Thinkpad x220 General Tweaks

tweaks_x220.md

Thinkpad x220 general

Power settings (powertop+tlp)

powertop setup

1. Install powertop

sudo pacman -S powertop

2. let powertop analyze the system (don't worry with black screens)

sudo powertop --calibrate

3. (optional) Make the systemd service and edit the new file

sudo $EDITOR /etc/systemd/system/powertop.service

[Unit]
Description=Powertop tunings

[Service]
Type=idle
ExecStart=/usr/bin/powertop --auto-tune

[Install]
WantedBy=multi-user.target

• save and enable it

sudo systemctl enable powertop

• Reboot and launch powertop : you see VM writeback is still on "bad", all others are on "good"

TLP

1. install tlp

sudo pacman -S tlp

2. edit /etc/default/tlp and add or change the following

# ------------------------------------------------------------------------------
# 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

# Dirty page values (timeouts in secs).
MAX_LOST_WORK_SECS_ON_BAT=15

# 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 / Internal battery (values in %)
START_CHARGE_THRESH_BAT0=75
STOP_CHARGE_THRESH_BAT0=90
# Ultrabay / Slice / Replaceable battery (values in %)
START_CHARGE_THRESH_BAT1=75
STOP_CHARGE_THRESH_BAT1=90
Change MAX_LOST_WORK_SECS_ON_BAT at 15 (powertop said for VM writeback) than 60. 60 make no effect.

3. Enable tlp services

systemctl enable tlp.service  
systemctl enable tlp-sleep.service

Grub Tweaks

1. edit grub.cfg

GRUB_CMDLINE_LINUX_DEFAULT="quiet i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.semaphores=1 acpi_osi=Linux"

Wifi Led (this works if you are using iwlwifi driver)

• Create a conf file with the following on /etc/modprobe.d/

options iwlwifi led_mode=1

You can do that in a oneliner in your terminal

$ echo "echo \"options iwlwifi led_mode=1\" >> /etc/modprobe.d/iwlwifi.conf" | sudo bash

Restart your computer for it to take effect

Sources

gist made by Koronen gist

comment by reddit user ot4con reddit