Issue installing nvidia-cuda-toolkit

Issue installing nvidia-cuda-toolkit in order to get tensorflow with GPU support

After installing the driver (455) I Try to install nvidia-cuda-toolkit using the command :

Reading state information… Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
nvidia-cuda-toolkit : Depends: nvidia-cuda-dev (= 10.1.243-3) but it is not going to be installed
Recommends: nsight-compute (= 10.1.243-3)
Recommends: nsight-systems (= 10.1.243-3)
E: Unable to correct problems, you have held broken packages.

Environment

TensorRT Version:
GPU Type: 2080 Ti
Nvidia Driver Version: tried with 455 and 440
CUDA Version: 11.1
CUDNN Version: Issue at hand
Operating System + Version: Ubuntu 20.04
Python Version (if applicable): 3.8
TensorFlow Version (if applicable): not installed yet
PyTorch Version (if applicable): not installed yet
Baremetal or Container (if container which image + tag):

Steps To Reproduce

On Ubuntu 20.04, after removing all previous versions of nvidia-driver, I reinstalled a new one (455) using the instruction from the official Nvidia documentation.
after the installation of the driver I tried running:

sudo apt install nvidia-cuda-toolkit

which gave me the error
uilding dependency tree
Reading state information… Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
nvidia-cuda-toolkit : Depends: nvidia-cuda-dev (= 10.1.243-3) but it is not going to be installed
Recommends: nsight-compute (= 10.1.243-3)
Recommends: nsight-systems (= 10.1.243-3)
E: Unable to correct problems, you have held broken packages.

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