Configure X & graphics for Lenovo Yoga 3 14

• DualBoot
• X

1. The Intel driver should work just fine.
2. It is still possible to control brightness.

Lenovo Yoga 3 14 has 2 graphic cards natively: Nvidia GeForce 940M and Intel HD Graphics 5500 (Broadwell). Here's the output of pciconf -lv | grep display -B 3 -A 1:

vgapci0@pci0:0:2:0:	class=0x030000 card=0x391717aa chip=0x16168086 rev=0x09 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HD Graphics 5500'
    class      = display
    subclass   = VGA
--
vgapci1@pci0:3:0:0:	class=0x030200 card=0x391717aa chip=0x134710de rev=0xa2 hdr=0x00
    vendor     = 'NVIDIA Corporation'
    device     = 'GM108M [GeForce 940M]'
    class      = display
    subclass   = 3D

I tested the X server with the dwm window manager. Here are the steps to set it up:

• Install x11/dmenu, x11/sterm and x11-wm/dwm
• echo exec dwm > ~/.xinitrc
• Now test the X server executing by startx

It is now supported as of FreeBSD 12.0-CURRENT r323983. (Brightness control finally works!)

I'm using the latest FreeBSD 12.0-CURRENT r323983. It works on FreeBSD 11-STABLE. Remember to update your kernel, userland and ports before following the steps below:

1. Install graphics/drm-next-kmod.
2. Add kld_list="/boot/modules/i915kms.ko" to /etc/rc.conf.

• Backlight could be controlled using intel-backlight.
• The brightness control keys work if you load the acpi_video(4) kernel module. They are too precise however (it takes too long to make a significant brightness change using those keys).

• For some reason xbacklight does not work:

$ xbacklight
No outputs have backlight property

• Getting "kldxref: error while reading //boot/modules/i915_bxt_huc_ver01_07_1398_bin.ko: Bad address" on drm-next-kmod update from g20180117_2 to g20180117_3 (github.com/freebsd/freebsd-base-graphics)
• HDMI external monitor doesn't work with drm-next-kmod on Intel HD Graphics 5500 (github.com/freebsd/freebsd-base-graphics)

Really slow and laggy.

I ran X -configure (which is not recommended by the handbook) and copied the resulting file over to /usr/local/etc/X11/. Then I deleted the other non-VESA device from the file.

I guess that the following configuration is sufficient for X to run using VESA (put those into some xorg.conf):

Section "Device"
	Identifier  "Card0"
	Driver      "vesa"
	BusID       "PCI:0:2:0"
EndSection

It works but it doesn't support some features like brightness control.

VESA is slow and I could get Nvidia to work, so before some recent changes to the kernel (as of more or less FreeBSD 12.0-CURRENT r323983: Mon Sep 25 08:04:12 CEST 2017) I used the SCFB driver for a while. Now it is not necessary as the support for the Intel driver is already available in FreeBSD 12.0-CURRENT and probably in FreeBSD 11.1-RELEASE (at least that's what the graphics/drm-next-kmod port requires).

Add this to xorg.conf and make sure there are no other files configuring X:

Section "Device"
	Identifier  "Card0"
	Driver      "scfb"
	BusID       "PCI:0:2:0"
EndSection

• UEFI Xorg (EE) no screens found on FreeBSD 11.0-RELEASE: https://lists.freebsd.org/pipermail/freebsd-stable/2017-January/086560.html
• System Console Frame Buffer (SCFB): Graphics/SCFB

Black screen with a white cursor in the upper left corner (broken and unusable).

Here's what I've tried.

1. Install x11/nvidia-driver.
2. Make sure to delete /etc/X11/xorg.conf, /usr/local/etc/X11/xorg.conf and any files in /usr/local/etc/X11/xorg.conf.d/.
3. Add the following to /etc/rc.conf:

kld_list="i915kms drmn nvidia-modeset"
hald_enable="YES"
dbus_enable="YES"
linux_enable="YES"

1. Add the following to /usr/local/etc/X11/xorg.conf.d/10-nvidia.conf

Section "Device"
	Identifier "NVIDIA Card"
	VendorName "NVIDIA Corporation"
	Driver "nvidia"
	BusID "PCI:3:0:0"
EndSection

As a result I got:

[   242.977] (EE) No devices detected.
[   242.977] (EE)
Fatal server error:
[   242.977] (EE) no screens found(EE)
[   242.977] (EE)
Please consult the The X.Org Foundation support
    at http://wiki.x.org
for help.
[   242.978] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   242.978] (EE)
[   242.985] (EE) Server terminated with error (1). Closing log file.

I've tried to solve it with:

• X -configure and some additional tweaking the xorg.conf file;
• both nvidia-xconfig and nvidia-xconfig --enable-all-gpus;

but nothing worked.

From what I read, the nvidia driver is supporting this card. I've got no idea what went wrong.

• NVIDIA Accelerated FreeBSD Graphics Driver README and Installation Guide: Installation and Configuration Instructions: Chapter 6. Configuring X for the NVIDIA Driver (cn.download.nvidia.com)
• Solved (EE) No devices detected. (EE) no screens found(EE) (FreeBSD Forums)
• HOWTO: Setup Xorg with NVIDIA's driver (FreeBSD Forums)
• FreeBSD Handbook: Chapter 5. The X Window System (5.4. Xorg Configuration)

• Missing GL support on FreeBSD with Intel graphics.