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HiveOs sets minimum fan speed to the Tahiti cards

I have 3 r9 280x GPUs. Fan speeds flashed in BIOS.

I used old version of HiveOs earlier and all worked good.
HiveOs didn’t affect fan speeds and RPM values ​​were taken from bios.

But after upgrade fan speed has been set to a minimum:

Also I have an error now:

AMD OC failed:

Detected 5 AMD cards
CORE_CLOCK = 0 0 1000 1130 0
CORE_STATE =
CORE_VDDC = 0 0 830 850 0
MEM_CLOCK = 0 0 1850 2150 0
MEM_STATE =
FAN =
REF =

=== GPU 0, 01:00.0 /sys/class/drm/card0 ===

=== GPU 1, 02:00.0 /sys/class/drm/card1 ===

=== GPU 2, 03:00.0 /sys/class/drm/card2 ===

How to resolve that?

I have 5 of these cards that I would like to get hashing. what was the previous version that you had that worked on your Tahiti cards?

I have seen info indicating that these exports will help (in this forum), and i have used them in straight ubuntu with good results, but i have not been able to properly enter them to hiveos.
export GPU_FORCE_64BIT_PTR=1
export GPU_MAX_HEAP_SIZE=100
export GPU_MAX_ALLOC_PERCENT=100
export GPU_SINGLE_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1
sudo sysctl -w vm.nr_hugepages=256

for the record
[email protected]:~$ uname -a
Linux mineshaft 5.0.21-hiveos #1 SMP Mon Jun 17 17:34:36 +04 2019 x86_64 x86_64 x86_64 GNU/Linux
[email protected]:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION=“Ubuntu 18.04.3 LTS”
[email protected]:~$

these are the cards im tryin to get going.
[email protected]:~# lspci | grep -i vga
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii XT / Grenada XT [Radeon R9 290X/390X]
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti PRO [Radeon HD 7950/8950 OEM / R9 280]
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti PRO [Radeon HD 7950/8950 OEM / R9 280]
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X]

I am running a b250 mobo with 19 slots, of which it seems you can run about 13. I run all amd so - apparently you can put 8 nvidia cards into the board as well, but i have not tried that yet cuz i dont have any.

update - these cards are in a seperate rig now - not on the b250 anymore. still not hashing yet either but i feel positive!

def