Got the same problem on 1 S9 from batch 21-30 november, with APW3+ PSU.

bminer not found....

I tried different firmwares:
- fixed frequency 550MHz
- autofreq from August 15

I did several soft and hard reboots of the miner. It finally worked but I really don't know why.

That seems totally random.

If Bitmain could explain what's going on that'd be great

Hey,

  I'm the dev of thehalvening.com. I've just noticed this thread, thanks for all the nice comments! 
 
  Just to answer a few questions:

"Total number of bitcoins": the value is not totally accurate since new bitcoins only come when a block is found. But we wanted to give a sense of the increase rate and it's easier to visualize it with a continuous evolution!

@Laosai: It seems you have trouble with the text animation. What version of Firefox are you using?


@Amph: Well all of these dates are estimates, no one can tell the exact date because it depends on mining activity! Our countdown is based on a 10-min block generation time, which is Bitcoin network target

Feedback is very much welcome, cheers!

Thanks

Less than the S3? Sounds almost to good to be true!
I have no choice but running the miner a few meters from my working desk, so the noise level is kind of critical... The S5 was a monster, I had to mount quieter fans but then it got hard to cool. Ambient air had to be ~20°C to keep the miner below 60°C.

How about the noise from APW3 PSU advertised by Bitmain?

@beffje, thanks for posting this.

What's the input air temperature that gets you to 60°C? And how unpleasant is the fan noise at that speed (~2200RPM)?

Right, thanks for the tip! (pun also intended)

Hi,

  With the summer hotness I was tired of continuously adjusting my S5 frequency, so I decided myself to dive into shell coding and wrote a small script to do it automatically.

  I'm pretty happy with what I got: every 20 minutes the script checks the temp sensors, increase or decrease the frequency and restarts cgminer. Thus I keep the temp between 58 and 62 °C at all time.

  If you're interested you can download the script on github: https://github.com/kmitz/Regul
  Installation notes are on my blog: https://jomcflyatwork.wordpress.com/

  You can ask me questions in this thread or PM me for help.

  Cheers!

NB: If you worry about my script stealing all your coins, just check the script, it's only 40 lines and very straightforward:
1)read temp
2)write new frequency in /config/cgminer.conf
3)restart cgminer

I replaced the loud stock fan by two 120mm fans I had in spare. The fans are in push-pull configuration and powered directly from the PSU (constant speed).
It makes my S5 really quiet, about the same as my desktop computer. But I had to downclock to 250MHz (~800GH/s) to keep the temp below 60°C.

So at this point I loose 30% of hashing power to reach an acceptable sound level..
Next step I'll try more powerful fans with the "fan shroud" trick mentioned by dog1965 (https://bitcointalk.org/index.php?topic=908494.msg10250546#msg10250546

I also noticed a big spread between the 2 temp sensors... Any idea what it could be??

http://i.imgur.com/yoUwCpd.jpg
 

@suchmoon @Biodom
Thanks! I connected the 2 PCIe cables, up to now it seems to work great. I'll do a temperature check tomorrow.

Now I have to make this fanmod before the wife starts to beat me up.... :p
 

Sorry for the noob question:

I'm setting up my freshly arrived S5. Power supply is Corsair rm750.

I keep reading everywhere (http://www.enthusiastpc.net/articles/00002/3.aspx) that maximum power output is 75W for 6pin connectors and 150W for 8 pin connectors.
How can the S5 draw ~500W using 4x6PCIe providing 75W each?
And can I power it with 2 cables of the type 1x8PCIe -> 2x6PCIe?

Thanks

Finally didn't turn out well... My order for one S5
got cancelled 2 days after payment. Got an email from Zoomhash saying they don't have enough stock. But they debited my account anyway!
Now I'm nervously waiting for the refund...
Bad first experience in the mining world.

Edit: A least I'm not alone :-p

Thanks for the tip! I just ordered one S5 on Zoomhash. I checked here and there if they were legit...seems ok.

What do you mean by "6 x 3 pin fan board"? The fans are not powered by the S5 itself?