Bitcoin Forum
October 19, 2017, 12:33:08 AM *
News: Latest stable version of Bitcoin Core: 0.15.0.1  [Torrent]. (New!)
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: cgminer / USB Eruptor undervolt?  (Read 2235 times)
CobaltBlueD
Newbie
*
Offline Offline

Activity: 19

.


View Profile
August 19, 2013, 03:04:36 PM
 #1

I'll preface this
1. I'm stuck in the newbie section. Yea.
2. I don't have this problem on other machines but I'm solving for this particular machine because it is already on 24/7

I take a couple of USB Eruptors, stick them on a windows machine or a Mac, cgminer shows ~330Mh/s each. BTCGuild shows the cumulative correctly. I put them in the back of a Mac Mini, cgminer still reports ~330Mh/s per stick but BTCGuild is only showing ~370Mh/s in aggregate.

I'm assuming a USB undervoltage would show on cgminer as a reduced Mh/s within cgminer.

Aside from that, it's cgminer 3.3.2 on both the Macs I have tried. No GPU mining. Difficulty of 1. Nothing fancy in the configuration. Sticks are not on hubs, all direct to MB. No network differences. Happens right out of the gate before they get hot. No noticable difference in rejection or HW fail rate. Why would the 330Mh/s per stick not be reaching the pool?

Thanks in advance.
1508373188
Hero Member
*
Offline Offline

Posts: 1508373188

View Profile Personal Message (Offline)

Ignore
1508373188
Reply with quote  #2

1508373188
Report to moderator
1508373188
Hero Member
*
Offline Offline

Posts: 1508373188

View Profile Personal Message (Offline)

Ignore
1508373188
Reply with quote  #2

1508373188
Report to moderator
1508373188
Hero Member
*
Offline Offline

Posts: 1508373188

View Profile Personal Message (Offline)

Ignore
1508373188
Reply with quote  #2

1508373188
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1508373188
Hero Member
*
Offline Offline

Posts: 1508373188

View Profile Personal Message (Offline)

Ignore
1508373188
Reply with quote  #2

1508373188
Report to moderator
1508373188
Hero Member
*
Offline Offline

Posts: 1508373188

View Profile Personal Message (Offline)

Ignore
1508373188
Reply with quote  #2

1508373188
Report to moderator
1508373188
Hero Member
*
Offline Offline

Posts: 1508373188

View Profile Personal Message (Offline)

Ignore
1508373188
Reply with quote  #2

1508373188
Report to moderator
ajw7989
Legendary
*
Offline Offline

Activity: 924


View Profile
August 19, 2013, 03:49:44 PM
 #2

do the usb ports have enough power? Are you using a usb powered hub and how many erupters are you talking about. If they do not get enough power they might not work like they should.
CobaltBlueD
Newbie
*
Offline Offline

Activity: 19

.


View Profile
August 19, 2013, 07:20:43 PM
 #3

do the usb ports have enough power? Are you using a usb powered hub and how many erupters are you talking about. If they do not get enough power they might not work like they should.

No hub. Directly into MB. Power to USB appears fine. 2 Eruptors although one still shows the problem.
dna2
Jr. Member
*
Offline Offline

Activity: 33


View Profile
August 19, 2013, 07:53:35 PM
 #4

Hello, I had various issues with USB ASIC Miners and I found related to my Mac Book Pro. In order to solve them I had to use Windows 7 (on the same PC).
The biggest issue was the MH/s reported by the pool. In fact, while CGMiner was showing the expected one, the pool was showing me about half of the speed.

Finally, I found much more cheaper in terms of power usage (and comfort), to move everything to a raspberry PI.
Anyway, also with the RPI, I had to use a powered USB hub, as when I was connecting a third erupter, everything was becaming unstable...

Now I'm finally ok with 3 USB Erupters, my RPI and a 2.5A powered Hub...

Hope it helps
Kind Regards,
D.
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!