kwintv"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/uni:unscaled"
FontPath "/usr/share/fonts/CID"
FontPath "/usr/share/fonts/ucs/misc:unscaled"
FontPath "/usr/share/fonts/ucs/75dpi:unscaled"
FontPath "/usr/share/fonts/ucs/100dpi:unscaled"
FontPath "/usr/share/fonts/hellas/misc:unscaled"
FontPath "/usr/share/fonts/hellas/75dpi:unscaled"
FontPath "/usr/share/fonts/hellas/100dpi:unscaled"
FontPath "/usr/share/fonts/hellas/Type1"
FontPath "/usr/share/fonts/misc/sgi:unscaled"
FontPath "/usr/share/fonts/xtest"
FontPath "/opt/kde3/share/fonts"
InputDevices "/dev/gpmdata"
InputDevices "/dev/input/mice"
EndSection

Section "ServerFlags"
Option "AllowMouseOpenFail" "on"
Option "ZapWarning" "on"
EndSection

Section "Module"
Load "glx"
Load "type1"
Load "extmod"
Load "dbe"
Load "freetype"
EndSection

Section "InputDevice"
Driver "kbd"
Identifier "Keyboard[0]"
Option "Protocol" "Standard"
Option "XkbLayout" "us,ru"
Option "XkbModel" "microsoftpro"
Option "XkbOptions" "grp:ctrl_shift_toggle,grp_led:scroll"
Option "XkbRules" "xfree86"
Option "XkbVariant" ",winkeys"
EndSection


Section "InputDevice"
Driver "mouse"
Identifier "Mouse[1]"
Option "Buttons" "5"
Option "Device" "/dev/input/mice"
Option "Name" "ImPS/2 Generic Wheel Mouse"
Option "Protocol" "explorerps/2"
Option "Vendor" "Sysp"
Option "ZAxisMapping" "4 5"
EndSection


Section "Monitor"
Option "CalcAlgorithm" "XServerPool"
DisplaySize 386 290
HorizSync 30-81
Identifier "Monitor[0]"
ModelName "SYNCMASTER 931C (DIGITAL)"
Option "DPMS"
Option "PreferredMode" "1280x1024"
VendorName "SAMSUNG"
VertRefresh 56-75
UseModes "Modes[0]"
EndSection


Section "Modes"
Identifier "Modes[0]"
EndSection


Section "Screen"
DefaultDepth 24
SubSection "Display"
Depth 15
Modes "1280x1024" "1280x960" "1280x800" "1152x864" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024" "1280x960" "1280x800" "1152x864" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1280x960" "1280x800" "1152x864" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024" "1280x960" "1280x800" "1152x864" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
Device "Device[0]"
Identifier "Screen[0]"
Monitor "Monitor[0]"
EndSection


Section "Device"
BoardName "GeForce 8500 GT"
BusID "3:0:0"
Driver "nvidia"
Identifier "Device[0]"
Screen 0
# Option "RandRRotation" "on"
Option "Rotate" "Inverted"
VendorName "NVidia"
EndSection



Section "ServerLayout"
Identifier "Layout[all]"
InputDevice "Keyboard[0]" "CoreKeyboard"
InputDevice "Mouse[1]" "CorePointer"
Option "Clone" "off"
Option "Xinerama" "off"
Screen "Screen[0]"
EndSection


Section "DRI"
Group "video"
Mode 0660
EndSection

Section "Extensions"
Option "Composite" "on"
EndSection

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