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PROBLEM RX 470 sapphire nitro plus on Ubuntu 16.04 Genoils/Ethermine

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Hey all, I've got 5 rigs of 6 cards each right now. 4 rigs are running fine: 14.04 LTS w/ r9 390s via ethermine/genoils

However, after not being able to run rx 470 cards with this set up, I switched to 16.04, which I've read here that people have had success with. Unfortunately, I'm having only problems. After a clean install of 16.04, I download the most recent amdgpu-pro drivers from the amd website, follow the instructions to install them. Restart, everything is fine so far. I want to run this rig with Genoils and ethermine (like my other rigs), so I follow those instructions. When I do that, it is unable to download the package: libjson-rpc-cpp-dev. However, I found an answer here: https://github.com/Visgean/cpp-ethereum/commit/3c578d74d91dd56443c5e44068ecb31fc66e4d73. Turns out the package was renamed to libjsoncpp-dev, so I downloaded that package instead.

ANYWAY
I could use a hand troubleshooting this problem. When I follow the genoils instructions on ethermine, and execute my output is as follows:

USER:~$ bash ethminer-pool.sh
Genoil's ethminer 0.9.41-genoil-1.1.7
=====================================================================
Forked from github.com/ethereum/cpp-ethereum
CUDA kernel ported from Tim Hughes' OpenCL kernel
With contributions from nicehash, nerdralph, RoBiK and sp_

Please consider a donation to:
ETH: 0xeb9310b185455f863f526dab3d245809f6854b4d

[OPENCL]:Found suitable OpenCL device [Ellesmere] with 3221225472 bytes of GPU memory
ℹ 13:11:50|ethminer Connecting to stratum server us1.ethermine.org:4444
ℹ 13:11:50|stratum Connected to stratum server us1.ethermine.org : 4444
ℹ 13:11:50|stratum Starting farm
ℹ 13:11:50|stratum Subscribed to stratum server
ℹ 13:11:50|stratum Authorized worker 0x4C6064264d987B085e5c1297ffA0AA8BAE368b09.Pinto
ℹ 13:11:50|stratum Received new job #cee29215
ℹ 13:11:50|openclminer0 set work; seed: #21f48104, target: #0000000112e0
ℹ 13:11:50|openclminer0 Initialising miner...
ℹ 13:11:50|openclminer1 set work; seed: #21f48104, target: #0000000112e0
ℹ 13:11:50|openclminer1 Initialising miner...
ℹ 13:11:50|openclminer2 set work; seed: #21f48104, target: #0000000112e0
ℹ 13:11:50|openclminer2 Initialising miner...
ℹ 13:11:50|openclminer3 set work; seed: #21f48104, target: #0000000112e0
ℹ 13:11:50|openclminer3 Initialising miner...
ℹ 13:11:50|openclminer4 set work; seed: #21f48104, target: #0000000112e0
ℹ 13:11:50|openclminer4 Initialising miner...
m 13:11:51|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:51|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:51|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:51|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:51|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:52|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:52|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:52|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:52|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:52|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:53|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:53|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
m 13:11:53|ethminer Mining on PoWhash #cee29215 : 0.00MH/s [A0+0:R0+0:F0]
ℹ 13:11:53|stratum Received new job #ab0fa74a
[OPENCL]:Using platform: AMD Accelerated Parallel Processing
[OPENCL]:Using device: Ellesmere(OpenCL 1.2 AMD-APP (2236.5))
[OPENCL]:Using platform: AMD Accelerated Parallel Processing
[OPENCL]:Using device: Ellesmere(OpenCL 1.2 AMD-APP (2236.5))
[OPENCL]:Using platform: AMD Accelerated Parallel Processing
[OPENCL]:[OPENCL]:Using device: Ellesmere(OpenCL 1.2 AMD-APP (2236.5))
Using platform: [OPENCL]:Using platform: AMD Accelerated Parallel Processing
AMD Accelerated Parallel Processing[OPENCL]:
Using device: Ellesmere[OPENCL]:(Using device: Ellesmere(OpenCL 1.2 AMD-APP (2236.5)OpenCL 1.2 AMD-APP (2236.5)))

[OPENCL]:clCreateCommandQueue(-6)
[OPENCL]:clEnqueueWriteBuffer(-36)
[OPENCL]:clCreateCommandQueue(-6)
[OPENCL]:clEnqueueWriteBuffer(-36)
[OPENCL]:clCreateCommandQueue(-6)
[OPENCL]:clEnqueueWriteBuffer(-36)
[OPENCL]:clCreateCommandQueue(-6)
[OPENCL]:clEnqueueWriteBuffer(-36)
[OPENCL]:clCreateCommandQueue(-6)
[OPENCL]:clEnqueueWriteBuffer(-36)

The output at the very end is strange to me. Seems like it would be a gpu/driver problem as there are 5 warnings (one for each gpu)? Has anyone experienced this problem?

Edit: I've tried reinstalling the drivers and ethminer and genoils a handful of times, uninstalling and with clean installs. Same problem. Can't find anything like this on the forums.

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