wouw this is amazing  i have got 10 Th (5 S4's) and i cant put more miners in my company, because our buildings electricity board cant handle more  good work  |
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Sorry friends , if bitmain bitstain shitstain .. (whatever you like) still dont fix that scam firmware, we have a right to sing that song loudly.
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You are the man PRELUDE !  you know i cant speak well thanks again  At least we may sound like just a lip service, but we will look into this.
I think you cant look anything, because you are very busy with the make a profit on us. Cyper_BLC, Sorry but this is really hard to explain if you don't know linux, if you want i can make modifications upon your request. I really don't want to offend you.
thanks Smith, i want to learn and make that shit better on my freetimes ( i start reading angstrom-manual.pdf  )
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Bitmain, can you please fix the long outstanding bugs with the S4 before releasing an S4+? Worst bug of all being the J7 connected hash boards getting wayyyyy overvolted. I guarantee that contributed to a lot of dead PSUs. The S4 sucks a lot more power from the wall than it needs to because of that bug!!!
i found that hardware problems and i fixed with cheating boards. but i dont know linux much well, i ask to smith that "how to rebuild initramfs" but he cant help me. if he show how to do that, i will fix that with bbb software, because i know this problems core. i am an 40 years old engineer, sorry for i am not linux guy. but also many thanks to PRELUDE,for to be my voice in this forum and for this biiiiiiiig problem. DONT FORGET, BITMAIN IS CHEATING USalso we know cheap devices are pain in the ass but THIS IS NOT CHEAP ! THIS MUST TO BE PERFECT AS THEY SAID. |
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Does anyone know where the temperature sensor is on an S4 hash board?
there are 2 types of s4 hash board, which one is yours? put your board pic in here and i will show you temp.sensor is where. or you can find well with fine look LM75A 8pin SMD ic. |
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Anyone else here running the S4 at ~0.75Volt or more ? Any lessons leaned that would be nice to know? also what temps are you running them at when over-clocked? Any reported failure rate of the chip? Could be nice to know. without cooler alu, Chips getting brown and burn itself at 0760V. it reach 300 degree, 5mm2 round area at center of the chips. i seen that with my own eyes and i blow my finger skin when very very short time touch. |
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@Prelude,
Requests were in to the programmers and engineers. Unfortunately, we wrench monkeys can't write the firmware. Please be patient!
Thank you
Great to hear! All I (and many others I'm sure) wanted was word from Bitmain that they acknowledge the issue and plan on fixing it. Communication is key! Thank you. nice but not enought... i have said and show that a lot at long time ago, now C2 and S6 is coming pufff lazy bitmain peoples. |
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Bitmain, when can we expect a new firmware update to re-enable voltage control? The last update killed voltage control. I'd use the previous Oct 16th if I needed it right away, but the latest firmware is much more stable. With summer coming I'll be wanting to underclock and undervolt, along with many others I'm sure.
Please make sure that all 4 hash boards respond to voltage settings, previous firmware only controlled 3 of them while the forth was stuck at 0750.
Bitmain wants to be fail and not profitable our S4's. DONT USE LATEST FIRMWARE ! i am planing to share this solution step by step guide in here when this donation adress reach 4 BTC. |
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Does someone have a spreadsheet they can share showing voltage vs power usage vs hash rate for S4s?
Thanks.
M
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yes 61... a bit too high but every customer have different deployment method. Looking at the running up time, at least the high end is stable or managed some how, so it's not crushing the unit.
For some reason my chain#1 on my units are the hottest not chain #4. because chain1 is connected to J7 and fpga cannnot set your proper voltage value to J7 connected hashboard. chain1 is always working 0750V. i told a lot but no ones listen... Hi cypher as i can see you say that chain1 is connected to J7 and in previous posts i saw that chain1 is the top hashing board, but in my case J7 is connected to the bottom hashing board and that is chain#3 right? and what did you meant when you said connect to the neighbor board? is that to top the botom? please clarify Thanks in advance no, doesnt matter which hashboards is top-bottom or right-left. J connectors are define which hashboard is chainX. you can easily change ones to another... if you can move j7 connectecor to top hashboard, you will see 0750 V (you cant set your own value to J7) on fpga board : J7 means Chain1 J9 Chain2 J2 Chain3 J6 Chain4 Thanks that explains alot. So can i take off the cable from J7 and connect to one of the free slots on the top hashing board? Will that work?  Use FPGA board J connecectors for change, dont use hashboard connectors.  |
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yes 61... a bit too high but every customer have different deployment method. Looking at the running up time, at least the high end is stable or managed some how, so it's not crushing the unit.
For some reason my chain#1 on my units are the hottest not chain #4. because chain1 is connected to J7 and fpga cannnot set your proper voltage value to J7 connected hashboard. chain1 is always working 0750V. i told a lot but no ones listen... Hi cypher as i can see you say that chain1 is connected to J7 and in previous posts i saw that chain1 is the top hashing board, but in my case J7 is connected to the bottom hashing board and that is chain#3 right? and what did you meant when you said connect to the neighbor board? is that to top the botom? please clarify Thanks in advance no, doesnt matter which hashboards is top-bottom or right-left. J connectors are define which hashboard is chainX. you can easily change ones to another... if you can move j7 connectecor to top hashboard, you will see 0750 V (you cant set your own value to J7) on fpga board : J7 means Chain1 J9 Chain2 J2 Chain3 J6 Chain4 |
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Sorry Cypher_BLC, it seems I misread your posts.
With the latest firmware, all hash boards are running at a voltage of 0725, but they can't be adjusted.
With previous firmwares, hash board on J7 is stuck at 0750, but the other 3 are adjustable.
Correct?
If so, we need to figure out a way to fix the newest firmware. It is so much more stable than the old one, a great improvement in my opinion.
Yes indeed, you clearly understand that all correct. |
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hi guys,
Bitmains last S4 firmware has a HUGE BUG.(or they do this in their knowledge for sell alot of S5) We cannot change voltage !!!
if you want to do downclock you must to use previus version.
initramfs.bin.SD-20150129.tar this version is Bad for voltage settings...
THIS IS CONFIRMED ON MY ALL S4'S. IF YOU WANT TO DO DOWNCLOCK DONT UPDATE THIS FIRMWARE.!!! this firmware making fixed voltage 0,725 V. this is BAD FOR WATTAGE ! BUT FPGA CHAIN1 PROBLEM IS GONE (for me doesnt matter, i fixed chain1 problem myself) BITMAIN, WHY DID THIS? WE NEED CONFIGURABLE VOLTAGE AND WE PAID A LOT OF MONEY FOR THAT !!! FIX THAT SHT !! What was your solution for fixing the chain 1 issue? I haven't tested lowering the voltage with this firmware yet, but hopefully bitmain will fix it if it is broken. The new firmware works MUCH better than the old one. Turkish solution : seperate pic12F's J7 (chain1) connected tx signal from main tx signal and give tx signal from neighbor hashboard to j7 connected hashboard's pic12F. then "islem tamam" (volaaa) all boards are same voltage. That all flew over my head LOL. Could you give more details for the simple folk like me? 0750 V means your S4 works much higher wattage... All in my posts my friend: https://bitcointalk.org/index.php?action=profile;u=364433;sa=showPosts;start=20 |
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yes 61... a bit too high but every customer have different deployment method. Looking at the running up time, at least the high end is stable or managed some how, so it's not crushing the unit.
For some reason my chain#1 on my units are the hottest not chain #4. because chain1 is connected to J7 and fpga cannnot set your proper voltage value to J7 connected hashboard. chain1 is always working 0750V. i told a lot but no ones listen... |
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hi guys,
Bitmains last S4 firmware has a HUGE BUG.(or they do this in their knowledge for sell alot of S5) We cannot change voltage !!!
if you want to do downclock you must to use previus version.
initramfs.bin.SD-20150129.tar this version is Bad for voltage settings...
THIS IS CONFIRMED ON MY ALL S4'S. IF YOU WANT TO DO DOWNCLOCK DONT UPDATE THIS FIRMWARE.!!! this firmware making fixed voltage 0,725 V. this is BAD FOR WATTAGE ! BUT FPGA CHAIN1 PROBLEM IS GONE (for me doesnt matter, i fixed chain1 problem myself) BITMAIN, WHY DID THIS? WE NEED CONFIGURABLE VOLTAGE AND WE PAID A LOT OF MONEY FOR THAT !!! FIX THAT SHT !! What was your solution for fixing the chain 1 issue? I haven't tested lowering the voltage with this firmware yet, but hopefully bitmain will fix it if it is broken. The new firmware works MUCH better than the old one. Turkish solution : seperate pic12F's J7 (chain1) connected tx signal from main tx signal and give tx signal from neighbor hashboard to j7 connected hashboard's pic12F. then "islem tamam" (volaaa) all boards are same voltage. yes this firmware is good, but not very good, try this then you will understand simply: read your freq (eg 200) read your voltage (eg 0720) read your wattage (eg 1350Watt) with meter than change only voltage settings to "0650", reboot, now you are 200mhz 0650 V, normally this config dont work properly but you will see almost same you will say, this hashrate is impossible with this voltage only 0,650V (this works 175 mhz-1600Ghs) than read wattmeter you will see 1350w again  VOLTAGE NOT SETTED. |
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hi guys,
Bitmains last S4 firmware has a HUGE BUG.(or they do this in their knowledge for sell alot of S5) We cannot change voltage !!!
if you want to do downclock you must to use previus version.
initramfs.bin.SD-20150129.tar this version is Bad for voltage settings...
THIS IS CONFIRMED ON MY ALL S4'S. IF YOU WANT TO DO DOWNCLOCK DONT UPDATE THIS FIRMWARE.!!! this firmware making fixed voltage 0,725 V. this is BAD FOR WATTAGE ! BUT FPGA CHAIN1 PROBLEM IS GONE (for me doesnt matter, i fixed chain1 problem myself) BITMAIN, WHY DID THIS? WE NEED CONFIGURABLE VOLTAGE AND WE PAID A LOT OF MONEY FOR THAT !!! FIX THAT SHT !! |
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hi guys,
Bitmains last S4 firmware has a HUGE BUG.(or they do this in their knowledge for sell alot of S5) We cannot change voltage !!!
if you want to do downclock you must to use previus version.
initramfs.bin.SD-20150129.tar this version is Bad for voltage settings...
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6 TH/S lık 2 adet makine alacağım. Nakit tedarik ediyorum.
Bilgin bey dikkatli olun çoğu 6 TH olarak satılan makineler SCAM olarak değerlendiriliyor. |
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my s4 s working latest firmware 16102014, i copied nice hash cgminer and added #xnsub string but S4 dont start hashing. allways 0Gh.
is this --queue 8192 problem ?
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