Low hashrate Avalon 851

[maxomid]

Hello
I Have trouble with this Asic , its Hashrate is very low..
PSU 1800W

Please see the screenshot

https://i.imgur.com/ssypQxh.jpg
https://i.imgur.com/fE4zwAG.jpg
https://i.imgur.com/Q7Un47H.jpg

[HagssFIN]

You might want to post the Cgminer API log for starters!!

[NotFuzzyWarm]

And also post in the Avalon Support thread https://bitcointalk.org/index.php?topic=3224256.0 along with reading that thread - at least the 1st post - as you may find your answer already there.

Oh, and when posting the API log please be sure to use the CODE tag (looks like # ) so the log does not become a wall of text....

[philipma1957]

I looked at your screen shots  they are for 5 minutes

and you overclocked to +1

so  try showing a 1 hour screenshot not a 5 minute screen shot
and try it with  no over clock

5 minutes is pretty much worthless for telling true hash rate.
and the 851 is power mad hungry on over clock
so the 1800 watt psu could be too weak do no over clock please.

[maxomid]

Thanks for the reply

My device is new. But its Hashrate is very low   Average Hashrate  9.5TH/S

Watch new IMG

what should I do?

https://serving.photos.photobox.com/30549355ae54f0696dba2719e8123b61ea22a876bad6fdd942989e2a96f3df9a61f5a3a4.jpg
https://serving.photos.photobox.com/7531579818d50c79a9b7553210be6b692310a135286489d5302b59047225e0d273cb77c9.jpg
https://serving.photos.photobox.com/06933474f7c2a0151e35cfdb9d1456ea2c77e8166b9d8ad82d64727b277779f95b69fb49.jpg

[NotFuzzyWarm]

The Avalons report what your PSU is feeding them. Check  Status > CGMiner API log. Near the top you will see:

Code:

[Firmware Version] => Avalon Firmware - 20180305
    luci: 62d814c
    cgminer: b5b497e
    cgminer-packages: 960e108
Reply was 'STATUS=S,When=1552405632,Code=70,Msg=CGMiner stats,Description=cgminer 4.10.0|STATS=0,ID=AV80,Elapsed=7644723,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,MM ID1=Ver[8411802-1e73b80]
    DNA[0130a561fa8de79c]
    Elapsed[7644726]
    MW[2363602990 2363604773 2363605616 2363606435]
    LW[9454419814]
    MH[4221 4182 4394 4095]
    HW[16892]
    Temp[43]
    TMax[87]
    Fan[5760]
    FanR[100%]
    Vi[1203 1203 1212 1212]
    Vo[3773 3798 3825 3827]
    GHSmm[13748.50]
    WU[190936.23]
    Freq[768.59]
    PG[15]

The line Vi tells you what the PSU is feeding to each of the PMU's (Power Management Units) and PG is a generic Power quality value.
In my above example the PSU is feeding 12.03, 12.03, 12.12 and 12.12v to each of the PMU's and PG is the typical value of 15 (very good). If PG goes below 13 or so you will have problems with boards dropping out.

Using the Code tag (looks like # ) post your API log here.

[HagssFIN]

I suspect that there might be a language barrier in this case

[philipma1957]

that psu is no good it does not have enough power it is 1600 watts not 1800 watts.

set the miner to 0 not +1

show me a 2 hour hash rate

Tell us your native language.

[maxomid]

Hello
CGMiner API log See Screenshot
So the problem is the  PSU?
Bitmain Antminer APW7 1800W Power Supply For Avalon 851 Is it right?

https://serving.photos.photobox.com/25262526a3919324b252562bad52780b59eebe078dcb057bcb31cef268084449a0d74959.jpg

that psu is no good it does not have enough power it is 1600 watts not 1800 watts.

set the miner to 0 not +1

show me a 2 hour hash rate

Tell us your native language.

My Psu it is 1600w?
0 or +1 Average Hashrate 24h 9.5TH/S.

[HagssFIN]

Dude,
You have the new low power firmware installed.

That's why your hash rate is lower than stock A851.

Please read this carefully to fully understand what I mean:
https://canaan.io/avalonminer-8-series-high-efficiency-firmware-released/

[maxomid]

Dude,
You have the new low power firmware installed.

That's why your hash rate is lower than stock A851.

Please read this carefully to fully understand what I mean:
https://canaan.io/avalonminer-8-series-high-efficiency-firmware-released/

thanks for your response
What should I do to solve the problem? Revert to older version?

[HagssFIN]

Yes

[maxomid]

Yes

thanks. downgrade firmware Controller and Machine both?

[HagssFIN]

Both

[maxomid]

Thank you very much. My problem has been resolved