Quote from: GrapeApe on January 06, 2014, 10:12:54 PM

From Mr.Teal himself in the chili thread.

Quote from: MrTeal on December 22, 2013, 12:49:06 AM

As of right now there isn't an option to limit voltage. Below is a version of 14e compiled to limit the voltage to 1.1V instead of 1.15V.

Over the break for the next couple weeks I plan to get some changes to the firmware done to allow limits to be imposed on different variables like frequency setpoint and voltage through command extensions.

BTW- Not super useful for most people since you can't use it while hashing since the mining software has the port open, but the ZlX command (lowercase "L") will return the temperature of all the chips. If you're compiling your own cgminer, you might want to add in a way to read that.

Second I don't have my Lucko boards yet so this may really mean nothing, but I was having this very issue with 2 boards from batch 3 (I've actually posted this several times). I'm a little confused as to why NOBODY is trying the 1.1V firmware. I flashed the modified firmware and it fixed them immediately, but I took a small hit on the hash rate until my MOSFET heat sinks came in a day or 2 later and I stuck them on, put a fan on them and my hash rate is a consistent 39GH/s on both of them holding steady at 1.1V using CGMiner 3.9.0. Before I flashed the modified firmware they would shoot up to 40-41GH/s, the voltage would eventually hit 1.16V and then they would reset. So I guess using the internal safeguards to limit the boards by heating them up would work because they will throttle themselves back but wouldn't it be easier to just flash the firmware and then if you don't mind report back to us what the results are?

All of you that are having issues with the boards resetting should at least for shits and grins flash the modified firmware

For the Linux households out there from a helpful forum member. For the usb to work you also have to add your user to the virtual box group (I hope I said that right).

Quote from: twib2 on December 24, 2013, 04:02:23 AM

BTW, you can actually flash the chili from within a VirtualBox image using XP. You just have to make sure you allow the USB ID to go through, and then it works just fine. So: create virtualbox, install xp, add driver for bfgminer for chili, flash the chili, remove virtualbox, and you're not inflicted with windows for very long. We are mostly windows-free, too - I just keep an image around for just these types of things.

MudBankKeith I was under the impression you had already flashed them with the modified firmware. If so are you still having issues after?

EDIT: BTW I am using the CoolerMaster 212 EVO for coolers on those 2 boards. I have others with the Accelero TT2 and they don't have this issue but they run much hotter than the others and hash at 32-34GH/s.

I still have a board with reset problems and tried firmware 1.1V on it: no change on behavior.
On one other hiting near 39-40 GHs firmware gives good results: now is stable

this is 3 lucko's received friday board results after almost 48 hour hashing ( + one computer restart to apply windows updates )
takes some restarts to put all at work but after they work without problems

bfgminer version 3.9.0 - Started: [2014-01-06 23:06:47] - [ 0 days 01:06:44]
[M]anage devices [P]ool management [S ettings [D]isplay options [H]elp [Q]uit
Connected to eu-stratum-lb489kj.btcguild.com diff 64 with stratum as user ****
Block: ...bcb35003 #279016 Diff:1.42G (10.15Ph/s) Started: [23:37:03]
ST:13 F:0 NB:11 AS:1 BW:[ 56/ 43 B/s] E:470.73 I: 1.46mBTC/hr BS:47.7k
3 64.0C | 104.2/105.0/97.92Gh/s | A:1436 R:9+12(.65%) HW:5773/5.9%
--------------------------------------------------------------------------------
BFL 0: 46.0C | 33.45/33.22/32.31Gh/s | A: 485 R:3+ 0(.61%) HW: 687/2.2%
BFL 1: 58.0C | 35.93/35.91/31.66Gh/s | A: 457 R:4+ 8(.92%) HW:3346/ 10%
BFL 2: 63.0C | 35.83/35.88/33.94Gh/s | A: 496 R:2+ 4(.43%) HW:1747/5.2%
--------------------------------------------------------------------------------
[2014-01-07 00:12:56] Accepted 0315082a BFL 2 pool 0 Diff 83/64
[2014-01-07 00:12:58] Accepted 01c75684 BFL 1 pool 0 Diff 143/64
[2014-01-07 00:12:59] Accepted 00be9b4a BFL 1 pool 0 Diff 343/64
[2014-01-07 00:13:00] Stratum from pool 0 requested work update
[2014-01-07 00:13:00] Accepted 0122d732 BFL 1 pool 0 Diff 225/64
[2014-01-07 00:13:03] Accepted 039b74e0 BFL 0 pool 0 Diff 70/64
[2014-01-07 00:13:11] Accepted 01624475 BFL 1 pool 0 Diff 184/64
[2014-01-07 00:13:15] Accepted 00d41cd6 BFL 1 pool 0 Diff 308/64
[2014-01-07 00:13:15] Accepted 03049b54 BFL 2 pool 0 Diff 84/64
[2014-01-07 00:13:21] Accepted 00ecc934 BFL 1 pool 0 Diff 276/64
[2014-01-07 00:13:26] Accepted 02ada407 BFL 1 pool 0 Diff 95/64
[2014-01-07 00:13:30] Stratum from pool 0 requested work update
[2014-01-07 00:13:31] Accepted 03e4349b BFL 1 pool 0 Diff 65/64
[2014-01-07 00:13:31] Accepted 0152442c BFL 1 pool 0 Diff 193/64

Regards