PhoenixMiner 5.3b on Linux no control for clock and voltage

I have rig 8 x rx580 and trying to move from windows to linux.

I have installed Ubuntu 15.04.5 HWE with kernel 5.6.0 and  amdgpu-pro-20.20-1089974-ubuntu-18.04. (./amdgpu-pro-install -y --opencl=pal,legacy --headless)

It seems that miner can not control clock and voltage

sudo ./PhoenixMiner -tt 59 -gpus 1  -mode 1 -hstats 2 -cclock 1180 -mclock 2150 -cvddc 900 -mvddc 900 -pool us2.ethermine.org:4444 -wal 0x39e987c72d3b35da03ba9aca26a9e9f91c16c04c.Rig001
Phoenix Miner 5.3b Linux/gcc - Release build
--------------------------------------------

No CUDA driver found
OpenCL driver version: 20.20-1089974-ubuntu-18.04
Available GPUs for mining:
GPU1: Radeon RX 580 Series (pcie 1), OpenCL 1.2, 8 GB VRAM, 36 CUs
Eth: Loading pools from epools.txt
Eth: the pool list contains 6 pools (1 from command-line)
Eth: primary pool: us2.ethermine.org:4444
Starting GPU mining
GPU1: fan PWM control mode 2, min 0, max 255
GPU1: set auto fan: 59C target temp (min fan 0, max fan 100)
Eth: Connecting to ethash pool us2.ethermine.org:4444 (proto: EthProxy)

...
Eth speed: 26.297 MH/s, shares: 0/0/0, time: 0:00
Eth: New job #39a2a3b1 from us2.ethermine.org:4444; diff: 4000MH
GPU1: 42C 0% 107W
GPU1: cclock 1340 MHz, cvddc 1131 mV, mclock 2000 MHz
GPUs power: 107.1 W

...
Eth: New job #8993d4fa from us2.ethermine.org:4444; diff: 4000MH
Eth speed: 28.457 MH/s, shares: 1/0/0, time: 0:02
GPU1: 59C 69% 118W
GPU1: cclock 1340 MHz, cvddc 1143 mV, mclock 2000 MHz
GPUs power: 118.2 W


What is wrong? any help/advice would be greatly appreciated