My Avalon A921 is on the way

[krisgt30]

All four aucs dead though?

[1715011562]

1715011562

[1715011562]

1715011562

[NotFuzzyWarm]

Do other 921's on the same controller work? If none work on the controller could be that the controller has not been loaded with the correct firmware. A921 RasPi software is here

[krisgt30]

None work, the firmware was installed by the Canaan team via teamviewer. I do not recall which version they installed but I will check when I go back to the farm later today.

[NotFuzzyWarm]

None work, the firmware was installed by the Canaan team via teamviewer. I do not recall which version they installed but I will check when I go back to the farm later today.

A thought - did Canaan supply the USB-A to micro USB cable? If not, a very common issue with supplying your own is that many such cables are ONLY for charging and do not support data transfer because all 4 wires in them are used for power. Try using a known good data/charging cable.

[krisgt30]

Canaan supplied everything this go around. The miners, the psus, the controller, the four auc’s and all the cabling for each.

[Steamtyme]

All four aucs dead though?

Could happen but unlikely. I remember a few going out that way with 741's and 8 series I think. I haven't heard of any in a while that went out as duds.

Sorry if I missed it.

When the controller is powered on, are you able to login and see the GUI?

I read this as you have 10 of the miners set up.

Did you have them on 2 separate Auc's 5 each? Have you gone back and tried them individually maybe starting at 1 miner and trying different auc/4pin cables?

[philipma1957]

Canaan supplied everything this go around. The miners, the psus, the controller, the four auc’s and all the cabling for each.

Okay  where are you located? usa?

I have

a working power brick
 a working rasp pi
 a working 5 pin cable
 a working auc
 a working a921

it is at the new build out

I could test your

power brick
rasp pi
5 pin cable
auc
usb cord

this fri or monday as I am driving to the build out to add some m10's

if not  lets see what else we can do here.

what is the power brick you use for the rasp pi?

did you try each of the 4 usb ports on the raps pi.

do you get any connect with the a921's

I get you see the  rasp pi
I assume it does not show the a921's

[krisgt30]

Yes but unfortunately I am no longer local to you. My farm and I now reside in Michigan. I appreciate the offer though. I did not attempt to run all 10 miners yet. I only got halfway through unpacking/swapping miners before I realized that it was every single one with the problem. I do have another video call with Canaan techs tonight so I will post updates as they happen. It’s currently being powered by usb 3.0 directly connected to my server. I do have a samsung 5v 1amp spare power brick that I can use if you think the server isn’t supplying enough power. The server itself resides on a platinum 1000w ps running maybe 30% load.

When the controller is powered on the GUI is there and I can get into every submenu and make changes. It shows no active connections in its live monitoring and zero speed for fans and hashing. Canaan had me try one by one yesterday on the controller and even had me attempt to power on the miners with no wires connected (except the power supply) all attempts yielded the same result. No signs of life. No way to actually get into them. I was given four auc’s for room for growth after my next purchase after Chinese New Year when their next models are released.

[philipma1957]

Yes but unfortunately I am no longer local to you. My farm and I now reside in Michigan. I appreciate the offer though. I did not attempt to run all 10 miners yet. I only got halfway through unpacking/swapping miners before I realized that it was every single one with the problem. I do have another video call with Canaan techs tonight so I will post updates as they happen. It’s currently being powered by usb 3.0 directly connected to my server. I do have a samsung 5v 1amp spare power brick that I can use if you think the server isn’t supplying enough power. The server itself resides on a platinum 1000w ps running maybe 30% load.

When the controller is powered on the GUI is there and I can get into every submenu and make changes. It shows no active connections in its live monitoring and zero speed for fans and hashing. Canaan had me try one by one yesterday on the controller and even had me attempt to power on the miners with no wires connected (except the power supply) all attempts yielded the same result. No signs of life. No way to actually get into them. I was given four auc’s for room for growth after my next purchase after Chinese New Year when their next models are released.

that is the problem

wait for link

this always works  around 10 for 10

https://www.amazon.com/CanaKit-Raspberry-Supply-Adapter-Listed/dp/B00MARDJZ4/ref=sr_1_4?

if you don't use amazon  I can order it and drop ship it to you

[mgoz]

If the power brick doesn't work, try loading the October firmware on the controller and miners. I and others couldn't get the January firmware to work and appears to not be compatible with all 921 units. January firmware bricked mine, however, I could still login to OpenWRT. Just no connections, no miners showing, and repeated boot loop. Cgminer would not start at all.

I reverted back to this firmware on the miners:
https://canaan.io/downloads/software/avalon921/mm/nexttesting/2018-10-25/

And this on the controller:
https://canaan.io/downloads/software/avalon921/openwrt/20181011/

[krisgt30]

Thanks for helping guys, I ordered that power brick, but in the mean time I am going to try several different ones I have lying around the house. I have one for my home use pi but not sure if it’s the same amperage. I’ll bring that with me and some others. If none work, I’ll try the older firmware. It looks like they did install the January firmware on the controller.

so....it was the psus. Canaan sent me the 911 power supplies not the 921. They are sending me the correct ones via Dhl at no charge.

[minefarmbuy]

Yea reading this today I though it was odd to have so much trouble with Canaan product. Glad it's solved.

[philipma1957]

so....it was the psus. Canaan sent me the 911 power supplies not the 921. They are sending me the correct ones via Dhl at no charge.

duh  forgot 921 pulls more juice.

mine  pulls 1800 to mine at 19th

[papampi]

If the power brick doesn't work, try loading the October firmware on the controller and miners. I and others couldn't get the January firmware to work and appears to not be compatible with all 921 units. January firmware bricked mine, however, I could still login to OpenWRT. Just no connections, no miners showing, and repeated boot loop. Cgminer would not start at all.

I reverted back to this firmware on the miners:
https://canaan.io/downloads/software/avalon921/mm/nexttesting/2018-10-25/

And this on the controller:
https://canaan.io/downloads/software/avalon921/openwrt/20181011/

I had the same issue with January RPi firmware. Using 2018-10-11 with no issues.

duh  forgot 921 pulls more juice.

mine  pulls 1800 to mine at 19th

With Voltage offset to 0 mine pulls around 2200 with 21 TH/s

With -1 it is around 2000 with 19-20 TH/s and with -2 pulls 1800 and 18-19 TH/s

[NotFuzzyWarm]

ref https://bitcointalk.org/index.php?topic=5085231.msg49168363#msg49168363 for results of more 921 settings (and some 741/841 ones as well).

[papampi]

ref https://bitcointalk.org/index.php?topic=5085231.msg49168363#msg49168363 for results of more 921 settings (and some 741/841 ones as well).

Awesome,

Thanks a lot.

I run 2 sets for 3-4 days on 2  PSUs, 2200 and 2500 Watts

Here are my results:

Code:

PSU 2500 Watts GUI Voltage offset 0:
 GUI Average speed                         20.989 THs 
 BTC.com Daily average speed               21.18THs, 
 Power                                     2.2 KW


PSU 2200 Watts GUI Voltage offset -1:
 GUI Average speed                         20.969 THs 
 BTC.com Daily average speed               21.28THs, 
 Power                                     2.0 KW

[notabeliever]

Thanks all, without this forum I would not have been able to troubleshoot mine. Working

[minefarmbuy]

Lot's or great info here. Glad to know people read through threads still.

[papampi]

Looks like there is a newer march 2019 firmware: avalon921 openwrt 2019-03-01

There is also a March 2019 MM too: avalon921 mm 2019-03-04

[philipma1957]

Yeah I don't have easy access to my a921  and have not upgraded it at all since the posts I did here a while back.