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:
cgminer version 3.8.5 - Started: [2014-03-08 15:57:01]
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(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
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[P]ool management [S]ettings [D]isplay options [Q]uit
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[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:
[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.