Re: ANTMINER S4 Discussion and Support Thread

I assume you will be replacing the underpowered controller in the next batch also?

can you give us details on this ? only reason I ask, the Bitmain tech is asking me to switch boards from one of my working miners .

Ckolivas was quoted a few pages back about it:

Quote from: ckolivas on October 07, 2014, 10:26:59 AM

It turns out the controller is so low powered that it can only process ~30 shares per second which mean that unless diff is set higher, they work their way into a death spiral before diff catches up. Great...

EDIT: Which ~~presumably~~ means that it can't be fixed by any new firmware releases - it's a hardware issue.

You can keep quoting this, but he issued a firmware fix which 'fixed' it, and Bitmain will issue their own firmware fix soon.

Con says the firmware hack didn't actually fix the problem.

Quote from: ckolivas on October 13, 2014, 10:59:24 PM

Quote from: mdude77 on October 13, 2014, 04:28:00 PM

Quote from: Miner99er on October 13, 2014, 03:56:05 PM

Quote from: wizkid057 on October 13, 2014, 03:24:19 PM

I will probably be giving the default Eligius difficulty a bump soon. Pretty much anything that sits at 128 difficulty is pointless to run these days anyway. Might take it to 1024 for a minimum difficulty.

But the above is correct, there is no way to custom set a difficulty. This is also not necessary with proper hardware and software. The pool chooses the appropriate difficulty.

Flashed 1 S4 to the latest firmware... Miner showing 2Th/s, Pool showing 700GH/s. Difficulty on the box is showing 512, and everyone has recommended 2048 or higher. Hope this can be sorted out soon so I can move these miners back to eligius.

I believe CK has a workaround in the latest cgminer. Not yet officially in the firmware..

Unfortunately not. I tried a simple hack on their driver and it only partially helped. They just need to get off their arses and fix their driver which appears broken.