DeepStream - Unable to locate 3 TensorRT nvinfer Packages

Hi

I’ve followed this guide to install DeepStream but when I reach the part of installing TensorRT, I encounter an error after trying to execute this command:

$ sudo apt-get install libnvinfer8=8.0.1-1+cuda11.3 libnvinfer-plugin8=8.0.1-1+cuda11.3 libnvparsers8=8.0.1-1+cuda11.3 libnvonnxparsers8=8.0.1-1+cuda11.3 libnvinfer-bin=8.0.1-1+cuda11.3 libnvinfer-dev=8.0.1-1+cuda11.3 libnvinfer-plugin-dev=8.0.1-1+cuda11.3 libnvparsers-dev=8.0.1-1+cuda11.3 libnvonnxparsers-dev=8.0.1-1+cuda11.3 libnvinfer-samples=8.0.1-1+cuda11.3 libnvinfer-doc=8.0.1-1+cuda11.3

The error for the 3 packages is :

E: Unable to locate package libnvinfer-bin
E: Unable to locate package libnvinfer-samples
E: Unable to locate package libnvinfer-doc

How can I fix it so that I can finally install DeepStream?
And I don’t want to use any containers. I just want to find out what is wrong with my system. I have freshly installed Ubuntu 18.04 only to install DeepStream and I keep getting this error.

Thanks

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It seems I’m not the only one with this problem: Tensorrt 8.0 installation

But the question is WHY does it happen?

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Going to the folder /var/nv-tensorrt-repo-ubuntu1804-cuda11.3-trt8.0.1.6-ga-20210626 I can see the following files and packages:

7fa2af80.pub
libnvonnxparsers-dev_8.0.1-1+cuda11.3_amd64.deb
graphsurgeon-tf_8.0.1-1+cuda11.3_amd64.deb
libnvparsers8_8.0.1-1+cuda11.3_amd64.deb
libcudnn8_8.2.1.32-1+cuda11.3_amd64.deb
libnvparsers-dev_8.0.1-1+cuda11.3_amd64.deb
libcudnn8-dev_8.2.1.32-1+cuda11.3_amd64.deb
onnx-graphsurgeon_8.0.1-1+cuda11.3_amd64.deb
libnvinfer8_8.0.1-1+cuda11.3_amd64.deb
Packages.gz
libnvinfer-bin_8.0.1-1+cuda11.3_amd64.deb
python3-libnvinfer_8.0.1-1+cuda11.3_amd64.deb
libnvinfer-dev_8.0.1-1+cuda11.3_amd64.deb
python3-libnvinfer-dev_8.0.1-1+cuda11.3_amd64.deb
libnvinfer-doc_8.0.1-1+cuda11.3_all.deb
Release
libnvinfer-plugin8_8.0.1-1+cuda11.3_amd64.deb
Release.gpg
libnvinfer-plugin-dev_8.0.1-1+cuda11.3_amd64.deb
tensorrt_8.0.1.6-1+cuda11.3_amd64.deb
libnvinfer-samples_8.0.1-1+cuda11.3_all.deb
uff-converter-tf_8.0.1-1+cuda11.3_amd64.deb
libnvonnxparsers8_8.0.1-1+cuda11.3_amd64.deb

It seems the 3 packages that I’m looking for ARE located in this folder but somehow Ubuntu can’t find them:

libnvinfer-bin
libnvinfer-samples
libnvinfer-doc

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