Windows 10 64bit Pool 0 difficulty changed to 1024

[coldhearted]

hello guys i just want to ask regarding cgminer, im now on windows Pro 10 64bit and mining using u3 miner with cgminer but my problem since i upgrade my os to windows 10 and using the same cgminer and u3 on my pc i always getting this error "Pool 0 Difficulty changed to 1024" i cant seem see a while what is the problem but before on my windows 7 64bit operator it seems stable.. i've tried many options to fix this problem, like example of this

1. cgminer.exe --bmsc-options 115200:1 -o POOL URL:PORT -u USERNAME -p PASSWORD --bmsc-voltage 0755 --bmsc-freq 0882

2. cgminer.exe --bmsc-options 115200:0.65 -o POOL URL:PORT -u USERNAME -p PASSWORD --bmsc-voltage 0800 --bmsc-freq 1306

3. cgminer.exe --bmsc-options 115200:0.65 -o POOL URL:PORT -u USERNAME -p PASSWORD --bmsc-voltage 0800

4. cgminer.exe --bmsc-options 115200:0.5 -o POOL URL:PORT -u USERNAME -p PASSWORD --bmsc-voltage 0800 --bmsc-freq 1306

5. cgminer.exe --bmsc-options 115200:0.5 -o POOL URL:PORT -u USERNAME -p PASSWORD --bmsc-freq 0B82 --bmsc-voltage 0800 --queue 1 --scan-t

all the 5 options is refer to this thread https://bitcointalk.org/index.php?topic=854958.msg9750353#msg9750353


i use cgminer 4.6.1, 4.8.0 i think all the cgminer version that bmsc is enable but still no luck it keeps give me the same error "Pool 0 Difficulty changed to 1024" i dont know what is the problem, however i use the latest cgminer 4.9.2 without using bmsc because its not enable on that version(correct me if im wrong) and im using this line

cgminer.exe -o POOL URL:PORT -u USERNAME -p PASSWORD --au3-freq 250 --au3-volt 800

its seems like quite stable but my problem with that is the hash rate is getting down to 20gigahertz and not what i expected for..

now any idea how to work the cgminer with enable bmsc on windows Pro 10 64bit such a idea is very great appreaciated..


thanks in advance
and sorry for my bad english
BR
coldhearted

[ColderThanIce]

Some pools automatically change the share difficulty depending on the hashrate, so that a share is submitted every x seconds on average. I don't think the share difficulty is what's causing you issues, that's just your pool modifying things for you on the fly.

Are you able to check and ensure that the miner is receiving a solid 12V of power? I've had some issues before with miners acting up when the voltage being supplied was too low (for example, if only 11.5V is supplied to the miner you might run into problems like this).

[coldhearted]

Some pools automatically change the share difficulty depending on the hashrate, so that a share is submitted every x seconds on average. I don't think the share difficulty is what's causing you issues, that's just your pool modifying things for you on the fly.

Are you able to check and ensure that the miner is receiving a solid 12V of power? I've had some issues before with miners acting up when the voltage being supplied was too low (for example, if only 11.5V is supplied to the miner you might run into problems like this).

how can i check if the miner got supplied 12V power? if like that why my miner is working fine when i use the cgminer 4.9.2 and without bmsc enable? correct me if im wrong.. here is the screenshot its working fine but my problem is the hashrate gigahertz is going down below 20gig

http://i67.tinypic.com/33vkj7k.png

[ColderThanIce]

how can i check if the miner got supplied 12V power? if like that why my miner is working fine when i use the cgminer 4.9.2 and without bmsc enable? correct me if im wrong.. here is the screenshot its working fine but my problem is the hashrate gigahertz is going down below 20gig

-snip-

I didn't realize the miner worked fine under cgminer with bmsc disabled. If that's the case, then it shouldn't be a power issue with the device. But, to be clear, this is how things are working for you:

cgminer with bmsc disabled = low hashrate (~20GH/s)
cgminer with bmsc enabled = high hashrate(~60GH/s)

Is that correct? If so, why not just use cgminer with bmsc enabled? Like I mentioned in my previous post, the difficulty change messages aren't errors, they're just the pool adjusting to your hashrate for optimal share submission rates (a share every x seconds).

[coldhearted]

how can i check if the miner got supplied 12V power? if like that why my miner is working fine when i use the cgminer 4.9.2 and without bmsc enable? correct me if im wrong.. here is the screenshot its working fine but my problem is the hashrate gigahertz is going down below 20gig

-snip-

I didn't realize the miner worked fine under cgminer with bmsc disabled. If that's the case, then it shouldn't be a power issue with the device. But, to be clear, this is how things are working for you:

cgminer with bmsc disabled = low hashrate (~20GH/s)
cgminer with bmsc enabled = high hashrate(~60GH/s)

Is that correct? If so, why not just use cgminer with bmsc enabled? Like I mentioned in my previous post, the difficulty change messages aren't errors, they're just the pool adjusting to your hashrate for optimal share submission rates (a share every x seconds).

that is correct sir if

cgminer with bmsc disabled = low hashrate
cgminer with bmsc enabled = Pool 0 Difficulty changed to 1024

and that is my problem sir if i use cgminer with bmsc enabled it keep showing pool 0 difficulty changed to 1024 its like something blocking the hashrate on my miner with this windows 10 here is the screenshot with bmsc enabled in starts waiting for work to be available from pools then after that this is what i get

http://i63.tinypic.com/mh7ok6.png


now sir can you give me some advice how to work the cgminer with bmsc enable on this Windows 10 Pro 64bit because its always showing Pool 0 Difficulty changed to 1024


any idea sir is very much appreciated!

[-ck]

You are confusing official with bitmain versions of cgminer. The commands you are using with "au3" in them are for the official cgminer while "bmsc" options are for bitmain's unofficial version, yet you are using what appears to be an old bitmain version. Download the latest official cgminer 4.9.2 and use only the au3 options.
Official one is available here: http://ck.kolivas.org/apps/cgminer/
As for the "difficulty changed to 1024" that is 100% normal operation and you should stop seeing it as an error. Pools choose what diff you mine at and cgminer will tell you what it is.

[coldhearted]

You are confusing official with bitmain versions of cgminer. The commands you are using with "au3" in them are for the official cgminer while "bmsc" options are for bitmain's unofficial version, yet you are using what appears to be an old bitmain version. Download the latest official cgminer 4.9.2 and use only the au3 options.
Official one is available here: http://ck.kolivas.org/apps/cgminer/
As for the "difficulty changed to 1024" that is 100% normal operation and you should stop seeing it as an error. Pools choose what diff you mine at and cgminer will tell you what it is.

ok tnx., im using cgminer 4.9.2 now and running this line " cgminer.exe -o POOL URL:PORT -u USERNAME -p PASSWORD --au3-freq 250 --au3-volt 800 "

but its low hashrate its that normal? if not, so what should i do? is it my line of au3 is correct on cgminer 4.9.2?

[-ck]

ok tnx., im using cgminer 4.9.2 now and running this line " cgminer.exe -o POOL URL:PORT -u USERNAME -p PASSWORD --au3-freq 250 --au3-volt 800 "

but its low hashrate its that normal? if not, so what should i do? is it my line of au3 is correct on cgminer 4.9.2?

It's normal for these devices to be close to death by now since they don't have a long lifespan. If it's an old/second hand one you bought then some of the chips may be dead already. Most start at ~60GH but by now I doubt many are still running at that.

[philipma1957]

Roll back to windows 7 see if hash rate goes back to normal

Btw they are really bad gear a lot of issues.