[CUDA Toolkit Installation] Failing at Device Node verification. No nvidia_uvm file generated

I have installed CUDA Toolkit V10.1.243 with Runfile installation method.
The installation failed at Device Node verification. The following /dev/nvidia* files are generated but the ‘nvidia_uvm’ file is missing.

$ ls nvidi*
nvidia0 nvidiactl nvidia-modeset

I tried running the bash script provided but that dint work.

$ sudo ls -lrt node_verification.sh *
-rwxrwxrwx 1 root root 655 Oct 26 14:30 node_verification.sh

$ sudo bash ./node_verification.sh
mknod: /dev/nvidia0: File exists
mknod: /dev/nvidiactl: File exists
modprobe: ERROR: could not insert ‘nvidia_uvm’: Unknown symbol in module, or unknown parameter (see dmesg)

As a result, tensorflow (2.3.1) package is not able to find the GPU device.
How do I fix this ? and what is this nvidia_uvm file for?

Moreover, I tried installing latest CUDA version 11.1, But had the Same issue.

----------------------System Configuration-----------------
Linux UBUNTU
x86_64
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04

Geforce GTX 1080 TI

$ nvidia-smi
Mon Oct 26 14:45:15 2020
±----------------------------------------------------------------------------+
| NVIDIA-SMI 450.80.02 Driver Version: 450.80.02 CUDA Version: 11.0 |
|-------------------------------±---------------------±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 GeForce GTX 105… Off | 00000000:0A:00.0 On | N/A |
| 35% 24C P8 N/A / 75W | 305MiB / 4036MiB | 0% Default |
| | | N/A |
±------------------------------±---------------------±---------------------+

±----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 1289 G /usr/lib/xorg/Xorg 35MiB |
| 0 N/A N/A 1856 G /usr/lib/xorg/Xorg 103MiB |
| 0 N/A N/A 2057 G /usr/bin/gnome-shell 156MiB |
±----------------------------------------------------------------------------+

nvcc -V
nvcc: NVIDIA ® Cuda compiler driver
Copyright © 2005-2019 NVIDIA Corporation
Built on Sun_Jul_28_19:07:16_PDT_2019
Cuda compilation tools, release 10.1, V10.1.243