CPU Mining Zcash (ZEC) on Ubuntu

CPU Mining Zcash (ZEC) on Ubuntu

Install dependancies:

sudo apt-get install cmake build-essential libboost-all-dev

Get code and compile:

cd ~/source
git clone -b Linux https://github.com/nicehash/nheqminer.git
cd nheqminer/cpu_xenoncat/Linux/asm/ && sh assemble.sh && cd ../../../Linux_cmake/nheqminer_cpu && cmake . && make

Here is an example mining command:

~/source/nheqminer/Linux_cmake/nheqminer_cpu/nheqminer_cpu -t 2 -l us1-zcash.flypool.org:3333 -u t1cN123qRbBXkQXKqPqq44E4cTh2a8SvwH1.YourMiner

Using SVN to backup

Some basic examples of how to use SVN as a backup system.

Install SVN:

sudo apt-get install subversion

How to create a backup:

mkdir ~/backup
cd ~/backup
mkdir yourcomputername

Copy all the files and folders you want to backup to yourcomputername:

svn import https://svn.yoursvnserver.com:9443/svn/yoursvnfolder/yourcomputername

How to add everything in the folder to SVN:

cd ~/backup
svn add --force * --auto-props --parents --depth infinity -q

How to commit everything that was saved in the backup folder:

svn commit /home/yourusername/backup/yourcomputername -m "yourcomputername backup"

Recovering Backup from SVN Server:

mkdir ~/work
cd ~/work
svn checkout https://svn.yoursvnservername.com:9443/svn/yoursvnfolder/yourcomputername

Delete missing files from an svn source folder:
Original info from: https://stackoverflow.com/questions/9600382/svn-command-to-delete-all-locally-missing-files#

cd thefoldername
svn st | grep ! | cut -d! -f2| sed 's/^ *//' | sed 's/^/"/g' | sed 's/$/"/g' | xargs svn rm

Build zcash (ZEC) wallet on Ubuntu

Build everything:

sudo apt-get install build-essential pkg-config libc6-dev m4 g++-multilib autoconf libtool ncurses-dev unzip git python zlib1g-dev wget bsdmainutils automake
mkdir ~/source
cd ~/source
git clone https://github.com/zcash/zcash.git
cd ~/source/zcash/zcutil
sudo make install

Run wallet and then stop it:

/usr/local/bin/zcashd -daemon
/usr/local/bin/zcash-cli stop

You will now see a folder ~/.zcash
Create zcash.conf in this folder that looks like this:


Now start the server again:

cd ~/source/zcash/src
./zcashd -daemon

The gen=1 turns on mining automatically.

Use the cli (command line interface) to getinfo:

./zcash-cli getinfo

ZEC update (when you need to upgrade)

cd ~/source/zcash
git pull
cd ~/source/zcash/zcutil

If you want to use the ZCash latest stable version:

This is currently: v2.0.2

I upgraded to ZCash v2.0.2

cd ~/source
mv zcash zcash_old
git clone https://github.com/zcash/zcash.git --branch v2.0.2
cd ~/source/zcash/zcutil
cd ~/source/zcash
sudo make install

Overclocking the RX 480 for the Claymore Ethereum-Decred Miner

Using Wattman, your values may have to be tweaked depending on the silicone lottery:

Memory: 2200mhz (overclocked), 975mv (underclocked)
Power Limit: +15%

This will draw 825w from the wall with 3 cards.

Stock for these cards are:

Memory: 2000mhz, 1000mv
Power Limit: 0

In the Claymore Miner config.txt:

-ethi 8
-dcri 60

I left the Core clock at stock which is defaulted to 1266 or 1288 (XFX version)

More can be done with tweaking the Core Clock, but my 850w power supply was already at 825w with 3 cards and motherboard/fans.

Installing another power supply for 3 more cards will let me tweak the numbers some more.

With the settings above, I was able to get:

ETH/ETC: 27 Mh/s (26 Mh/s on one of the cards)
DCR: 810 Mh/s (790 Mh/s on one of the cards)

Heat and Fans:

Max: 80 C
Target: 75 C

Windows 10 Claymore ETH/DCR Mining Rig using the RX 480 GPU

This build deals with setting up Windows 10 to mine Ethereum and Decred, using the RX 480 GPU.

Install Windows 10 x64
Install the latest AMD Radeon Crimson Drivers


Crimson Edition 16.7.3 (Main installer, run this.)

After Crimson is installed, then do an update within Crimson. You will then be at “Crimson Edition 16.8.3” (or later)
Install AwesomeMiner


Configure Claymore ETH/DCR

New Miner Wizard
Example of config.txt for mining ETC (Ethereum Classic)

-r 1
-ethi 8
-dcri 60

-etha 0
-mode 0

-gser 2

### ETC ########################################
-epool us1-etc.ethermine.org:4444
-ewal 0xBAf5706B333F709211Ab5A2A5669970A55385934.YourMinerName
-esm 0
-epsw x
-allpools 1
-allcoins 1

### DCR ########################################
-dpool stratum+tcp://dcr.suprnova.cc:2252
-dwal YourUserName.YourMinerName
-dpsw YourPassword

Example of config.txt for mining ETH (Ethereum)

-r 1
-ethi 8
-dcri 60

-etha 0
-mode 0

-gser 2

### ETH ########################################
-epool us1.ethermine.org:4444
-ewal 0x7563A2D88F2151B659F22FAd213E3A0E6fedE943.YourMinerName
-esm 0
-epsw x
-allpools 1
-allcoins 1

### DCR ########################################
-dpool stratum+tcp://dcr.suprnova.cc:2252
-dwal YourUserName.YourMinerName
-dpsw YourPassword

Example of epools.txt

POOL: etc-eu.suprnova.cc:3333, PSW: YourPassword, WORKER: YourUser.YourMiner, ESM: 0, ALLPOOLS: 1
POOL: us1.ethermine.org:4444, PSW: YourPassword, WORKER: 0x57f57167a82da3de4e69de73d1bc9c731cdcbaf8.YourMiner, ESM: 0, ALLPOOLS: 1
POOL: us1.ethpool.org:3333, PSW: YourPassword, WORKER: 0x57f57167a82da3de4e69de73d1bc9c731cdcbaf8.YourMiner, ESM: 0, ALLPOOLS: 1

Example of dpools.txt

POOL: dcr.suprnova.cc:2252, PSW: YourPassword, WORKER: YourUser.YourMiner, ESM: 0, ALLPOOLS: 1
POOL: dcr.coinmine.pl:2222, PSW: YourPassword, WORKER: YourUser.YourMiner, ESM: 0, ALLPOOLS: 1
POOL: dcr.pool.mn:4722, PSW: YourPassword, WORKER: YourUser.YourMiner, ESM: 0, ALLPOOLS: 1

How to reboot straight into mining:

Setup Autologin In Windows.

Lock after login:
rundll32.exe user32.dll,LockWorkStation

Set Awesome Miner to start on reboot.
Set your managed miner to start on reboot.

Other Software you may want to install:
Install Chrome
Install Notepad++
Install TortoiseSVN

Other Settings you may want to adjust:

Allow Remote Access
Power Options
    Turn off display: Never
    Put Computer to sleep: Never
Auto login: netplwiz
Windows Folder defaults:
    Unhide known extensions
    Unhide system folders

Never get stuck after a windows crash. Run this as administrator:

bcdedit /set {current} bootstatuspolicy ignoreallfailures

Remove the popup after a crash


Navigate to:
Computer Configuration/Administrative Templates/Windows Components/Windows Error Reporting

Double click on "Prevent display of the user interface for critical errors"

Set to Enabled

Power Considerations for the r9 280x

I would allocate about 350w for each r9 280x card if you’re planning heavy overclocking.

350 * 3 = 1050 watt
350 * 6 = 2100 watt

Don’t forget about your motherboard, CPU, fans… so the one that is running these things and the 3 GPU’s should consider another 200-300 watts for that PSU:

So 750w power supply would run one card as well as the motherboard, cpu, hard drive, all fans.

So let’s go more conservative and have 4 GPU’s (will probably run cooler too):
350 * 2 = 700
350 * 4 = 1400

The setup for this would be 2 x 850w = 1700 w and will give you plenty of room for peripherals.

Running Your Own Decred PoS (Proof of Stake) Wallet

Running Your Own Decred PoS (Proof of Stake) Wallet

If you have hundreds or thousands of DCR (or just want to experiment), you may consider running your own Decred PoS Wallet.

Summary of things to consider:

  • Each ticket costs a certain amount of DCR to purchase.
  • Your DCR funds may be locked for an average of 1 month and up to 4 months.
  • You have a 99% chance that you will earn a reward before the 4 month expiration.
  • If your ticket gets picked, you will get the reward, plus the cost of the ticket, minus the transaction fee.
  • If your ticket does NOT¬†get picked or if it gets picked while your wallet is offline or locked, you will get the cost of the ticket back minus the transaction fee.

More detailed info will follow, but let’s start with how to enable your current wallet to start Decred PoS mining.

Here is a standard enablestaking command:

dcrwallet -u YourUserName -P YourUserPassword --enablestakemining --ticketmaxprice=10

A good place to check what you should set the ticketmaxprice would be at: https://dcrstats.com/

Now unlock your wallet without a time limit:

dcrctl -u YourUserName -P YourUserPassword --wallet walletpassphrase "Your TOP SECRET Passphrase Here" 0

To see your current stake info:

dcrctl -u YourUserName -P YourUserPassword --wallet getstakeinfo

Here you will also see the difficulty, which is how many DCR each ticket currently costs.

Using cgminer with Bitmain Antminer U3 on Ubuntu

I decided to move my USB Antminer U3’s to an old laptop, to free up my windows machine for important stuff like games.

First make sure you have the necessary libraries:

sudo apt-get install build-essential autoconf automake 
sudo apt-get install libtool pkg-config libcurl3-dev libudev-dev
sudo apt-get install libc6 libcurl3-gnutls libjansson4
sudo apt-get install libncurses-dev

Download the latest cgminer:

mkdir ~/source
cd ~/source
git clone https://github.com/ckolivas/cgminer.git
cd cgminer
CFLAGS="-O2 -Wall -march=native" ./configure --enable-icarus

Since cgminer needs access to the usb ports, you need to run it as root:

sudo ~/source/cgminer/cgminer --au3-volt 800 --au3-freq 237.50 -o stratum+tcp://hashpower.co:3333 -u YOUR_USERNAME_HERE_OR_BTC_ADDRESS -p c=BTC

Overclocking the R9 280x on Ubuntu

Well, I thought I would run some tests to see if I could get more performance from this card.

First of all DO THIS AT YOUR OWN RISK, you have been warned…

My Test Scenario:
AMD Radeo R9 200 Series
Specifically: R9 280x
OS: Ubuntu 14.04 LTS
cgminer version 3.7.2
cgminer intensity: 5

First some setup if needed:

sudo amdconfig --initial --adapter=all
sudo reboot

How to update your clock and memory:

Enable overdrive, and set the clock.

amdconfig --od-enable
amdconfig --odsc=1000,1500

Where 1000 is the spot for you clock, and 1500 is the spot for your memory. These are the default settings for the R9 280x.

To check your current settings and temperature:

amdconfig --odgc --adapter=all
amdconfig --odgt --adapter=all

Hint: put commands above in a gpu_info script and have it watched, or put it in the startup:

watch ./gpu_info
gnome-terminal  --geometry=63x13+1140+40 -e 'watch ~/bin/gpu_info'

Here is how my test went:

Core Memory GH/s  Temp     Notes
---- ------ ----  ----     -----
1000 1500   1.127 69.00 C  Default Core/Memory
1000 500    1.127 71.00 C  Underclocked Memory
1050 500    1.183 71.00 C
1100 500    1.255 72.00 C
1150 500    1.300 73.00 C
1200 500    1.345 74.00 C  Last stable core clock
1250 500    ????? ???????  Slowed down, then GPU shut down

Now that I have a stable core clock of 1200, I will experiment with the
cgminer intensity. I would let it run for about 30 minutes or more to
make sure it really is stable.

Then save the settings:

aticonfig --odsc=1200,500
aticonfig --odcc

Here are my results when messing with cgminer intensity:

Core Memory GH/s Temp Load Intensity Notes
---- ------ ---- ---- ---- --------- -----
1200 500 1.514 77.00 C 95% d Dynamic intensity is the safest and where I keep it.
1200 500 1.412 76.00 C 90% 6
1200 500 1.487 76.00 C 94% 7
1200 500 1.512 77.00 C 95% 8
1200 500 1.545 77.00 C 97% 9
1200 500 1.565 77.00 C 98% 10
1200 500 1.576 77.00 C 99% 11
1200 500 1.582 77.00 C 99% 12
1200 500 1.585 77.00 C 99% 13
1200 500 1.587 77.00 C 99% 14 Fastest, but desktop may become sluggish.

So for me, I keep it at 1200 core clock, 500 memory clock, and intensity d. There are diminishing returns for increasing the intensity, but may be worth it for some people.

Install opencl and drivers for Radeon R9 280x on Ubuntu

To get the drivers set up for your AMD card do the following.

System Settings/Software & Updates/Additional Drivers
Select fglrx-updates

If you have multiple GPU’s but only the first is being recognized, you may need to disable the GPU Manager. You will need to edit this file:

sudo nano /etc/default/grub

Change this line to:


Now update grub and reboot:

sudo update-grub
sudo reboot

To list your GPU’s:

lspci | grep VGA
amdconfig --list-adapters

Now initialize your GPU’s:

sudo amdconfig --initial --adapter=all
sudo reboot

Now run clinfo:


You should see your version of opencl:

Device OpenCL C version: OpenCL C 1.2

Now go ahead and set up cgminer, instructions are here:

Notice: The info below is outdated, I’m now using the Ubuntu GUI to grab the additional drivers.

Find the drivers on the official AMD website:

Click on your version of Ubuntu (ex: Ubuntu 14.04 LTS 64-bit)

Download all the fglrx files for your version. There should be 4 of them.

Get to your download directory and copy them somewhere safe like:

mkdir ~/AMD_Driver_packages
cd ~/Downloads
cp *.deb ~/AMD_Driver_packages
cd ~/AMD_Driver_packages

I had to make sure my system had the dependencies

sudo apt-get -f install

Now that you are in the folder you will be doing all your installing from, go ahead and install:

sudo dpkg -i fglrx-core_15.302-0ubuntu1_amd64_ub_14.01.deb
sudo dpkg -i fglrx_15.302-0ubuntu1_amd64_ub_14.01.deb
sudo dpkg -i fglrx-dev_15.302-0ubuntu1_amd64_ub_14.01.deb
sudo dpkg -i fglrx-amdcccle_15.302-0ubuntu1_amd64_ub_14.01.deb

Now reboot

sudo reboot

Check that everything is installed correctly:

sudo dpkg -l fglrx fglrx-core fglrx-amdcccle fglrx-dev

Now run clinfo:


You should see your version of opencl:

Device OpenCL C version: OpenCL C 1.2

Now go ahead and set up cgminer, instructions are here: