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Title: Why cgminer keeps Rejecting Post by: kakakar on June 26, 2013, 05:08:38 AM Why cgminer keeps return lots of Rejected report, actually almost 95% are rejected. I'm playing with a Lancelot FPGA miner. I tried combination of different version of cgminer and pools, but all the same result. For example I used cgminer 3.1.0/3.1.1/2.10.x, pool btcguild, deepbit, even D7 pool. Command line is like below: cgminer -o stratum.d7.lt:8080 -u username -p password -S /dev/ttyUSB0 Cgminer Reject reports [2013-06-26 10:26:17] Accepted e69538a8 Diff 1/1 ICA 0 [2013-06-26 10:26:17] Stratum from pool 0 requested work restart [2013-06-26 10:26:25] Rejected e69538a8 Diff 1/1 ICA 0 ((-2, u'Duplicate share', u"T [2013-06-26 10:26:33] Rejected e69538a8 Diff 1/1 ICA 0 ((-2, u'Duplicate share', u"T [2013-06-26 10:26:41] Rejected e69538a8 Diff 1/1 ICA 0 ((-2, u'Duplicate share', u"T Anyone has an idea how to fix this? Thanks! Title: Re: Why cgminer keeps Rejecting Post by: kakakar on June 26, 2013, 06:11:53 AM Is there anyone in Newbie??? Obviously no one... Title: Re: Why cgminer keeps Rejecting Post by: mprep on June 26, 2013, 10:49:18 AM Try Tech support or Mining sub forums. Someone there might be able to help.
Title: Re: Why cgminer keeps Rejecting Post by: aigeezer on June 28, 2013, 02:39:13 PM Is there anyone in Newbie??? Obviously no one... You were unlucky. I'm sorry for the frustration it caused and I hope the problem got solved. People do check the newbie area for posts like yours but sometimes they get missed. Remember to help out a newbie from time to time later on. Thanks! Title: Re: Why cgminer keeps Rejecting Post by: JamesIV on June 28, 2013, 04:49:55 PM Not 100% sure but wouldn't the cgminer command be
cgminer -o stratum+tcp://stratum.d7.lt:8080 -u username -p password for stratum support? Title: Re: Why cgminer keeps Rejecting Post by: cp1 on June 28, 2013, 04:54:40 PM It says the error is duplicate share, so does that mean you're just calculating the same hash over and over again without changing it?
Title: Re: Why cgminer keeps Rejecting Post by: Trillium on June 28, 2013, 05:30:54 PM Perhaps lowering Queue, Scan-time, Expiry parameters might be helpful. This is probably a hardware specific thing that your FPGA needs. I use the values 0 2 2 respectively for those parameters but I am not using your exact hardware. Might be worth looking into. Changing those parameters is critical for solomining many of the altcoins and even in some cases using pools.
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