Lenovo ThinkPad P52

Hardware	PCI/USB ID	Working?
GPU (Intel)		Yes
GPU (Nvidia)		Yes
Wireless		Yes
Bluetooth	8087:0aaa	Yes
Audio	10de:0fb9	Yes
Touchpad		Yes
Webcam	5986:2113	Yes
Card reader	10ec:525a	Yes
Fingerprint reader	06cb:009a	No

Lenovo P52 はクアッドまたはヘックスコアの 第8世代 Intel プロセッサ搭載のラップトップです。

インストールの前に

Arch on a Lenovo P52 is an amazing combination.

Before you begin: There are some possible "BIOS BRICKING" settings. The settings are not directly related to installing Arch, but most Arch users will make configuration changes in the same areas where these settings can be modified. So I'm offering this warning here.

Make sure to update your BIOS to V1.17 or later current is v1.24 as of March 2019. Earlier versions of the BIOS may become inoperable if you select certain settings:

1) Hybrid vs discrete graphics - https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/P52-won-t-start-after-change-to-only-discrete-graphic-card/m-p/4265065

2) Thunderbolt 3 Support - https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/Lenovo-P52-bricked-by-selecting-BIOS-thunderbolt-support-for/td-p/4207538?page=12

Note: You can update the BIOS using the bootable (CD) update option from Lenovo, or just update the BIOS using the pre-packaged Windows installation and software and then continue with Arch installation once the BIOS is updated.

グラフィックス

このラップトップには、NVIDIA チップに直接配線された外部ディスプレイポートがあります。大まかに言うと、これは外部ディスプレイを使用するには、専用 GPU を有効にする必要があるという事です。幸い、統合グラフィックスと専用グラフィックスを動的に切り替えることは可能ですが、これは modesetting ドライバではなく Intel DDX ドライバ xf86-video-intel を使用することによってのみ可能です。

ラップトップは、ハイブリットグラフィックスまたは専用グラフィックスのみの 2 つのモードのうちの 1 つで使用できます。

統合 Intel UHD 630 GPU（パイブリットグラフィックスの一部）を使用するには、mkinitcpio のモジュールとして、i915 モジュールを initramfs に追加する必要があります。これを行うには /etc/mkinitcpio.conf で次のように設定します。

/etc/mkinitcpio.conf

...
MODULES=(i915)

Failure to add the above will leave you stuck when trying to load the initramfs and your system will not be able to boot.

It might be possible to make do without the module above by using the Dedicated Graphics only (this can be done by changing the setting in UEFI).

bumblebee とプロプライエタリドライバ

With this setup the integrated GPU is used by default but some applications can be rendered on the discrete GPU with the optirun or primusrun launchers. See Bumblebee for detailed instructions. The lack of proper v-sync support means that with this method applications rendered on the discrete GPU exhibit tearing. There is also some overhead introduced as a result of moving data inefficiently between the discrete and integrated GPUs, but the Nvidia GPU performs much better than it does with Nouveau.

To get this working you will need bumblebee, bbswitch, nvidia and xf86-video-intel.

Then set the following configuration files.

/etc/X11/xorg.conf.d/intel.conf

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "intel"
    Inactive       "nvidia"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "nvidia"
    Driver         "dummy"
    BusID          "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier     "nvidia"
    Device         "nvidia"
EndSection
 
Section "Screen"
    Identifier     "intel"
    Device         "intel"
    Monitor        "Monitor0"
EndSection

Section "Device"
    Identifier  "intel"
    Driver      "intel"
    Option      "TearFree" "true"
    Option      "DRI" "3"
    BusId       "PCI:0:2:0"
EndSection

(you probably already have one of these so adjust/add as needed - the dummy device at the end is essential!!):

/etc/bumblebee/xorg.conf.nvidia

Section "ServerLayout"
    Identifier  "Layout0"
    Option      "AutoAddDevices" "false"
    Option      "AutoAddGPU" "false"

    # Inventions
    Screen      0 "nvidia"
    Inactive    "intel"
EndSection

Section "Device"
    Identifier  "DiscreteNvidia"
    Driver      "nvidia"
    VendorName  "NVIDIA Corporation"
    BusID "PCI:1:0:0"
    Option "ProbeAllGpus" "false"

    Option "NoLogo" "true"
    Option "UseEDID" "true"
    Option "AllowEmptyInitialConfiguration"
EndSection

Section "Device"
    Identifier "intel"
    Driver "dummy"
    BusID "PCI:0:2:0"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
EndSection

At this stage, restart your machine. Then you should be able to run applications on the GPU as you normally would with optirun, e.g., optirun glxgears. If you want to use the external displays you need to keep your GPU on by running an app on optirun and then running intel-virtual-output -f (this will stay running and binds the external display ports to virtual outputs that you can use). At this stage you should be able to see and use the external ports.

タッチパッド

Linux カーネルをアップグレードすると、タッチパッドとトラックポイントが機能しなくなるという問題が発生することがあります。カーネルパラメータ psmouse.elantech_smbus=0 で起動すると修正されるようです。FS#59714#comment174924