V4l2loopback troubleshooting(jetson xavier)

 

sudo su
cd /usr/src/linux-headers-4.9.140-tegra-ubuntu18.04_aarch64/kernel-4.9
## dropped in latter release##make modules_prepare
mkdir v4l2loopback
git clone https://github.com/umlaeute/v4l2loopback.git v4l2loopback
cd v4l2loopback && git checkout -b v0.10.0
make
## if the sequence above fails - adopt the line: make -C /lib/modules/4.9.140-tegra/build M=`$pwd` modules
## make -C /lib/modules/`uname -r`-tegra/build M=/usr/src/v4l2loopback modules_install

make install
apt-get install -y v4l2loopback-dkms v4l2loopback-utils
modprobe v4l2loopback devices=1 video_nr=2 exclusive_caps=1
echo options v4l2loopback devices=1 video_nr=2 exclusive_caps=1 > /etc/modprobe.d/v4l2loopback.conf
echo v4l2loopback > /etc/modules
update-initramfs -u