Nvidia M60 - Ubuntu 18.04 - 450.80.02 not working with drr

Hi,

I try to use the libnvenc with ffmpeg but I get this output :
Driver does not support the required nvenc API version. Required: 11.0 Found: 10.0

I compiled the last 4.3.1 ffmpeg version using docker nvidia/cuda:11.1-devel-ubuntu18.04 and n11.0.10.0 of ffmpeg nv-codec-headers

On this page : https://docs.nvidia.com/deploy/cuda-compatibility/index.html I saw that >= 450.80.02 accept CUDA 11.1 (11.1.0).

Is it something about the M60 which is a bit old now or about the driver itself?

Thank you for your help.

ls -lht /usr/lib/x86_64-linux-gnu/libnvidia-encode.so.1

lrwxrwxrwx 1 root root 29 Oct 2 18:58 /usr/lib/x86_64-linux-gnu/libnvidia-encode.so.1 -> libnvidia-encode.so.450.80.02

My nvidia-smi output :
nvidia-smi
Tue Nov 3 15:36:49 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 Tesla M60 Off | 00000000:04:00.0 Off | Off |
| N/A 36C P0 40W / 150W | 0MiB / 8129MiB | 0% Default |
| | | N/A |
±------------------------------±---------------------±---------------------+
| 1 Tesla M60 Off | 00000000:05:00.0 Off | Off |
| N/A 27C P0 39W / 150W | 0MiB / 8129MiB | 0% Default |
| | | N/A |
±------------------------------±---------------------±---------------------+