Antminer U2 High Error Rates - Please Help

[toomuchtv]

I decided to get into mining for a little bit of fun and speculation.

I ordered three Antminer U2s and got them this week.

I'm running Ubuntu, bfgminer, purchased this USB hub: http://www.amazon.com/gp/product/B00ELPSEVW/ref=oh_details_o00_s01_i00?ie=UTF8&psc=1 (probably not the greatest in hindsight, but should be able to run at least three no problem)
and this fan: http://www.amazon.com/gp/product/B003XN24GY/ref=oh_details_o00_s01_i01?ie=UTF8&psc=1

So out of the first three I ordered, one was working great, 0.2% HW errors after about 18 hours, one not so great giving 12% HW error, and one 100% HW errors.

I sent the 100% HW error chip back and ordered two more.

I got my additional two today. One gives me 14% HW error, the other is giving me 70+%!

Am I just getting bad hardware, or is there some setup I'm missing? The chips run pretty cool, barely warm to the touch. I'm not overclocking.

Here is the command I'm using:

Code:

sudo bfgminer -S antminer:all -o http://btc.give-me-coins.com:3334 -O xxx -p xxx --icarus-options 115200:2:2

Any suggestions?

[bookiwp]

Program configuration not to you, your machine configuration and fit the set procedure to configure your, I also get half a month before the promotion, has been often crashes.

[toomuchtv]

bookiwp, I don't understand your post sorry.

Here is my current status after 9.5 hours:

Code:

 Block: ...72631ab1 #292884  Diff:5.01G (35.84Ph/s)  Started: [05:22:01]
 ST:4  F:0  NB:69  AS:0  BW:[207/ 16 B/s]  E:12.79  I:25.16uBTC/hr  BS:80.3k
 3            |  6.80/ 6.84/ 6.05Gh/s | A:2972 R:5+0(.17%) HW:4213/8.1%
--------------------------------------------------------------------------------
 AMU 0:       |  1.94/ 2.28/ 1.95Gh/s | A: 974 R:1+0(.10%) HW:2022/ 12%
 AMU 1:       |  2.42/ 2.28/ 2.19Gh/s | A:1090 R:1+0(.09%) HW:   0/none
 AMU 2:       |  2.08/ 2.28/ 1.91Gh/s | A: 909 R:3+0(.33%) HW:2193/ 13%

[neurorit]

same problem w/ the u2. I get hw errors even when not overclocking. It won't get up to 1.5ghs without overclocking. I'm pretty sure it's just crap-quality hardware. I'm having better luck with a gridseed. You might want to check those out, it's a lil better gh/s for the dollar They can do both sha256 and scrypt, which scrypt coins are a lot more profitable.

[neurorit]

have you tried adjusting the clockspeed?

try setting your clock to this  --set-device antminer:clock=x0781