# ThinkPad T30 power-optimization
# thinkwiki.com & al.
# this document lisensed as public domain under The MIT License.


### PowerSaving on Thinkpad T30, by Esa Häkkinen 2007-10-14. Public Domain.
#
echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
echo 5 > /proc/sys/vm/laptop_mode
echo 0 > /proc/sys/kernel/nmi_watchdog
hdparm -B 1 -S 12 /dev/sda  
iwpriv eth1 set_power 5         # Intel PRO/Wireless 2200BG miniPCI
ethtool -s eth0 wol d           # Wake On Lan disabled
ethtool -K eth0 gso on          # Generic Offload Engine enabled
ethtool -s eth0 speed 100 duplex full autoneg off
# underclocking Radeon 7500:
#  - apt-get install rovtool
rovtool -c 100 -m 120   # DVI off
rovtool -c 100 -m 180   # DVI in use
echo crt_disable > /proc/acpi/ibm/video
echo dvi_disable > /proc/acpi/ibm/video
###




* xorg.conf:

Section "Device"
        Identifier      "ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]"
        Driver          "radeon"
        BusID           "PCI:1:0:0"
        Option          "RenderAccel" "on"
        Option          "EnablePageFlip" "on"
        Option          "DynamicClocks" "on"    ### powersaving enabled. Unstable.
        Option          "BIOSHotKeys" "on"
        Option          "MergedFB" "on"
        Option          "CRT2Position" "RightOf"
        Option          "CRT2Hsync" "60"
        Option          "CRT2VRefresh" "30-82"
        Option          "MonitorLayout" "LVDS, CRT"
        Option          "MetaModes" "1024x768-1280x1024"
        Option          "MergedNonRectangular" "true"
        Option          "AGPMode" "4"
        Option          "AGPFastWrite" "yes"
        Option          "OverlayOnCRT1" "on"    ### overlay on display 1.
        Option          "OverlayOnCRT2" "on"    ### overlay on display 2.
EndSection

Section "Monitor"
        Identifier      "InternalLCD"
        Option          "DPMS"
EndSection
Section "Screen"
        Identifier      "Default Screen"
        Device          "ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]"
        Monitor         "InternalLCD"
        DefaultDepth    24
        SubSection "Display"
                Depth           24
                Modes           "1024x768" "1280x1024"
        EndSubSection
#       SubSection "Display"
#               Depth           24
#               Virtual         2304 1024
#       EndSubSection
EndSection