Installing nvidia-drm-kmod on FreeBSD
The nvidia-drm-kmod is a brand new open-source driver which is a FreeBSD port of Linux's nvidia-drm.ko file that interfaces with DRM subsystem. While Intel and AMD GPU drivers have already official drm-kmod drivers, Nvidia is still stuck with proprietary drivers until the introduction of nvidia-drm-kmod. The main purpose for this driver is to make Wayland compositor to work correctly albeit there are some issues. You can install it into your FreeBSD system instead of readily-made non-DRM Nvidia drivers, however, it is still in testing stage so expect some hiccups. Note that you will need to install outside the ports collection to make it work properly. You can also install it from ports collection, however, it needs a similar setup like here.
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1. Gathering the kernel source tree files and drm-kmod source file.
OR, you can just grab the kernel source package from installation disc or img file and paste into /usr/src directory, depending on your setup:
Example:
ii) Download the FreeBSD drm-kmod source file*:
*NOTE: If you planned to install it from the ports, skip that part
2. Setting Up Dependencies:
i) Installing linux compatibility packages and etc:
$ pkg install linux-nvidia-libs linux_base-c7 nvidia-xconfig
ii) Activating linux emulator module:
$ sysrc linux_enable="YES"
iii) Editing linux mount points in /etc/fstab, just copy and paste the line:
iv) Either mount it or just reboot it so it can be mount automatically later.
$ mount /compat/linux/proc && mount /compat/linux/sys
v) Update the ports to before building nvidia-driver 535 version
$ portsnap fetch && portsnap extract
vi) Installing the nvidia-driver version 535 first:
If nvidia-driver package is setup correctly and able to display graphics, confirm the version that you are installing by running Nvidia X Settings Manager and look at its version.
3. Editing the Makefile before starts compiling.
For some reasons at the time of writing, the nvidia-drm-kmod wil fail to install due to unable to point the exact directory of drm-kmod kernel source driver where it just points towards the root's own home directory instead of your local username directory. What you do need is to edit the Makefile inside the nvidia-driver directory and enter the full directory address of drm-kmod kernel source driver instead of holding the directory shell variables.
Open up the file with text editor:
$ nano ~/nvidia-driver/nvidia/src/nvidia-drm/Makefile
Then, search and replace the line from:
DRMKMODDIR ?= ${HOME}/git/drm-kmod
To something like this:
DRMKMODDIR ?= /home/[username]/git/drm-kmod
PS: If you're planning to build it from ports, skip that part.
3. Installing and running up nvidia-drm-kmod
METHOD 1: Building from github source:
After compiling the github source, navigate the directory and perform installation:
The nvidia-drm-kmod will be loaded automatically after installation. If you see the kernel module fail to load error message while compiling on GUI, don't worry - you will need to load it on /etc/rc.conf file to be activated later and/or replace existing drm module or nvidia-driver module with nvidia-drm:
$ sysrc kld_list+=nvidia-drm
METHOD 2: Installing from ports.
Assuming that you have already updating the ports collection, navigate to the nvidia-drm port directory:
4. Verifying the nvidia-drm-kmod installation
Setting up the graphical desktop and enable back login screen if disabled before installation. Then run the nvidia-smi command to display the GPU info inside the terminal:
$ nvidia-smi
Also, open up Nvidia X Server Settings and verify that the GPU driver is installed correctly. Note that nvidia-drm-kmod is equipped with very, very latest of Nvidia GPU driver installed and this version isn't available on official FreeBSD package nor its ports yet.
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