[SOLVED] "Can't start T-Rex, number of specified LHR tuning values in config doesn't match the number of GPUs" Error on AMD-NVIDIA mixed and also Dual mining on a BTC-S37

[LandStrider]

Hello. I am encountering “Can’t start T-Rex, number of specified LHR tuning values in config doesn’t match the number of GPUs” error and the answer about lhr-tune setting for all cards or setting intensity in topics on the forum and Reddit posts did not help. I still get the same error no matter what combination I tried.

I am setting up a rig on BTC-S37 for hardware health and slowly adding GPUs while testing miners and OCs. So far I have successfully set 2x RX 6700XTs and 1x 1600 Super, separated them into different miners for efficiency. I also have 1x 3060 LHR which I want to dual mine on using HiveOS. I have assigned all cards to miners, except for 3060.

I have set a flight sheet with 3 miners: TeamRed Miner for 6700XTs, NB Miner for 1600 Super, T-Rex for 3060. I have the pools, wallets, etc. for TeamRed and NB miners working:

I have also copied my T-Rex dual miner config from Windows to HiveOS miner:

The reason I am marking 3060 as “device 0” is that T-Rex miner does not see the AMD cards and allows selecting only 0 and 1 GPUs. When I try to select 3060 as card 2, it gives this error:

I have tried these example combinations and other variations of extra parameters in Flightsheet T-Rex config:

"devices":"0"
"lhr-tune": "30,0"

"devices":"0"
"lhr-tune": "30,0"

Second coin intensity: 50,0

"devices":"0"
"lhr-tune": "30,0,0,0"

"devices":"0"
"lhr-tune": "30,0,0,0"

Second coin intensity: 50,0,0,0

Similar problem with a solution I have found on pure Nvidia setups:

T-Rex Miner 0.24.5 dual mining, "Can't start T-Rex" Error with Intensity not set

All, Ran into the issue after updating and creating a dual mining flight sheet to mine ETH + RVN. If I do not set a number for “Intensity” I get the following on loop: [image] T-Rex instructions recommend not setting intensity. I have looked around and don’t quite understand what the intensity number actually does. Setting to 50 or 60 gets everything working like pre-upgrade. Looking for some advice or a fix. Does having intensity set hurt anything? Is there something else I may be doing wro…

Somehow I can’t have the pure Nvidia card setups’ dual mining solutions working for me.

Am I missing something or does this a different solution?

[LandStrider]

I have found the solution: I am an idiot and I have missed one of the basic config combinations:

"devices":"0"
"lhr-tune": "30"

Second coin intensity: 50

I did not even need to bother with trying to set other cards’ lhr tuning or intensity as stated to be optional in other forum topics.