Lenovo ThinkPad P51

TODO

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

|| 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¶

Device	Model	Specs	Status	Modules
CPU	Intel Xeon E3-1535M v6	3.1 GHz / 4.2 GHz 4 cores / 8 threads 8 MB SmartCache	Working	N.A.
Imaging Unit/Gaussian Mixture Model (GMM)	In CPU		?	?
ECC memory	Samsung M474A2K43BB1-CRC	260pin SODIMM DDR 4 2400MHz 16 GB (× 4 - 64 GB total)	Working	N.A.
Screen	BOE NV156FHM-N42	15.6" 16:9 1920×1080 IPS LED	Working	N.A.
Backlight control			Working	N.A.
GPU (Intel)	Intel HD Graphics P630 (CPU integrated)	350 MHz / 1.10 GHz 1.7 GB DirectX 12 OpenGL 4.4 OpenCL 2.0	Working	i915
GPU (nVidia)	GM206GLM [Quadro M2200 Mobile]	1024 CUDA cores 4 GB GDDR5 128-bit 55W OpenGL 4.5 DirectX 12 (Hardware Feature Level 12_1) Shader Model 5.0 DisplayPort 1.2 FP32 precision	Working	nvidia
HDMI		1.4b	Working	nvhda (audio)
Mini DisplayPort		1.2a	Working	thunderbolt
Thunderbolt 3 / USB 3.1			Working	?
LAN	Intel I219-LM	1 Gbs	Working	e1000e
WLAN (Wi-Fi)	Intel Wireless 8265	802.11ac M.2	Working	iwlwifi
WWAN	Qualcomm Snapdragon X7 LTE-A (Sierra Wireless EM7455)	4G LTE-A M.2	Working	cdc_mbim
GPS	In WWAN device	GNSS (GPS, GLONASS, Beidou, Galileo)	TBD
Bluetooth	Intel Wireless 8265	4.2 (Maybe software limited to 4.1?)	Working	btusb
Audio	Intel (Realtek ALC3268 codec)		Working	snd_hda_intel
NVMe (M.2 SSD)	Samsung NVMe SSD Controller SM961/PM961	1 TB (× 2)	Working (Needs accessories)
SATA (HDD)	Western Digital WDC WD10SPCX-60K	1 TB 2.5" wide 7mm high	Working (Needs accessories)
Keyboard	Chicony		Working	atkbd
Function/Multimedia keys			Working	N.A.
TrackPoint	Chicony		Working	psmouse
Touchpad	Synaptics	Mylar surface	Working	psmouse
Touchscreen	Wacom	Capacitive multi-touch 10-fingers	Working	wacom
Active Pen	Wacom		Working	wacom
Webcam	SunplusIT controller?	720p (1280×720) Fixed focus	Working	uvcvideo
Media card		MMC, SD, SDHC, SDXC UHS-II	Working
Express Card	Realtek RTS525A	/34	Working	rtsx_pci
Smartcard Reader	Alcor Micro AU9540		Working
USB 3.0			Working
Power management			Working	thinkpad_acpi
TPM		2.0	Not Working (No TPM 2.0 toolchain on GNU/Linux just yet. See James Bottomley’s blog post)	tpm
Fingerprint reader	Validity Sensors, Inc.		Partially Working	libfprint fork (See below)
Color calibrator	X-Rite Pantone Color Sensor		Not Working
UEFI flash			Not Working
Suspend to RAM (Standby)			Working
Suspend to disk (Hibernate)			Working
Battery		96 Wh	Working

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.

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]

Fingerprint reader¶

Not supported by fprint.

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?¶

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¶

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