Gpu not working

cpu : xeon 8 cores
ram : 32G
gpu : nvidia gtx 1060 6g
gpu driver version : 435

When I type the command “lotus-storage-miner pledge-sector”

It just using cpu not gpu.

when type “lotus-bench”
It use gpu.

I am not making any progress here.

what’s wrong?

I did all steps in https://lotu.sh/en+install-lotus-ubuntu
lotu.sh/en+join-testnet
lotu.sh/en+mining
lotu.sh/en+lotus-seal-worker

Did I miss anything?

Please I need help.

thank you.

if you need more info,I’ll give you all the information.