Увеличение времени работы linux от батареи

Купила себе новый лаптоп ThinkPad T-430. Обещали 16ч работы от батареи, но держал он только 4 и то, если яркость на минимум. При этом ос была Ubuntu 12.04. Батарейка в нем на 7700 мАч, и она явно должна держать больше чем 4 часа…
Погуглив была обнаружена tlp. Вкратце, это такая штука, которая рулит железом и можно удобно и главное быстро настроить, увеличив время работы от батареи.
После время работы от батарейки стало как минимум 9 часов, на максимальной яркости. В ноль разрядить не успела. После 3 часов работы на максимальной яркости, с запущенной виртуалкой и wifi осталось ~70% и вангамод вещал, что еще 6.5 часов можем жить ни о чем не беспокоясь. На минимальной не тестировала.
Запускать sudo tlp start
Можно еще посмотреть tlp —help и man tlp
Вот мой конфиг

root@irenica-ThinkPad-T430:/home/irenica# cat /etc/default/tlp
# ------------------------------------------------------------------------------
# tlp - Parameters for power save
# Hint: some features are disabled by default, remove the leading # to enable them
# Set to 0 to disable/1 to enable TLP
TLP_ENABLE=1
# Seconds laptop mode has to to wait after the disk goes idle before doing a sync.
# Non-zero value enables, zero disables laptop mode.
DISK_IDLE_SECS_ON_AC=0
DISK_IDLE_SECS_ON_BAT=2
# Dirty page values (timeouts in secs).
MAX_LOST_WORK_SECS_ON_AC=15
MAX_LOST_WORK_SECS_ON_BAT=60
# Select a cpu frequency scaling governor: ondemand/powersave/performance/conservative
# Important:
# - You *must* disable your distribution's governor settings or conflicts will occur
# - ondemand is sufficient for *almost all* workloads, you should know what you're doing!
CPU_SCALING_GOVERNOR_ON_AC=ondemand
CPU_SCALING_GOVERNOR_ON_BAT=powersave
# Set the min/max frequency available for the scaling governor.
# Possible values strongly depend on your cpu. For available frequencies see
# tlp-stat output, Section "+++ Processor".
# Hint: Parameters are disabled by default, remove the leading # to enable them,
# otherwise kernel default values are used.
#CPU_SCALING_MIN_FREQ_ON_AC=0
#CPU_SCALING_MAX_FREQ_ON_AC=0
#CPU_SCALING_MIN_FREQ_ON_BAT=0
#CPU_SCALING_MAX_FREQ_ON_BAT=0
# Set the cpu "turbo boost" feature: 0=disable / 1=allow
# Requires an Intel Core i processor and kernel 3.7 or later.
# Important:
# - This may conflict with your distribution's governor settings
# - A value of 1 does *not* activate boosting, it just allows it
CPU_BOOST_ON_AC=1
CPU_BOOST_ON_BAT=0
# Minimize number of used cpu cores/hyper-threads under light load conditions
SCHED_POWERSAVE_ON_AC=0
SCHED_POWERSAVE_ON_BAT=1
# Kernel NMI Watchdog
# 0=disable (default, saves power) / 1=enable (for kernel debugging only)
NMI_WATCHDOG=0
# Change CPU voltages aka "undervolting" - Kernel with PHC patch required
# Freq:voltage pairs are written to /sys/devices/system/cpu/cpu0/cpufreq/phc_controls
# CAUTION: only use this, if you thoroughly understand what you are doing!
#PHC_CONTROLS="F:V F:V F:V F:V"
# Hard disk devices, separate multiple devices with spaces (default: sda).
# Devices can be specified by disk id too (lookup with: tlp diskid).
DISK_DEVICES="sda sdb"
# Hard disk advanced power management level: 1(max saving)..254(off)
# Levels 1..127 may spin down the disk.
# Separate values for multiple devices with spaces.
DISK_APM_LEVEL_ON_AC="254 254"
DISK_APM_LEVEL_ON_BAT="128 128"
# Hard disk spin down timeout:
# 0: spin down disabled
# 1..240: timeouts from 5s to 20min (in units of 5s)
# 241..251: timeouts from 30min to 5.5 hours (in units of 30min)
# (see 'man hdparm' for details)
#DISK_SPINDOWN_TIMEOUT_ON_AC="0 0"
#DISK_SPINDOWN_TIMEOUT_ON_BAT="0 0"
# Select io scheduler for the disk devices: noop/deadline/cfq (Default: cfq)
# Separate values for multiple devices with spaces.
#DISK_IOSCHED="cfq cfq"
# SATA aggressive link power management (ALPM):
# min_power/medium_power/max_performance
SATA_LINKPWR_ON_AC=max_performance
SATA_LINKPWR_ON_BAT=min_power
# PCI Express Active State Power Management (PCIe ASPM):
# default/performance/powersave
# Hint: needs kernel boot option pcie_aspm=force on some machines
PCIE_ASPM_ON_AC=performance
PCIE_ASPM_ON_BAT=powersave
# Radeon graphics clock speed (profile method): low/mid/high/auto/default
# auto = mid on BAT, high on AC; default = use hardware defaults
# (Kernel >= 2.6.35 only, not with fglrx driver!)
RADEON_POWER_PROFILE_ON_AC=high
RADEON_POWER_PROFILE_ON_BAT=low
# New radeon dynamic power management method (dpm): battery/performance
# (Kernel >= 3.11 only, requires boot option radeon.dpm=1)
RADEON_DPM_STATE_ON_AC=performance
RADEON_DPM_STATE_ON_BAT=battery
# New radeon dpm performance level: auto/low/high (auto is recommended)
RADEON_DPM_PERF_LEVEL_ON_AC=auto
RADEON_DPM_PERF_LEVEL_ON_BAT=auto
# WiFi power saving mode: 1=disable/5=enable
# (Linux 2.6.32 and later, some adapters only!)
WIFI_PWR_ON_AC=1
WIFI_PWR_ON_BAT=5
# Disable wake on lan: Y/N
WOL_DISABLE=Y
# Enable audio power saving for Intel HDA, AC97 devices (timeout in secs).
# A value of 0 disables / >=1 enables power save.
SOUND_POWER_SAVE=1
# Disable controller too (HDA only): Y/N
SOUND_POWER_SAVE_CONTROLLER=Y
# Set to 1 to power off optical drive in UltraBay (ThinkPads only)
# when running on battery. A value of 0 disables this Feature (Default).
# Drive can be powered on again by releasing (and reinserting) the
# eject lever or by pressing the disc eject button on newer models.
# Note: an UltraBay hard disk is never powered off.
BAY_POWEROFF_ON_BAT=1
# Optical drive device to power off (default sr0)
BAY_DEVICE="sr0"
# Runtime Power Management for pci(e) bus devices
# (Kernel >= 2.6.35 only): on=disable/auto=enable
RUNTIME_PM_ON_AC=on
RUNTIME_PM_ON_BAT=auto
# Runtime PM for *all* pci(e) bus devices, expect backlisted ones:
# 0=disable / 1=enable
# Warning: experimental option, could cause system instabilities
RUNTIME_PM_ALL=0
# Exclude pci(e) device adresses the following list from Runtime PM
# (separate with spaces). Use lspci to get the adresses (1st column).
#RUNTIME_PM_BLACKLIST="bb:dd.f 11:22.3 44:55.6"
# Set to 0 to disable/1 to enable usb autosuspend feature
USB_AUTOSUSPEND=1
# Devices from the following list are excluded from usb autosuspend
# (separate with spaces). Use lsusb to get the ids.
# Note: input devices (usbhid) are excluded automatically
#USB_BLACKLIST="1111:2222 3333:4444"
# WWAN devices are excluded from usb autosuspend:
# 0=do not exclude / 1=exclude
# Note: works for ids 05c6:* 0bdb:* 1199:* only
USB_BLACKLIST_WWAN=1
# Set to 1 to disable autosuspend before shutdown/0 to do nothing
# (workaround for usb devices that cause shutdown problems)
#USB_AUTOSUSPEND_DISABLE_ON_SHUTDOWN=1
# Restore radio device state (bluetooth, wifi, wwan) from previous shutdown
# on system startup: 0=disable/1=enable
# Hint: the parameters DEVICES_TO_DISABLE/ENABLE_ON_STARTUP/SHUTDOWN below
# are ignored when this is enabled!
RESTORE_DEVICE_STATE_ON_STARTUP=0
# Radio devices to disable on startup: bluetooth wifi wwan
DEVICES_TO_DISABLE_ON_STARTUP="bluetooth"
# Radio devices to enable on startup: bluetooth wifi wwan
#DEVICES_TO_ENABLE_ON_STARTUP="wifi"
# Radio devices to disable on shutdown: bluetooth wifi wwan
# (workaround for devices that are blocking shutdown)
#DEVICES_TO_DISABLE_ON_SHUTDOWN="bluetooth wifi wwan"
# Radio devices to enable on shutdown: bluetooth wifi wwan
# (to prevent other operating systems from missing radios)
#DEVICES_TO_ENABLE_ON_SHUTDOWN="wwan"
# Radio devices to enable when wireless radio switch is turned on:
# bluetooth wifi wwan (Ubuntu + ThinkPad only)
DEVICES_TO_ENABLE_ON_RADIOSW="wifi wwan"
# Battery charge thresholds (ThinkPad only, tp-smapi or acpi-call kernel module required)
# Charging starts when the remaining capacity falls below the START_CHARGE_TRESH
# value and stops when exceeding the STOP_CHARGE_TRESH value.
# Main battery (values in %)
START_CHARGE_THRESH_BAT0=75
STOP_CHARGE_THRESH_BAT0=80
# Ultrabay or slice battery (values in %)
#START_CHARGE_THRESH_BAT1=75
#STOP_CHARGE_THRESH_BAT1=80
# Set to 1 to disable use of tpacpi-bat on Sandy Bridge or newer Thinkpads
# and force usage of tp-smapi instead
DISABLE_TPACPIBAT=1
# ------------------------------------------------------------------------------
# tlp-rdw - Parameters for the radio device wizard
# Possible devices: bluetooth/wifi/wwan
# Hint: parameters are disabled by default, remove the leading # to enable them
# Radio devices to disable on connect
#DEVICES_TO_DISABLE_ON_LAN_CONNECT="wifi wwan"
#DEVICES_TO_DISABLE_ON_WIFI_CONNECT="wwan"
#DEVICES_TO_DISABLE_ON_WWAN_CONNECT="wifi"
# Radio devices to enable on disconnect
#DEVICES_TO_ENABLE_ON_LAN_DISCONNECT="wifi wwan"
#DEVICES_TO_ENABLE_ON_WIFI_DISCONNECT=""
#DEVICES_TO_ENABLE_ON_WWAN_DISCONNECT=""
# Radio devices to enable/disable when docked
#DEVICES_TO_ENABLE_ON_DOCK=""
#DEVICES_TO_DISABLE_ON_DOCK=""
# Radio devices to enable/disable when undocked
#DEVICES_TO_ENABLE_ON_UNDOCK="wifi"
#DEVICES_TO_DISABLE_ON_UNDOCK=""