FAQ: Troubleshooting#

#Troubleshooting

#Braiins OS hardware issues (i2c, crc, etc)

• Make sure the device is connected to the ground at all times (case and PSU). Read the Bitmain article here.
• Check that all settings are default (Delete any value, then Save & Apply).
• Try reducing the power limit. Wait at least 12 hours for Tuner Status to show Stable. If you have a Beagle Bone Black control board, the time can be 1 or 2 days due to the single core, low speed CPU.
• Check that the cables are well connected; try swapping or replacing them and tighten the power rail screws. If you see the "Short circuit" message in the logs, a screw is loose in the power rails. Be careful, they can break, so too much force is not recommended.
• Disable the hashboard in Configuration > Performance > Override Global Hash Chain about 6 hours.
• Try with another power supply unit, problems with the PSU can also manifest as HW errors.
• Clean the device carefully, if you use liquids you should wait a few days to dry fully.

If the problem persists, it probably has a physical issue that needs repair.

Make sure to check the small ribbon cable that goes to the PSU in newer miners.

ERROR: Socket is closed This issue happens during "Installation, Upgrade, Uninstallation" through the SSH connection.

The root cause can be a corrupted file in the /tmp/ file in the miner. A simple reboot can solve the issue.

I'm not receiving Braiins OS bonus rewards Set an older slushpool.com address if you're using a Braiins OS version older than 22.08.1 to successfully return the 2% of mining fee on Braiins Pool. Old addresses will work indefinitely.

Set new braiins.com addresses otherwise.

SSH connection does not work in Braiins OS Please navigate to top menu > System > Administration and make sure the settings are the same as the picture below:

I installed Braiins OS but still I see Bitmain firmware

• Please clear your web browser cache
• Please type just IP
• Try it on another browser.
• Make sure you are running off of NAND or SD Card appropriately.

All pools URLs are dead Please check these points:

• Make sure the pool settings are correct. (URLs, userName.workername) It can be a typo issue, such as an extra space or character.
• Make sure the pool is Asicboost supported.
• Please add more pool URLs, they are failover for each other. Recommended to add all V2 and V1 URLs
• Make sure the related ports 3333, 3336, and 3337 are not blocked in your network
• Ports can be different, based on which pool they are mining.
• In some cases DNS issues can cause a similar problem, so adding a custom DNS to your device network settings can do trick, navigate to top menu > Network > Interfaces > LAN > Edit:

1. If you have DHCP Client protocol > Click on Advanced Settings > Uncheck the Use DNS servers advertised by peer and add a custom DNS like 8.8.8.8 or 1.1.1.1 in the Use custom DNS servers field.
2. If you have Static address protocol > set the Use custom DNS servers by adding 8.8.8.8 or 1.1.1.1 in the field. Keep in mind after these changes Restart BOSminer from the top-right menu > Quick Action > Restart BOSminer

Configuration page doesn't load/save correctly We identified a false/positive issue on some Antivirus and Internet Security software like Kaspersky Security Cloud.

If you see a message in top of the configuration page like:

• Unknown Error / Saving Error
• [Network] Request has been forbidden by Antivirus

please disable your Antivirus temporarily or add your mining device's IP to its whitelist.

#Hashboard troubleshooting (Sensors showing 0 value / very low hashrate)

Please follow these steps:

• Please unplug the device from the Power unit and Network then Connect the device through a Ground wire to Electric discharge.
• Make sure your device is Ground connected.
• Try lowering the power limit value for Autotuning.
• A common choice is 1280W, even lower if needed.
• Try cleaning the boards. Sometimes dust causes this issue.
• Check the cables (power and data) are firmly connected.
• Try swapping those cables or replacing them.
• Try another Power Supply Unit.
• If the problem persists you can go to Miner > Configuration and disable the board until it's replaced.
• Sometimes just disabling the board for several hours, then enabling it brings it back. Disable the hashboard in Miner > Configuration > Override Global Hash Chains about 6 hours.

#BTC Tools couldn't update pool URLs

• Make sure the device's password is correct in the BTC Tools setting.
• Make sure the device status is "success" in the list of miners.
• Make sure you typed stratum2+tcp:// or stratum+tcp:// at the beginning of the URLs.
• Make sure you typed the key for stratum V2 protocol: 9awtMD5KQgvRUh2yFbjVeT7b6hjipWcAsQHd6wEhgtDT9soosna
• Make sure there is no / at the end of URLs.

#Correct URLs sample

stratum2+tcp://stratum.braiins.com:3333/9awtMD5KQgvRUh2yFbjVeT7b6hjipWcAsQHd6wEhgtDT9soosna

Stratum V2

stratum+tcp://stratum.braiins.com:3333

Stratum V1

#Collect tcpdump logs for connection troubleshooting

SSH to the miner and run the commands below and let it run for at least 15 minutes.

tcpdump -i any -s 65535 -w /tmp/dumpv2.pcap port 3336 or port 3337

Stratum V2

tcpdump -i any -s 65535 -w /tmp/dumpv1.pcap port 3333

Stratum V1

Then you can use scp command or WinSCP software to download the collected log.

Next step: continue with the next FAQ "Run Stratum probe and collect logs for connection troubleshooting".

#C5 or T9+ Control Board Logs with Braiins OS installed

The main error:

hread 'tokio-runtime-worker' panicked at 'BUG: hashchain instantiation failed: UIO device chain1-common: cannot find uio device

To fix this issue need to UNINSTALL Braiins OS from control board.

C5

#Submit a support ticket

If your issue persists feel free to submit a support ticket.