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Update end-to-end-demo.md #112

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Nov 19, 2020
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Update end-to-end-demo.md #112

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4 changes: 4 additions & 0 deletions docs/end-to-end-demo.md
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Expand Up @@ -82,6 +82,10 @@ carry out one or the other, then continue on with the rest of the steps.
curl http://deb.debian.org/debian/pool/main/v/v4l2loopback/v4l2loopback-dkms_0.12.5-1_all.deb -o v4l2loopback-dkms_0.12.5-1_all.deb
sudo dpkg -i v4l2loopback-dkms_0.12.5-1_all.deb
```
1. Install the prerequisites of v4l2loopback: it needs to be loaded simultaneously with the other kernel module 'videodev' contained in linux-modules-extra
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@kate-goldenring kate-goldenring Nov 12, 2020 •
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Can you add this to the previous step to reduce the total number of steps, maybe editing the step to say "Install a kernel module and its prerequisites..."?

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Also, one more request. Testing this on fresh Ubuntu 20.04, package list needs to be updated and dkms installed. Can you please include these:

sudo apt update
sudo apt -y install linux-modules-extra-$(uname -r)
sudo apt -y install dkms

```sh
sudo apt install -y linux-modules-extra-$(uname -r)
```
1. Insert the kernel module, creating /dev/video1 and /dev/video2 devnodes. To create different number video devices modify the `video_nr` argument.
```sh
sudo modprobe v4l2loopback exclusive_caps=1 video_nr=1,2
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