TODO

• Hardware features matrix (WIP)
• BTRFS maintenance: btrfs balance + mail results
• Backup HDD: cron btrfs send/receive
• Encrypt filesystems
• Contribute DMI IDs:

|| LENOVO || 20HHCTO1WW || ThinkPad P51 || LENOVO || 20HHCTO1WW || SDK0J40697 WIN || LENOVO || None || LENOVO || N1UET72W (1.46 ) || 10/04/2018 

|| <nowiki></nowiki>

• Report thermal alarm while running Unigine Superposition:

thinkpad_acpi: unknown possible thermal alarm or keyboard event received

thinkpad_acpi: unhandled HKEY event 0x6031

thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-devel@lists.sourceforge.net

Hardware features

Matrix

GPUs

Display management scripts and configuration repository available on GitHub

Optimus / Prime

/etc/modprobe.d/nvidia_drm.conf

options nvidia_drm modeset=1

/boot/refind_linux.conf

# drm.rnodes=1 Render nodes for multiple GPU and displays (PRIME)

# intel_iommu=1 Enable hardware virtualization

"Boot with standard options"  "rw root=UUID=b549d30f-939e-4d74-b39d-676856e9faca drm.rnodes=1 intel_iommu=1 quiet initrd=/intel-ucode.img initrd=/initramfs-linux.img"

Energy saving

/etc/modprobe.d/i915.conf

options i915 modeset=1

options i915 semaphores=1

options i915 enable_rc6=4

options i915 enable_dc=2

options i915 enable_fbc=1

HDMI audio

Build, install and enable the nvhda module from this bug report

Touchscreen

~/.xinitrc

# Touchscreen

xinput --float Wacom\ Co.,Ltd.\ Pen\ and\ multitouch\ sensor\ Finger\ touch

xinput --float Wacom\ Co.,Ltd.\ Pen\ and\ multitouch\ sensor\ Pen\ stylus

xinput --float Wacom\ Co.,Ltd.\ Pen\ and\ multitouch\ sensor\ Pen\ eraser

        

# Map touchscreen and pen to laptop screen only

xinput map-to-output Wacom\ Co.,Ltd.\ Pen\ and\ multitouch\ sensor\ Finger\ touch eDP-1-1

xinput map-to-output Wacom\ Co.,Ltd.\ Pen\ and\ multitouch\ sensor\ Pen\ stylus eDP-1-1

xinput map-to-output Wacom\ Co.,Ltd.\ Pen\ and\ multitouch\ sensor\ Pen\ eraser eDP-1-1

Dock

Sound I/O not working.

Update 2018-08-28

Sound I/O is now working in Arch Linux. Don’t know which update brought support though…

Fans

/etc/modprobe.d/thinkpad_acpi.conf

options thinkpad_acpi fan_control=1

ThinkFan

/etc/thinkfan.conf

sensors:

  - hwmon: /sys/devices/platform/coretemp.0/hwmon/hwmon0/temp1_input  # CPU Package

  - hwmon: /sys/devices/platform/coretemp.0/hwmon/hwmon0/temp2_input  # CPU Core 0

  - hwmon: /sys/devices/platform/coretemp.0/hwmon/hwmon0/temp3_input  # CPU Core 1

  - hwmon: /sys/devices/platform/coretemp.0/hwmon/hwmon0/temp4_input  # CPU Core 2

  - hwmon: /sys/devices/platform/coretemp.0/hwmon/hwmon0/temp5_input  # CPU Core 3

  - hwmon: /sys/devices/virtual/hwmon/hwmon2/temp1_input  # pch_skylake

  - hwmon: /sys/devices/virtual/hwmon/hwmon3/temp1_input  # acpitz (ACPI CPU)

#  - hwmon: /sys/devices/virtual/hwmon/hwmon4/temp1_input  # iwlwifi

  - nvidia: 01:00.0  # nVidia GPU

  - atasmart: /dev/sda  # HDD

    correction: [10]



fans:

  - tpacpi: /proc/acpi/ibm/fan



levels:

  - [0, 0,  40]

  - [1, 32, 55]

  - [2, 54, 66]

  - [3, 65, 76]

  - [4, 75, 80]

  - [5, 78, 85]

  - [6, 82, 88]

  - [7, 85, 32767]

FIXME

Virtual hwmon path can change upon reboot and prevent thinkfan from starting. The order is determined by the modules loading order. Workaround seem to be to load modules manually in a deterministic order.

Fingerprint reader

Not supported by fprint.

Update 2020-04-02

The libfprint fork at https://github.com/nmikhailov/Validity90 offers experimental support with ongoing reverse engineering.

Install

Partitions

ESP: FAT32 1024 MiB (550 minimum Source)
BTRFS 931,51 GiB (To match the backup HDD size)
SWAP 21,36 GiB

RAID1 BTRFS SSDs
ESP backup on second disk
Second swap

Directories and subvolumes

toplevel

 +-- root subvolume (set-default) /

     +-- home directory

         +-- raph subvolume

  \-- snapshots directory

      +-- root directory

          +-- YYYY-MM-DDThh:mm:ss+02:00 (`date -Iseconds`) snapshot directory

          +-- …

      +-- raph directory

          +-- YYYY-MM-DDThh:mm:ss+02:00 (`date -Iseconds`) snapshot directory

          +-- …

Firmware bugs?

TODO: report to Lenovo support.

Workstation dock long USB detection

Using the workstation dock, boot time is painfully slow as the EFI scans USB peripherals.
Unfortunately, removing USB devices from the dock doesn’t improve performance.

Disk lock and fingerprint

When using the fingerprint scanner on boot with disk lock enabled, the first disk sometimes does not unlock.

Benchmarks

Geekbench

CPU

Linux
Microsoft Windows 10

GPU compute

Linux nVidia Quadro M2200 OpenCL
Microsoft Windows 10 Intel HD Graphics P630
Microsoft Windows 10 nVidia Quadro M2200

Luxmark

CPU+GPU
GPU

gtkperf

Launched from CLI
Fullscreen window 1920x1080
5 consecutive runs

Intel modesetting

3.62-3.74

Intel

2.72-2.80

nVidia

Single laptop screen

2.70-2.74

4 screens setup with Workstation Dock

screen 1 (DP-1): 4.11-4.67
screen 2 (DP-2 rotated 90° right): 4.80-5.41
screen 3 (DP-3): 4.91-5.69
screen 4 (eDP-1-1): 4.52-5.27