changelog

+++ 1.4.0-alpha.0 --- <unreleased> +++

  *** Development version ***

  * Features
    Audio:
      - SOUND_POWER_SAVE_ON_AC: change default to enabled (Issue #495)
    Battery Features:
      - Discharge malfunction: hint to check battery, charger
      - tlp-stat -b
        - Map battery state "Unknown" to "Idle" for clarity
        - Flag ThinkPad L512 as "unsupported"
    Configuration:
        - PARAMETER+="add values": append values to a parameter already defined
          as intrinsic default or in a *previously* read file (Issue #457)
        - Rename parameters (backwards compatible to legacy config files):
            SATA_LINKPWR_BLACKLIST      -> SATA_LINKPWR_DENYLIST
            RUNTIME_PM_BLACKLIST        -> RUNTIME_PM_DENYLIST
            RUNTIME_PM_DRIVER_BLACKLIST -> RUNTIME_PM_DRIVER_DENYLIST
            USB_BLACKLIST               -> USB_DENYLIST
            USB_BLACKLIST_BTUSB         -> USB_EXCLUDE_BTUSB
            USB_BLACKLIST_PHONE         -> USB_EXCLUDE_PHONE
            USB_BLACKLIST_PRINTER       -> USB_EXCLUDE_PRINTER
            USB_BLACKLIST_WWAN          -> USB_EXCLUDE_WWAN
            USB_WHITELIST               -> USB_ALLOWLIST
    Disks:
      - DISK_APM_CLASS_DENYLIST: exclude disk classes from APM, i.e. you may
        now activate it for USB and IEEE1394 drives (Issue #523)
      - DISK_APM_LEVEL_ON_AC/BAT, DISK_SPINDOWN_TIMEOUT_ON_AC, DISK_IOSCHED:
        now also work when plugging in USB disks; provided disk is contained in
        DISK_DEVICES and 'usb' is removed from DISK_APM_CLASS_DENYLIST
      - AHCI_RUNTIME_PM_ON_AC/BAT:
        - Works only on disks defined in DISK_DEVICES
        - Works on NVMe (new), SATA/ATA and plugged in USB (new) disks
        - Works on SATA ports
        - No longer experimental, now enabled by default; the previously
          existing risk of system freezes with the multiqueue scheduler is now
          effectively prevented:
          - Kernel >= 4.19 itself locks unsafe disk runtime pm
          - TLP generally locks it for kernel < 4.19
      - tlp-stat -d
        - Show IDs for all disks configured in DISK_DEVICES
        - Distinguish SATA from ATA(IDE) disks
        - Show disks attached to SATA links/ports
        - Show a disk's host (for SATA_LINKPWR_DENYLIST)
        - Explain why runtime pm is locked for a disk
        - Show ALPM state in the sysfs directory of the AHCI host
        - Remove "No AHCI-enabled host controller detected." message
    General:
        - tlp-stat -s: determine OS release without the lsb_release utility
    Graphics:
        - Add support for amdgpu (#498)
        - Improve powerdown of unused GPUs with drivers amdgpu, nouveau,
          nvidia and without driver (Issues #488, #495, #498)
        - tlp-stat -g:
          - Show hybrid graphics switch state (switcheroo)
          - List all GPUs with at least the driver info
    Operation Mode AC/BAT:
      - Speed up power source detection (obsolete delayed battery state check
        removed)
      - Speed up system shutdown/suspend by not applying AC settings anymore
    PCI(e) devices:
       - RUNTIME_PM_ENABLE/DISABLE: permanently enable/disable runtime PM for
         PCI(e) devices based on address (independent of the power source)
       - RUNTIME_PM_DENYLIST: remove amdgpu, nvidia, pcieport from defaults
    Processor:
      - Remove backwards compatibility of CPU_ENERGY_PERF_POLICY_ON_AC/BAT with
        ENERGY_PERF_POLICY_ON_AC/BAT to prevent performance issues caused by the
        value 'power' in legacy configurations
      - tlp-stat -p:
        - cpu1..cpuN omitted for clarity, use -v to show all
        - Sort more than 10 CPU cores in proper numerical order

  * Bugfixes
    Battery Features:
      - tlp discharge/recalibrate: terminate properly when AC/charger is removed
      - [Try to] mitigate false threshold readouts caused by the annoying
        firmware issue on ThinkPad A/E/L/S series (Issue #369)
    Disks:
      - Issue #474: confine AHCI_RUNTIME_PM_ON_AC/BAT to SATA disks
    Graphics:
      - Issue #488: Idle temperature 20 °C higher on battery (Nvidia GPU)
      - Issue #495: SOUND_POWER_SAVE_ON_AC=0 prevents powerdown of Nvidia GPU

+++ 1.3.1 --- 06.02.2020 +++

  * Bugfixes
    Processor:
      - Issue #460: default CPU_ENERGY_PERF_POLICY_ON_BAT=power too aggressive

+++ 1.3.0 --- 31.01.2020 +++

  * Features
    New configuration scheme:
      - /etc/default/tlp is replaced by /etc/tlp.conf
      - Settings are read in the following order:
          1. Intrinsic defaults
          2. /etc/tlp.d/*.conf - Drop-in customization snippets
          3. /etc/tlp.conf     - User configuration
        In case of identical parameters, the last occurence has precedence
      - Parse config files instead of sourcing --> no more shell expansion
    Battery Features, tlp-stat -b:
      - Charge thresholds: better checks for command line and configuration;
        clearer error messages
      - tlp discharge: error message "check your hardware" when battery wasn't
        completely discharged (Issue #438)
      - Distinguish between "no kernel support" for natacpi (< 4.17) and
        "laptop not supported" (>= 4.17)
      - Supplement battery status "Unknown" with "threshold may prevent
        charging" when thresholds are available only
    General:
      - systemd: replace tlp-sleep.service with /lib/systemd/system-sleep/tlp
    Operation Mode AC/BAT:
      - TLP_PS_IGNORE: power supply class to ignore when determining operation
        mode; workaround for laptops reporting incorrect AC or battery status
        (Issue #446)
    PCI(e) devices:
      - PCIE_ASPM_ON_AC/BAT: add method 'powersupersave' (Issue #425)
    Processor:
      - CPU_ENERGY_PERF_POLICY_ON_AC/BAT: backward compatible merge of
        settings for Intel energy vs. performance policies
        EPB (ENERGY_PERF_POLICY_ON_AC/BAT) and HWP.EPP (CPU_HWP_ON_AC/BAT);
        when HWP.EPP is available, EPB is not set; validate parameters;
        eliminate external tool x86_energy_perf_policy for kernel >= 5.2
    tlp-stat:
      - Configuration: show file where the parameter comes from
      - System Info:
        - Show SELinux status
        - Show RDW as 'disabled' when TLP is disabled as a whole
        - Indicate persistent mode
      - Intel CPU: don't show EPB values when HWP.EPP is active (see above)
      - PCIe ASPM: show available policies
      - Undervolting: remove "PHC kernel not available" message

  * Bugfixes
    Battery Features:
      - Issue #415: ThinkPad X240 discharge BAT1 malfunction when BAT0 is not
        installed
    Disks:
      - Fix NVMe detection on Linux 4.15
    tlp-stat:
      - Issue #430: ignore hid device batteries

+++ 1.2.2 --- 04.05.2019 +++

  * Bugfixes
    Battery Features, tlp-stat -b:
      - Show data for batteries named other than BAT0/BAT1 (non-ThinkPads)
      - Issue #395: ThinkPad X1C6 discharge malfunction
      - Separate checks for charge thresholds and recalibration
      - Intelligible recommendation for tp-smapi on ThinkPad X220/T420 et al.
      - Explain "Battery Features: Charge Thresholds and Recalibrate"
    Disks:
      - Fix type determination
    Operation Mode AC/BAT:
      - MacBookPro 5.3: workaround for false AC offline status
    Processor, tlp-stat -p:
      - Fix read of /sys/devices/system/cpu/cpufreq/boost
      - x86_energy_perf_policy: detect unsupported CPUs in newer versions
    Radio Devices:
      - Issue #404: make RESTORE_DEVICE_STATE_ON_STARTUP=1 persistent again

+++ 1.2.1 --- 18.03.2019 +++

  * Bugfix
    - Issue #391: unknown command "chargeonce"

+++ 1.2 --- 11.03.2019 +++

  * Features
    Disks:
      - Support for NVMe devices
      - Support for removable drives e.g. USB / IEE1394 devices
      - Improve support for multi queue I/O schedulers (blk-mq)
    General:
      - tlp bat/ac: keep manual power settings until tlp start (Issue #349)
      - Remove all pm-utils scripts (Issue #363)
      - tlp/tlp-stat: Temporarily overwrite configuration for one program
        invocation only: -- PARAM=value ...
      - Document intrinsic defaults in config file (Issue #353)
      - Code verified with ShellCheck
    Graphics:
      - INTEL_GPU_MIN_FREQ_ON_AC/BAT, INTEL_GPU_MAX_FREQ_ON_AC/BAT,
        INTEL_GPU_BOOST_FREQ_ON_AC/BAT: Intel GPU frequency limits
    Radio Devices:
       - tlp-rdw: new command to disable RDW actions temporarily (until reboot)
       - Support ThinkPad Pro Dock CS18 (17ef:306f)
       - USB_BLACKLIST_WWAN: disable by default
       - Retire compatibility with Network Manager 0.9.8 (Ubuntu 14.04 EOL)
    PCI(e) devices:
       - RUNTIME_PM_BLACKLIST: add mei_me, pcieport
    ThinkPad Battery:
      - New native kernel API for battery features "natacpi" (Issue #321);
        requires kernel 4.17; enabled by default
      - NATACPI_ENABLE, TPACPI_ENABLE, TPSMAPI_ENABLE: make all battery feature
        drivers switchable
      - tlp discharge/recalibrate: exclude multiple simultaneous invocations
      - Support ThinkPad 25, *80 (Coffee Lake) and all newer models
    tlp-stat:
      - Check systemd-rfkill.socket masked status
      - Disks: show all configured devices (consider default)
      - Intel GPU: show frequency limits and available frequencies
      - Rename "Suggestions" section to "Recommendations"
      - Remove invocation via 'tlp stat'
    USB:
      - Exclude scanners managed by libsane from autosuspend
      - Remove long deprecated level/autosuspend attributes

  * Bugfixes
    - Issue #193: do not try to start NetworkManager (systemd)
    - Issue #319: get_disk_dev logic is not compatible with NVMe devices
    - Issue #320: AC mode not detected with USB charger
    - Issue #331: Process '/usr/bin/tlp auto' failed with exit code 4
    - Issue #332: zsh parse error in tlp diskid
    - Issue #343, #362, #375: circumvent broken AC/charger detection
    - Issue #344: keep ASPM default to enable deeper C-states on AC
    - Issue #356: fix writing sequence for start/stop charge thresholds
    - Issue #368: recognize Think*p*ad P50
    - tlp-stat: filter HWP lines from x86_energy_perf_policy output

+++ 1.1 --- 24.01.2018 +++

  * Features
    Disks:
      - SATA_LINKPWR_ON_AC/BAT: try multiple values to support new recommended
        ALPM policy "med_power_with_dipm" in kernel 4.15
    Processor:
      - Issue #297: ENERGY_PERF_POLICY_ON_AC/BAT: support changed values
            performance, balance-performance, default, balance-power, power
    ThinkPad Battery:
      - Support ThinkPad 13 1st & 2nd Gen, E130; new tpacpi-bat version
      - tlp-stat --psup: show ASLbase for tpacpi-bat (in device/path)
      - tlp discharge: show state of battery and force_discharge
    USB:
      - USB_BLACKLIST_PRINTER: exclude printers from autosuspend

  * Bugfixes
    - Issue #271: intercept link_power_management_policy write error
    - Issue #283: fix AC power detection for MacBook Pro 2017
    - Issue #298: move runtime data from /var/run/tlp to /run/tlp
    - Issue #301: DEVICES_TO_DISABLE_ON_BAT_NOT_IN_USE="bluetooth"
          not working as expected
    - Issue #313: don't detect wireless input devices' batteries as power supply

+++ 1.0 --- 25.05.2017 +++

  * Features
    General:
      - TLP_PERSISTENT_DEFAULT: use TLP_DEFAULT_MODE regardless of the actual
        power source
    Device Bays:
      - BAY_POWEROFF_ON_AC: power off optical drive not only on bat (Issue #243)
    Graphics:
      - RUNTIME_PM_DRIVER_BLACKLIST: when unconfigured default to
        "amdgpu nouveau nvidia radeon"; driver default control=auto allows
        PRIME/Bumblebee to turn the dGPU off and prevents accidential power-on
        during boot as well
      - Exclude Nvidia dGPU from runtime power management even when no driver
        is associated (improve compatibility with Bumblebee)
    PCI(e) devices
      - RUNTIME_PM_ALL removed (default to RUNTIME_PM_ALL=1 internally)
    Processor:
      - CPU_HWP_ON_AC/BAT: HWP energy performance hints; needs kernel 4.10 and
        Intel Skylake CPU or newer, intel_pstate only
    ThinkPad Battery:
      - RESTORE_THRESHOLDS_ON_BAT: restore charge thresholds on battery
      - Detect ThinkPad *70 models (Kaby Lake)
      - Detect ThinkPad 13 (1st and 2nd Gen) as unsupported (Issue #227)
      - Change texts "ThinkPad (extended) battery functions" to
        "ThinkPad battery features"
      - tlp-stat:
        - Show "Charge total %" when more than one battery is present
        - Show battery temperature (tp-smapi only)
        - Show "unsupported" instead of "not installed" for tp-smapi incapable
          hardware
    USB:
      - USB_BLACKLIST_BTUSB: exclude bluetooth devices from autosuspend
        (Issue #239)
      - USB_BLACKLIST_PHONE: exclude phone devices from autosuspend
        (Issue #188)
    tlp-stat:
      - -g|--graphics: show graphics card data only
      - i915: explain enable_psr modes
      - --psup: show power supply diagnostic
      - SMART attribute G-Sense_Error_Rate (191)
      - -v: additional battery voltages
      - Workqueue power efficient status

  * Bugfixes
    - Issue #237: init start: apply powersave regardless of previous state
    - Issue #256: tlp-stat: intercept non-existing or invalid charge values
    - tlp-stat: show Intel graphics parameters for Ubuntu's i915_bpo module

+++ 0.9 --- 18.08.2016 +++

  * Features
    General:
      - Block concurrent invocation of tlp
    Disks:
      - AHCI runtime power management for host controllers and attached disks
      - SATA_LINKPWR_BLACKLIST: exclude SATA host devices from power management
    Radio Devices:
      - Finally remove deprecated DEVICES_TO_ENABLE_ON_RADIOSW code
        (works with Ubuntu 12.04/Kernel 3.2 only)
      - Change WIFI_PWR_ON_AC/BAT default config values to off/on for better
        usability (1/5 is still supported for backwards compatibility)
    Radio Device Wizard (tlp-rdw):
      - Add another ThinkPad OneLink Pro Dock USB LAN (17ef:304)
    (ThinkPad) Battery:
      - tlp-stat:
        - Distinguish incompatible hardware from load errors (Issue #160)
        - Display battery charge and capacity values in %
        - More selective suggestions for tp-smapi/acpi-call kernel modules
    tlp-stat:
      - Intel graphics: include i915 parameters enable_dc, enable_psr, modeset
      - --pev: monitor power supply udev events (Issue #172)
      - Processor:
        - Display available scaling governors
        - intel_pstate: display turbo_pct, num_pstates
      - Storage Devices:
        - Recognize blk-mq I/O scheduler
        - SMART attributes Power_Cycle_Count, Unused_Rsvd_Blk_Cnt_Tot,
        NAND_Writes_1GiB
      - Suggestions: add *60 models for tp-smapi/acpi-call
      - System Info: display boot mode UEFI / BIOS
      - TLP Status:
        - Display time and mode of tlp's last invocation
        - Issue warning when systemd-rfkill[@].service is not masked
      - Wireless: display type in interface list

  * Bugfixes
    - Issue #163: handle kernel with built-in acpi_call module properly
    - Issue #170: battery discharge does not terminate on ThinkPad E-series
    - Issue #172: TLP does not notice power source change
    - Issue #175: do not touch wifi on shutdown when unconfigured
    - Issue #176: optimize rdw locking heuristics
    - tlp-stat: fix ata error count (filter "DevExch" caused by bay inserts)
    - tp-smapi: do not load on unsupported ThinkPads
    - Fix bash completion

+++ 0.8 --- 05.08.2015 +++

  * Features
    General:
      - TLP_DEFAULT_MODE: change default operation mode to AC when no power supply
        can be detected (concerns some desktop and embedded hardware only)
    Radio Devices:
      - Resume: restore bluetooth state (derball2008)
    Radio Device Wizard (tlp-rdw):
      - Support ThinkPad OneLink Dock Basic/Pro for dock/undock events
      - Detect systemd "predictable network interface names" for WWAN
    ThinkPad Battery:
      - tpacpi-bat: new upstream version 2.2: get ASL path from
        /sys/class/power_supply/*/device/path; avoids unnecessary
        "AE_NOT_FOUND" kernel messages
      - tlp-stat:
        - Show "No batteries detected."
        - Explain battery status "Unknown" as "threshold effective"
        - Show battery cell group voltages (verbose mode, tp-smapi only)
        - Show acpi-call suggestion for ThinkPad *40, *50, X1 models
    USB:
      - Remove USB_DRIVER_BLACKLIST (because of issues #147, #149, see below)
    tlp-stat:
      - Show warnings for ata errors by default

  * Bugfixes
    - Issue #123: tlp-stat: detect kernel config with PM_RUNTIME=N
    - Issue #124: tlp recalibrate: fix exitcode check
    - Issue #133: USB autosuspend: write power/control if actually changing only
    - Ignore missing files in /proc/sys/fs/xfs (Gijs Hillenius)
    - Issues #147, #149: fix udev event processing for AC/BAT switching
      and USB hotplugging (required for udevd v221 and higher)

+++ 0.7 --- 29.01.2015 +++

  * Features
    Processor:
    - Limit max/min P-state to control power dissipation of the CPU
      (intel_pstate only)
    - Set performance versus energy savings policy (x86_energy_perf_policy)
    USB:
    - USB_DRIVER_BLACKLIST: exclude devices assigned to the listed drivers
      from USB autosuspend; default: usbhid
    - USB_BLACKLIST_WWAN: match internal driver list instead of USB vendor ids
    - USB_WHITELIST: include devices into USB autosuspend even if
      already excluded by the driver or WWAN blacklists
    Radio devices:
    - DEVICES_TO_ENABLE_ON_AC/DISABLE_ON_BAT/DISABLE_ON_BAT_NOT_IN_USE:
      enable/disable radio devices upon change of power source
      (excluding connected devices)
    ThinkPad Battery:
    - Issue #105: provide proper return codes for all battery functions
    - Issue #106: setcharge allowed on battery power
    - Do not activate new thresholds with force_discharge anymore (tp-smapi)
    - tpacpi-bat: support for ThinkPad E325 charge thresholds
    Misc:
    - RUNTIME_PM_DRIVER_BLACKLIST: exclude PCI(e) devices assigned to drivers;
      default: radeon, nouveau (solves issue #94)
    - Support Dell Latitude docks
    tlp-stat:
      - New options -d|--disk, -e|--pcie, -p|--processor,
                    -s|--system, -u|--usb
      - Show driver and connection state for all enabled radio devices
      - Show driver name in Runtime PM PCI(e) device list
      - Show type and state of docks and device bays
      - Show type of init system
      - Check if TLP's systemd services are enabled (zenox)

  * Bugfixes
    Udev:
    - Run change of power source in a detached subshell to avoid blocking udev
    - Fix dock/undock event processing for ThinkPad Adv Mini Dock and Ultrabase
    - Make USB device event processing more robust
      - Run in a detached subshell to avoid blocking udev
      - Wait 2s for subdevices to populate for proper black/whitelist detection
    Misc:
    - Support for NM 0.9.10 (Debian Jessie)
    - Issue #109: tlp-stat: report "unknown" power source when no AC detected
    - Issue #98: do not change autosuspend_delay_ms, keep kernel default
      settings (garyp)
    - Exclude pseudo usb disks (Raphaël Halimi)

  * Misc
    - Add AUTHORS file

+++ 0.6 --- 06.10.2014 +++

  * Features
    - Set systemd service type to simple, allows tlp service
      to start asynchronously in the background (Timofey)
    - Remove DISABLE_TPACPIBAT from configuration
    - Remove DEVICES_TO_ENABLE_ON_RADIOSW from configuration because
      it's deprecated: works with Ubuntu 12.04/Kernel 3.2 only
    - Enable RUNTIME_PM_ALL by default
    - Do not touch kernel settings if param is empty or commented:
        DISK_IDLE_SECS_ON, MAX_LOST_WORK_SECS_ON,
        SCHED_POWERSAVE_ON, NMI_WATCHDOG,
        SATA_LINKPWR_ON, PCIE_ASPM_ON,
        RADEON_DPM_STATE_ON, RADEON_POWER_PROFILE_ON,
        WIFI_PWR_ON, SOUND_POWER_SAVE_ON, RUNTIME_PM_ON.
    - DISK_APM_LEVEL_ON, DISK_SPINDOWN_TIMEOUT_ON, DISK_IOSCHED:
      use _ or keep to skip the setting for a particular disk
    - tlp-stat
      - Consider changed sysfs paths for i915 enable_rc6/fbc
        as of kernel 3.15 (M@C)
      - Consider changed sysfs paths for hwmon coretemp/sensors
        as of kernel 3.15/3.16
      - Report speed of all fans, not just the first one
      - Show warning for kernel sata errors (possibly) caused by
        SATA_LINKPWR_ON_BAT/AC=min/medium power
      - Retrieve trace output from systemd journal if present
    - Do not disable TLP when laptop-mode-tools is detected,
      just output a warning about possible conflicts

  * Bugfixes
    - Issue #74: Makefile: remove tlp-nop in uninstall-tlp target
      (beatinho, peterkenji94)
    - Issue #86: tlp-stat: don't suggest tp-smapi on non-ThinkPad
      hardware with thinkpad_acpi loaded (sayantandas)
    - tlp-stat: do not show /proc/acpi/ibm/fan on Lenovo non-ThinkPad
      models (Qasim)

+++ 0.5 --- 24.03.2014 +++

  * Features
    - tpacpi-bat: auto detection of all ThinkPad models (v2.1)
    - tlp-stat: include newer models in tpacpi-bat suggestions
    - tlp-rdw: support newer docks
    - Handle special case where BAT1 = main battery
      (Thinkpad Edge/L/S series)
    - Issue #61: sound power save depending on power source ac/bat
    - Issue #62: don't touch devices in RUNTIME_PM_BLACKLIST or excluded
      by RUNTIME_PM_ALL=0

  * Bugfixes
    - run-on-ac/bat: check if command exists
    - Issue #59: do not write sata link power when not configured
    - Fix RESTORE_DEVICE_STATE_ON_STARTUP (fabio)
    - Restore bay power state upon resume only when on bat power
      and the setting is active (xudabit)
    - Use nmcli before rfkill to change radio state; re-enable wifi
      on shutdown when not explicitly configured (Ubuntu 14.04)

  * Packaging
    - Create symlinks instead of hardlinks for bluetooth/wifi/wwan,
      run-on-ac/bat
    - Makefile: new params TLP_*
    - tlp.init: remove requirement $all

+++ 0.4.1 --- 02.01.2014 +++

  * Bugfix version (_not_ for Ubuntu/Debian)

  * Features
    - tpacpi-bat: support ThinkPad E431

  * Bugfixes
    - Bug #43: tlp-rdw not working with NM 0.9.9/Fedora 20 (wofritz)
    - Bug #44: run-on-ac|bat: remove dependency on pm-utils/on_ac_power

+++ 0.4 --- 17.09.2013 +++

  * Features
    - New radeon dynamic power management (dpm); needs Kernel >= 3.11
      (Pali Rohár)
    - RUNTIME_PM_BLACKLIST: exclude listed pci(e) device addresses
      from Runtime PM (wofritz)
    - USB_BLACKLIST_WWAN: exclude wwan devices from usb autosuspend;
      works for ids 05c6:* 0bdb:* 1199:* only
    - Apply ac settings for faster shutdown


+++ 0.3.11 --- 10.09.2013 +++

  *** Testing version (for Arch Linux) ***

  * Bugfixes
    - Issue #42:
      - Remove dependency to on_ac_power (part of pm-utils in
        Arch Linux)
      - Fix udev rule to detect power source change ac - bat

  * Packaging
    - Pull request #40: systemd: start tlp.service after
      local-fs.target instead of graphical.target (cprussin)

+++ 0.3.10 --- 17.08.2013 +++

  *** Testing version (for Arch Linux) ***

  * Architecture
    - Issue #36: detect change of power source via udev instead of being
      called by pm-powersave
    - Handle suspend/resume w/o pm-utils in systemd environments:
      - Encapsulate suspend/resume tasks as a tlp subcommand
      - Add tlp-sleep.service to call tlp suspend/resume
      - Remove 48tlp-rdw.lock because it doesn't work as expected

  * Features
    - Issue #31: detect and use intel_pstate driver to control
      turbo mode (ValdikSS)
    - Disable wol for all ethernet devices i.e. non-eth0 (blafoo)
    - tpacpi-bat:
      - merge upstream support for ThinkPad T430u, Edge E335/E530

  * Bugfixes
    - Issue #28: do not touch dirty_(background_)ratio anymore,
          i.e. revert setting to kernel defaults

  * Packaging
    - debian/control: remove ${shlibs:Depends}

+++ 0.3.9 --- 02.05.2013 +++

  * Features
    - tpacpi-bat:
      - merge upstream w/ support for ThinkPad (Edge) S430
      - add support for ThinkPad L530
    - tlp-stat:
      - Subtract offset 128 from threshold values on ThinkPad Edge S430
      - Show /sys/class/power_supply/BATx/cycle_count = 0 as "(unsupported)"
  * Bugfixes
    - Issue #14: tlp recalibrate fails when /bin/sh -> bash (slyon)
    - Bug #42: X121e battery functions not working (Jlp)
    - Set more reasonable values for dirty_ratio/dirty_background_ratio
    - Reverse order of writing the thresholds upon system start
      to stop - start, to achieve a consistent tlp-stat output between
      tlp init/start and tlp setcharge on quirky Edge and L series.
    - tlp-stat:
      - Fix threshold output trailing empty line

 +++ 0.3.8.1-3 --- 07.04.2013 +++

  * Packaging
    - Fix #41: postinst/postrm fails without acpid (Petit Carlin)
        - recommends: acpid
        - postinst/rm: ignore missing acpid

+++ 0.3.8.1 --- 29.03.2013 ***

  * Packaging
    - Remove obsolete desktop autostart hook
    - New format for debian/copyright
    - Add dummy case construct to tlp.init to make lintian happy
    - Rename tlp-init.service to tlp.service
    - postinst/postrm: restart acpid for thinkpad-radiosw event
    - Move smartmontools to "recommends:"

  * Features
    - New options CPU_BOOST_ON_* for cpu turbo boost (Linux 3.7 or later)
    - New option DEVICES_TO_ENABLE_ON_RADIOSW to enable only selected radios
      when wireless radio switch is turned on (Ubuntu + ThinkPad only)
    - [EXPERIMENTAL] New option RUNTIME_PM_ALL to activate runtime pm for
      all PCI(e) devices
    - tpacpi-bat: new upstream version (25.03.2013, commit dd5a682)
        - add support for X121e, L430, E420s, S420
    - tlp chargeonce: charge battery to upper threshold once
    - tlp discharge: show current power consumption
    - tlp-stat:
        - Nicer output, code refactored
        - Remove dmidecode – get DMI data from /sys/class/dmi/id/
        - When ASPM policy is not writable, show "using bios prefs"
        - Show interpretation for i915 params
        - Show disk status
        - Show tp-smapi, tpacpi-bat availability and status
        - Show cpu model
        - Resolve all pci device classes (new subcommand tlp-pcilist)
        - Show suggestions to install missing kernel modules/tools
    - Use iw for wifi power save if available, iwconfig is considered deprecated
    - Remove obsolete tlp wifi subcommand
    - Remove 2s delay in applying settings upon change of the power source

  * Bugfixes
    - tlp-stat:
        - Exclude usb media from "Storage Devices" section
        - Fix display of data in /sys/class/power_supply/BAT?/

+++ 0.3.7.1 --- 17.08.2012 +++

  * Bug fixes
    - #39: tlp-stat: /sys/devices/platform/coretemp.0/temp1_input
           does not exist (Laurent Bonnaud)

+++ 0.3.7 --- 13.08.2012 +++

  * Packaging
    - implement startup/shutdown code as a command: tlp init
    - systemd support: tlp-init.service
    - deb recommends: tlp-rdw; suggests: acpi-call, tp-smapi
  * Features
    - Battery charge thresholds for Sandy Bridge and later models
      (X220/T420/...) by means of tpacpi-bat
    - Use tpacpi-bat even when tp-smapi is not available; for
      Ivy Bridge models (X230/T430/...)
    - DEVICES_TO_ENABLE_ON_SHUTDOWN to prevent other operating systems
      from missing radios
    - DEVICES_TO_ENABLE_ON_STARTUP
    - tlp-stat:
      - show TRIM capabilty for SSDs
      - add SMART attributes (179, 241)
      - new cmdline options -r, -t, -T
      - show cpu temp, fan speed even if /proc/acpi/ibm/{thermal|fan}
        are not available
      - show tp_smapi/power_avg
  * Bug fixes
    - #34: system start hangs in Fedora 17 (DigitalFlow)
    - #35: shutdown results in reboot; new config param
           USB_AUTOSUSPEND_DISABLE_ON_SHUTDOWN (Thubo)
    - #38: wifi on/off not working with ipw2100/2200 (kristatos)

+++ 0.3.6-2 --- 24.03.2012 +++

  * Packaging:
    - Fix tlp.postinst for systems without upstart dir /etc/init/

+++ 0.3.6 --- 22.03.2014 +++

  * Features
    - handle usb autosuspend via udev events
    - usb hid detection overhauled (based on subdev/bInterfaceClass)
    - Restrict runtime pm to a safe subclass of pci devices
      (from Ubuntu Precise's implementation of pm-utils)
    - Restore radio device state on system startup (from previous shutdown)
    - Radio device wizard: switch radios upon network connect/disconnect
      and dock/undock events (samba)
    - Set cpu scaling governor and mix/max frequencies (Alex Lochmann)
    - tlp-stat: add smart attributes for samsung ssd
    - tlp-stat: show settings
  * Packaging
    - postinst/postrm:
      - disable power.d/harddrive, pci_devices, readahead,
          usb_bluetooth (Package pm-utils, Ubuntu 12.04)
      - disable conflicting upstart jobs (Package rfkill, Ubuntu 12.04)
    - split package
      - tlp: power save functions
      - tlp-rdw: radio device wizard (depends on network manager)
  * Bug Fixes
    - tlp-usblist: cleanup code, add pragmas "strict" and "warnings" (dywisor)
    - Remove setting of ext3/4 fs commit timeout (see LP #900923)

+++ 0.3.5 --- 19.12.2011 +++

  * Features
    - tlp recalibrate = fullcharge + discharge
    - tlp-stat: show thinkpad fan speed, battery model, power_now,
                i915: powersave, lvds_downclock
    - tlp-stat: usb output refactored, new subcommand tlp-usblist
    - tlp-stat: show kernel cmdline
    - added non-rfkill device ipw2100 (kristatos)

  * Bug Fixes
    - #27: tlp-stat complains about missing /proc/acpi/ibm/thermal and
           start_charge_thresh on X220/T420(s) et al. (Esc)
    - Check if start_charge_thresh, stop_charge_thresh, force_discharge
      are writable
    - #28: further mitigate race with gdm when disabling radios
           in init script (blackbox)
    - #29: tlp-stat: remove smartctl garbage output (SirVival)
    - #30: suppress dmidecode error output (kristatos)
    - iterate over all sched_powersave instances
    - i915: rc6/fbc features removed
    - Start upowerd in init script
    - #32: show error message suggesting to uninstall latop-mode-tools
           if present (Kuzoku)

+++  0.3.4 --- 05.12.2014 +++

  * Features
    - Intel graphics: rc6 power save mode, frame buffer compression

+++ 0.3.3 --- 19.09.2011 +++

  * Features
    - tlp-stat: show hdd temp SMART values (bassplayer)
    - enable/disable kernel NMI watchdog

  * Other changes
    - set_charge_thresholds(): check for undefined thresh values
    - set_extfs_commit(): skip bind mounts (Fedora sandbox)
    - zztlp: check param; show help text

  * Bug Fixes
    - #24: openSUSE 11.4/2.6.37: writing to autosuspend_delay_ms fails,
             fallback to autosuspend
    - #25: fix sched_mc_power_savings on bat
    - #26: tlp-stat complains about missing dmidecode (Sara)


+++ 0.3.2-2 --- 11.07.2011 +++

  * Bug Fix
    - #23: init.d script not linked/unlinked by install/purge (LePatron)

+++ 0.3.2 --- 04.07.2011 +++

  * Bug Fix
    - #22: runtime pm causes shutdown to fail, reboots instead (fabio)
           disabled by default

+++ 0.3.1 --- 23.06.2011 +++

  * Changes to ease porting to other distros
    - removed system utils absolute paths
    - added PATH debug output in tlp, tlp.init/tlp.upstart
    - manpages moved from debian/ to man/

  * Features, other changes
    - runtime pm (ccyx)
    - set/disable hard disk spindown timeout (enrico65, hausmarke86)
    - use power/autosuspend_delay_ms (kernel >= 2.6.38)
    - tlp-stat: now runs with root privilege only,
        show intel ssd specific smart values,
        check for pcie aspm disabled by kernel
    - bluetooth/wifi/wwan: when using rfkill, check for root privilege
        or /dev/rfkill user-writable
    - tlp/bluetooth/wifi/wwan: bash completion

  * Bug Fixes
    - #18: tlp start (ac): incorrect ouptut "started in bat mode"
           fixed (yatpu)
    - #19: tlp-stat: incorrect wifi power mgmt detection for
           wl driver (DrPaulaner)
    - #20: handle disabled pcie aspm in kernel 2.6.39 gracefully
           (Schmitti, g3eB4Y)
    - #21: battery attributes /sys/class/power_supply/BAT?/charge_*
           not recognized (tanjapetri)

+++ 0.3.0-2 --- 20.03.2011 +++

  * Bug Fixes
    - DEVICES_TO_DISABLE_ON_STARTUP (Debian): startup code fixed;
      SysV-script depends on $syslog now

*** 0.3.0 --- 18.03.2011 ***

  * Bug Fixes
    - Switch wwan off before suspend
      (workaround for kernel/network-manager quirk)

  * Features
    - Specify DISK_DEVICES with id's from /dev/disk/by-id (egalus)
    - tlp diskid: show disk id's
    - DISK_IOSCHED: set i/o scheduler (egalus)
    - PCIe ASPM
    - Do not set START_CHARGE_THRESH on tp_smapi-capable ThinkPad Edge
    - SCHED_POWERSAVE: cpu/sched_*_power_savings
    - Set radeon clock speed via /sys/class/drm/card*/device/power_profile

  * Packaging
    - Move startup code from upstart back to init.d
    - Move symlinking in /etc/pm/power.d/ to postinst/postrm
    - Move /usr/lib/tlp/ to /usr/lib/tlp-pm/

*** 0.2.8 --- 25.09.2010 ***

  * Features
    - USB_AUTOSUSPEND: exclude input devices (usbhid) w/o blacklist
    - tlp-stat: indicate drivers in usb device list
    - DISK_APM_LEVEL: support multiple devices (Stifflers_mom)
    - maverick: override pm-utils power.d/ scripts with own functionality

*** 0.2.7 --- 11.09.2010 ***

  * Bug fixes
    - usb autosuspend/tlp-stat not showing all usb devices
    - #15: tlp-stat abort w/ ipw2200 (agape)
    - #16: PHC_CONTROL written to all cpus/cores (pumpe et al.)

  * Features
    - charge thresholds: new command tlp setcharge (crishu)
    - DEVICES_TO_DISABLE_ON_STARTUP: handle bluetooth in upstart job
      (previously via desktop login)
    - set usb autosuspend for wwan devices on ifup

*** 0.2.6 --- 17.07.2010 ***

  * Bugfixes
    - tlp-stat: error checking get_ctrl_device, tlp-stat batinfo (mikar)
    - #14: delayed login window (greeter) w/ USB_AUTOSUSPEND=1
           (steveurkel, fishmac, saubaer)

  * Features
    - tlp fullcharge
    - set_charge_thresholds on startup only, not on shutdown
    - ext3/ext4 fs commit depending on MAX_LOST_WORK_SECS
    - tlp-stat: check wifi power mgmt capability
    - tlp-stat: display wifi driver

*** 0.2.5-2 --- 17.05.2010 ***

  * Bugfix/Package change
    - Conflicts: pm-utils-powersave-policy
    - powersave-policy-sata-link-power breaks pm-powersave w/ sata
      controllers in compatible mode an pata controllers (LP# 514881).
    - TLP implements same functionality as conflicting package anyway ...

*** 0.2.5 --- 03.05.2010 ***

  * Bugfixes
    - #11: excessive boottime (+40s) w/ USB_SUSPEND=1 & USB_BLACKLIST=""
    - tlp-stat: display hard disk w/o apm as "none/disabled"

  * Features
    - bluetooth/wifi/wwan: toggle (#12, thatgui)
    - changed usb autosuspend default: on
    - wifi power management re-enabled on 2.6.32 w/ some adapters
    - trace feature, output to syslog/debug (TLP_DEBUG)
    - new variable BAY_DEVICE

*** 0.2.4 --- 10.03.2010 ***

  * Bugfixes
    - #8: tlp-rf-func warnings on ThinkPad w/o bluetooth and wwan (woelffchen)
    - #9: bayoff: ultrabay power on again after resume (linrunner)
             -> script sleep.d/49bay added
  * Features
    - tlp: force battery discharge
    - run-on-ac/run-on-bat

*** 0.2.3 --- 07.03.2010 ***

  * Bugfixes
    - #7: bayoff - media not unmounted, drives != sr0 not recognized (linrunner)

*** 0.2.2 --- 04.03.2010 ***

  * Bugfixes
    - #3: cannot re-enable bluetooth after disabling (M@C)
    - #5: autoload tp_smapi (Starko)

  * Features
    - upstart integration
    - tlp-stat: error checking improved
    - poweroff ultrabay optical drive on battery
    - support for ipw2200 radio enable/disable (karlitos)

*** 0.2.1 --- 31.01.2010 ***

  * Bugfixes
    - #1: pm-suspend/pm-hibernate hang w/o wwan device (Zaphod_42)
    - #2: error messages from set_sata_link_power() w/o sata-ahci or ide (quarf)
  * tlp-stat: more info

*** 0.2.0 --- 30.01.2010 ***

  * Initial public release