Forum Debian Users Gang

ls /etc/pm/power.d/
brightness  laptop-mode  pci_devices  sata_alpm

cat /etc/pm/power.d/brightness
#!/bin/bash

case $1 in
    true)
    echo 5 > /sys/class/backlight/acpi_video0/brightness
    ;;
    false)
    echo 12 > /sys/class/backlight/acpi_video0/brightness
    ;;
esac

cat /etc/pm/power.d/laptop-mode
#!/bin/sh

. "${PM_FUNCTIONS}"

VM="/proc/sys/vm"
vmfiles="laptop_mode dirty_ratio dirty_background_ratio 
         dirty_writeback_centisecs"

LAPTOP_MODE=${LAPTOP_MODE:-5}
LAPTOP_DIRTY_RATIO=${LAPTOP_DIRTY_RATIO:-90}
LAPTOP_DIRTY_BG_RATIO=${LAPTOP_DIRTY_BG_RATIO:-1}
LAPTOP_DIRTY_WRITEBACK=${LAPTOP_DIRTY_WRITEBACK:-60000}

help() {
    cat <<EOF
--------
$0: Laptop mode tuning parameters.
This hook controls how agressive the system is at trying to avoid
writing to disk.  The longer the disk is idle, the more power you can save.

This hook is only active on battery power, and it restores these values
to kernel defaults when on AC power.

It has 4 tuneable parameters: 
LAPTOP_MODE = value for laptop_mode on battery.
Defaults to 5, which enables laptop mode and forces the system to wait 
5 seconds whenever something asks to write to disk to flush out as much
data as we can.

LAPTOP_DIRTY_RATIO = the ratio of dirty memory to all memory that 
processes start doing their own writeout.  
Defaults to 60, which means that the kernel will not start forcing process
to write out file information that has been changed but not saved until 60%
of usable system memory is filled with dirty information.

LAPTOP_DIRTY_BG_RATIO = The ratio of dirty memory to all memory that 
pdflush will wake up and start writing to disk.  
Defaults to 40, which means that the kernel will wake up a helper process
to try and write out dirty memory once 40% of usable system memory is dirty.

LAPTOP_DIRTY_WRITEBACK = The number of centiseconds between periodic
wakeups of the pdflush daemons.  
Defaults to 60000 (10 minutes), which menas that the kernel will flush dirty
memory every 10 minutes if dirty memory never hits 40% of system memory.

EOF
}

[ -w $VM/laptop_mode -a -w $VM/dirty_ratio ] || exit $NA

read_values() {
    for f in $vmfiles; do
    [ -r "$VM/$f" ] && cat "$VM/$f" || echo 0
    done
}

write_values() {
    for f in $vmfiles; do
    [ -w "$VM/$f" ] && echo $1 > "$VM/$f"
    shift
    done
}

laptop_mode_ac() {
    # disable laptop mode, set vm parameters back to sane defaults
    if state_exists laptop_mode_default; then
    write_values $(restorestate laptop_mode_default)
    else
    write_values 0 10 5 500
    fi    
    echo "Laptop mode disabled."
}

laptop_mode_battery() {
    # enable laptop mode, set vm parameters to buffer as many writes as 
    # possible.
    state_exists laptop_mode_default || \
    read_values | savestate laptop_mode_default
    write_values "$LAPTOP_MODE" "$LAPTOP_DIRTY_RATIO" \
    "$LAPTOP_DIRTY_BG_RATIO" "$LAPTOP_DIRTY_WRITEBACK"
    echo "Laptop mode enabled."
}

case $1 in
    true) laptop_mode_battery ;;
    false) laptop_mode_ac ;;
    help) help;;
    *) exit $NA ;;
esac

exit 0

cat /etc/pm/power.d/pci_devices
#!/bin/sh

#
# This script adjusts the power control of a set of PCI devices that
# prove beneficial to enable power savings
#

PCI_DEVICES_PM_ENABLE="${PCI_DEVICES_PM_ENABLE:-true}"
buslist="pci spi i2c"
set_pci_device()
{
    for dev in /sys/bus/pci/devices/* ; do
        if [ -e $dev/class -a -e $dev/power/control ]; then
            id=`basename $dev`
            case `cat $dev/class` in
            0x020000) # ethernet
                echo "Setting Ethernet device $id to $1"
                echo $1 > $dev/power/control
                ;;
            0x028000) # wireless
                echo "Setting Wireless device $id to $1"
                echo $1 > $dev/power/control
                ;;
            0x040300) # audio
                echo "Setting Audio device $id to $1"
                echo $1 > $dev/power/control
                ;;
            0x060000) # host bridge
                echo "Setting Host Bridge $id to $1"
                echo $1 > $dev/power/control
                ;;
            0x080500) # SD card reader
                echo "Setting SD card reader device $id to $1"
                echo $1 > $dev/power/control
                ;;
            0x088000|0x088001) # card reader
                echo "Setting card reader device $id to $1"
                echo $1 > $dev/power/control
                ;;
            0x0c0000|0x0c0010) # firewire
                echo "Setting FireWire device $id to $1"
                echo $1 > $dev/power/control
                ;;
            esac
        fi
    done
}

case "$1" in
    true) # powersaving on
        [ "$PCI_DEVICES_PM_ENABLE" = true ] && set_pci_device "auto"
                for bus in $buslist; do
                    for i in /sys/bus/$bus/devices/*/power/control; do
                        echo auto > $i
                    done
                done
        ;;
    false) # powersaving off
        [ "$PCI_DEVICES_PM_ENABLE" = true ] && set_pci_device "on"
                for bus in $buslist; do
                    for i in /sys/bus/$bus/devices/*/power/control; do
                        echo on > $i
                    done
                done
        ;;
    *)
        exit 254
        ;;
esac

exit 0

cat /etc/pm/power.d/sata_alpm
#!/bin/sh

. "${PM_FUNCTIONS}"

SATA_ALPM_ENABLE=${SATA_ALPM_ENABLE:-false}

help() {
cat <<EOF
$0: SATA link power management

This hook tries to save power by allowing SATA controllers to
reduce power usage when the SATA subsystem is otherwise idle.

This adds a little bit of latency to drive accesses in
exchange for moderate power savings if you are not using the drive.

This hook has 1 parameter:
SATA_ALPM_ENABLE = whether to use SATA ALPM on battery.
Defaults to "false".

EOF
}

set_sata_alpm() {
    # see kernel commit 6013efd8860bf15c1f86f365332642cfe557152f
    kv="$(uname -r)"
    [ "$kv" ] || exit $NA  #for paranoia's sake
    [ "${kv%-*}" \< "2.6.33" ] && exit $NA  # avoid fs corruption
    for f in /sys/class/scsi_host/host*; do
    [ -w "$f/link_power_management_policy" ] || continue
    printf "Setting SATA ALPM on %s to %s..." "${f##*/}" "$1"
    echo "$1" > "$f/link_power_management_policy" && echo Done. || \
        echo Failed.
    done
}

case $1 in
    true) [ "$SATA_ALPM_ENABLE" = true ] && set_sata_alpm min_power
    echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
    echo min_power > /sys/class/scsi_host/host1/link_power_management_policy
    ;;
    false) set_sata_alpm max_performance
    echo max_performance > /sys/class/scsi_host/host0/link_power_management_policy
    echo max_performance > /sys/class/scsi_host/host1/link_power_management_policy
    ;;
    help) help;;
    *) exit $NA;;
esac

exit 0

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 304.88  (pbuilder@cake)  Sat May  4 17:14:27 UTC 2013

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

Section "Files"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    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      "Unknown"
    HorizSync       28.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
     
Depth       24
   
EndSection

    44.189]
X.Org X Server 1.12.4
Release Date: 2012-08-27
[    44.189] X Protocol Version 11, Revision 0
[    44.189] Build Operating System: Linux 3.2.0-4-amd64 x86_64 Debian
[    44.189] Current Operating System: Linux Lenovo 3.10-9.slh.2-aptosid-amd64 #1 SMP PREEMPT Sun Aug 25 11:41:57 UTC 2013 x86_64
[    44.189] Kernel command line: BOOT_IMAGE=/vmlinuz-3.10-9.slh.2-aptosid-amd64 root=UUID=743b3676-2426-4a63-9b81-07658f1803a1 ro quiet
[    44.189] Build Date: 17 April 2013  10:22:47AM
[    44.189] xorg-server 2:1.12.4-6 (Julien Cristau <jcristau@debian.org>)
[    44.189] Current version of pixman: 0.30.2
[    44.189]    Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
[    44.189] Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    44.189] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Aug 27 01:07:45 2013
[    44.190] (==) Using config file: "/etc/X11/xorg.conf"
[    44.190] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    44.190] (==) ServerLayout "Layout0"
[    44.190] (**) |-->Screen "Screen0" (0)
[    44.190] (**) |   |-->Monitor "Monitor0"
[    44.190] (**) |   |-->Device "Device0"
[    44.190] (**) |-->Input Device "Keyboard0"
[    44.190] (**) |-->Input Device "Mouse0"
[    44.190] (==) Automatically adding devices
[    44.190] (==) Automatically enabling devices
[    44.190] (WW) The directory "/usr/share/fonts/X11/misc" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/usr/share/fonts/X11/Type1" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (WW) The directory "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" does not exist.
[    44.190]    Entry deleted from font path.
[    44.190] (==) FontPath set to:
        built-ins
[    44.190] (==) ModulePath set to "/usr/lib/xorg/modules"
[    44.190] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[    44.190] (WW) Disabling Keyboard0
[    44.190] (WW) Disabling Mouse0
[    44.190] (II) Loader magic: 0x7f5d5ff72ae0
[    44.190] (II) Module ABI versions:
[    44.190]    X.Org ANSI C Emulation: 0.4
[    44.190]    X.Org Video Driver: 12.1
[    44.190]    X.Org XInput driver : 16.0
[    44.190]    X.Org Server Extension : 6.0
[    44.191] (--) PCI:*(0:0:2:0) 8086:0166:17aa:3977 rev 9, Mem @ 0xd3000000/4194304, 0xe0000000/268435456, I/O @ 0x00004000/64
[    44.191] (--) PCI: (0:1:0:0) 10de:0fd4:17aa:3977 rev 161, Mem @ 0xd2000000/16777216, 0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x00003000/128
[    44.191] (II) Open ACPI successful (/var/run/acpid.socket)
[    44.191] (II) LoadModule: "extmod"
[    44.192] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
[    44.192] (II) Module extmod: vendor="X.Org Foundation"
[    44.192]    compiled for 1.12.4, module version = 1.0.0
[    44.192]    Module class: X.Org Server Extension
[    44.192]    ABI class: X.Org Server Extension, version 6.0
[    44.192] (II) Loading extension SELinux
[    44.192] (II) Loading extension MIT-SCREEN-SAVER
[    44.192] (II) Loading extension XFree86-VidModeExtension
[    44.192] (II) Loading extension XFree86-DGA
[    44.192] (II) Loading extension DPMS
[    44.192] (II) Loading extension XVideo
[    44.192] (II) Loading extension XVideo-MotionCompensation
[    44.192] (II) Loading extension X-Resource
[    44.192] (II) LoadModule: "dbe"
[    44.192] (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
[    44.192] (II) Module dbe: vendor="X.Org Foundation"
[    44.192]    compiled for 1.12.4, module version = 1.0.0
[    44.192]    Module class: X.Org Server Extension
[    44.192]    ABI class: X.Org Server Extension, version 6.0
[    44.192] (II) Loading extension DOUBLE-BUFFER
[    44.192] (II) LoadModule: "glx"
[    44.192] (II) Loading /usr/lib/xorg/modules/linux/libglx.so
[    44.201] (II) Module glx: vendor="NVIDIA Corporation"
[    44.201]    compiled for 4.0.2, module version = 1.0.0
[    44.201]    Module class: X.Org Server Extension
[    44.201] (II) NVIDIA GLX Module  304.88  Wed Mar 27 14:46:57 PDT 2013
[    44.201] (II) Loading extension GLX
[    44.201] (II) LoadModule: "record"
[    44.201] (II) Loading /usr/lib/xorg/modules/extensions/librecord.so
[    44.201] (II) Module record: vendor="X.Org Foundation"
[    44.201]    compiled for 1.12.4, module version = 1.13.0
[    44.201]    Module class: X.Org Server Extension
[    44.201]    ABI class: X.Org Server Extension, version 6.0
[    44.201] (II) Loading extension RECORD
[    44.201] (II) LoadModule: "dri"
[    44.201] (II) Loading /usr/lib/xorg/modules/extensions/libdri.so
[    44.201] (II) Module dri: vendor="X.Org Foundation"
[    44.201]    compiled for 1.12.4, module version = 1.0.0
[    44.201]    ABI class: X.Org Server Extension, version 6.0
[    44.201] (II) Loading extension XFree86-DRI
[    44.201] (II) LoadModule: "dri2"
[    44.202] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
[    44.202] (II) Module dri2: vendor="X.Org Foundation"
[    44.202]    compiled for 1.12.4, module version = 1.2.0
[    44.202]    ABI class: X.Org Server Extension, version 6.0
[    44.202] (II) Loading extension DRI2
[    44.202] (II) LoadModule: "nvidia"
[    44.202] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[    44.202] (II) Module nvidia: vendor="NVIDIA Corporation"
[    44.202]    compiled for 4.0.2, module version = 1.0.0
[    44.202]    Module class: X.Org Video Driver
[    44.202] (II) NVIDIA dlloader X Driver  304.88  Wed Mar 27 14:28:14 PDT 2013
[    44.202] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    44.202] (--) using VT number 7

[    44.205] (EE) No devices detected.
[    44.205]
Fatal server error:
[    44.205] no screens found
[    44.205]
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[    44.205] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    44.205]

Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual or fbconfig
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0

00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GTX 660M] (rev ff)
02:00.0 Ethernet controller: Qualcomm Atheros AR8161 Gigabit Ethernet (rev 08)
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 2200 (rev c4)
04:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
04:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
04:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
04:00.4 System peripheral: JMicron Technology Corp. xD Host Controller (rev 30)

00:00.0 0600: 8086:0154 (rev 09)
00:01.0 0604: 8086:0151 (rev 09)
00:02.0 0300: 8086:0166 (rev 09)
00:14.0 0c03: 8086:1e31 (rev 04)
00:16.0 0780: 8086:1e3a (rev 04)
00:1a.0 0c03: 8086:1e2d (rev 04)
00:1b.0 0403: 8086:1e20 (rev 04)
00:1c.0 0604: 8086:1e10 (rev c4)
00:1c.1 0604: 8086:1e12 (rev c4)
00:1c.3 0604: 8086:1e16 (rev c4)
00:1d.0 0c03: 8086:1e26 (rev 04)
00:1f.0 0601: 8086:1e59 (rev 04)
00:1f.2 0106: 8086:1e03 (rev 04)
00:1f.3 0c05: 8086:1e22 (rev 04)
01:00.0 0300: 10de:0fd4 (rev ff)
02:00.0 0200: 1969:1091 (rev 08)
03:00.0 0280: 8086:0891 (rev c4)
04:00.0 0880: 197b:2392 (rev 30)
04:00.2 0805: 197b:2391 (rev 30)
04:00.3 0880: 197b:2393 (rev 30)
04:00.4 0880: 197b:2394 (rev 30)