nvidia - ThinkPad t420s

http://www.nvidia.co.jp/Download/indexsg.aspx?lang=jp
からドライバーを入手

sudo lightdm
でX Serverを終了

入手したドライバーをインストール

再起動後
nvidia-setting で設定

/etc/X11/xorg.conf
今はこれでうまくいっているような？
エラーも出るけど

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 295.20 (buildmeister@swio-display-x86-rhel47-01.nvidia.com) Mon Feb 6 21:30:26 PST 2012

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 295.20 (buildmeister@swio-display-x86-rhel47-01.nvidia.com) Mon Feb 6 21:30:07 PST 2012

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "LGD"
HorizSync 30.0 - 75.0
VertRefresh 60.0
Option "DPMS"
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "Mitsubishi RDT233WLM"
HorizSync 31.0 - 82.0
VertRefresh 56.0 - 76.0
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "NVS 4200M"
EndSection

Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "NVS 4200M"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "Screen"

# Removed Option "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: nvidia-auto-select +1600+0"
# Removed Option "TwinView" "1"
# Removed Option "metamodes" "DFP-0: 1600x900 +0+0, DFP-1: 1920x1080 +1600+0"
# Removed Option "TwinView" "0"
# Removed Option "metamodes" "DFP-0: 1600x900 +0+0"
# Removed Option "TwinView" "1"
# Removed Option "TwinView" "0"
# Removed Option "metamodes" "DFP-0: 1600x900 +0+0"
# Removed Option "metamodes" "DFP-0: 1600x900 +0+0, DFP-1: nvidia-auto-select +1600+0"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "1"
Option "TwinViewXineramaInfoOrder" "DFP-0"
Option "metamodes" "DFP-0: 1600x900 +0+0, DFP-1: 1920x1080 +1600+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"

# Removed Option "metamodes" "DFP-1: 1920x1080 +1600+0"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "DFP-1: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

あと
.profileに
xrandr --newmode 1600x900_50.00 97.04 1600 1680 1848 2096 900 901 904 926 -HSync +Vsync
xrandr --addmode default 1600x900_50.00