Post
Topic
Board Mining support
Re: Bitmain AntMiner U1 Tips & Tricks
by
forbun
on 09/03/2014, 00:10:11 UTC
Hi all,

I have a Bitmain Antminer U1 USB miner (1.6 GH/s) which seems to be dead. When I start cgminer, it doesn't seem to find any USB device attached. Here's the output:

Code:
cgminer version 3.8.5 - Started: [2014-03-08 15:57:01]
--------------------------------------------------------------------------------
 (5s):0.000 (avg):0.000h/s | A:0  R:0  HW:0  WU:0.0/m
 ST: 2  SS: 0  NB: 1  LW: 7  GF: 0  RF: 0
 Connected to stratum.bitcoin.cz diff 1 with stratum as user ...
 Block: c8c977e6...  Diff:3.81G  Started: [15:57:01]  Best share: 0
--------------------------------------------------------------------------------
 [P]ool management [S]ettings [D]isplay options [Q]uit
--------------------------------------------------------------------------------

 [2014-03-08 15:57:38] Bmsc send golden nonce
 [2014-03-08 15:57:38] Bmsc recv golden nonce timeout
 [2014-03-08 15:57:38] -----------------start freq-------------------
 [2014-03-08 15:57:39] Send frequency 82078106
 [2014-03-08 15:57:39] Send freq getstatus 84000400
 [2014-03-08 15:57:41] ------recv freq getstatus no data finish------
 [2014-03-08 15:57:42] -----------------start nonce------------------
 [2014-03-08 15:57:42] Bmsc send golden nonce
 [2014-03-08 15:57:42] Bmsc recv golden nonce timeout
 [2014-03-08 15:57:46] Pool 0 difficulty changed to 1
 [2014-03-08 15:57:46] Stratum from pool 0 requested work restart
 [2014-03-08 15:57:48] -----------------start freq-------------------
 [2014-03-08 15:57:48] Send frequency 82078106
 [2014-03-08 15:57:49] Send freq getstatus 84000400

These messages mostly just repeat. After I hit "q", I see:

Code:
[2014-03-08 15:58:24]
Summary of runtime statistics:

 [2014-03-08 15:58:24] Started at [2014-03-08 15:57:01]
 [2014-03-08 15:58:24] Pool: http://stratum.bitcoin.cz:3333
 [2014-03-08 15:58:24] Runtime: 0 hrs : 1 mins : 22 secs
 [2014-03-08 15:58:24] Average hashrate: 0.0 Kilohash/s
 [2014-03-08 15:58:24] Solved blocks: 0
 [2014-03-08 15:58:24] Best share difficulty: 0
 [2014-03-08 15:58:24] Share submissions: 0
 [2014-03-08 15:58:24] Accepted shares: 0
 [2014-03-08 15:58:24] Rejected shares: 0
 [2014-03-08 15:58:24] Accepted difficulty shares: 0
 [2014-03-08 15:58:24] Rejected difficulty shares: 0
 [2014-03-08 15:58:24] Hardware errors: 0
 [2014-03-08 15:58:24] Utility (accepted shares / min): 0.00/min

 [2014-03-08 15:58:24] Work Utility (diff1 shares solved / min): 0.00/min

 [2014-03-08 15:58:24] Stale submissions discarded due to new blocks: 0

 [2014-03-08 15:58:24] Unable to get work from server occasions: 0

 [2014-03-08 15:58:24] Work items generated locally: 9
 [2014-03-08 15:58:24] Submitting work remotely delay occasions: 0

 [2014-03-08 15:58:24] New blocks detected on network: 1

 [2014-03-08 15:58:24] Summary of per device statistics:

Does Bitmain have any kind of warranty, repair, or replacement?

I have another (separate) Antminer U1 and it seems to be working great.