OLD: BFGMiner 4.10.0: GBT+Stratum, RPC, Mac/Linux/Win64, Spondoolies SP30

[Kurvanga]

POLA breakage. New update also breaks things like MultiMiner as it can't deal with adding #flags to the stratum URI (nor does the coinbase checks actually turn off with "/#xnsub" appended).

http://en.wikipedia.org/wiki/Principle_of_least_astonishment

The release notes do say "#skipcbcheck", not "#xnsub"...

The astonishment in this case is that you're being asked to work on invalid blocks...

This fixed the issue, thank you very much!

[albysprx]

i have problem with 4.8: http://prntscr.com/4nnirs
that i don't have with 4.7: http://prntscr.com/4nnji9
.... for now, i returned to 4.7...
this is the code that i used:

Code:

bfgminer.exe --scrypt -S opencl:noauto -S zus:all -o stratum+tcp://stratum.nicehash.com:3333 -u 1AsLCvR43Yeka6Z8y1kURPQenwdyi7tfBp.1 -p x --set zus:chips=6

with 1 gawminers fury

[Tad3j]

i have problem with 4.8: http://prntscr.com/4nnirs
that i don't have with 4.7: http://prntscr.com/4nnji9
.... for now, i returned to 4.7...
this is the code that i used:

Code:

bfgminer.exe --scrypt -S opencl:noauto -S zus:all -o stratum+tcp://stratum.nicehash.com:3333 -u 1AsLCvR43Yeka6Z8y1kURPQenwdyi7tfBp.1 -p x --set zus:chips=6

with 1 gawminers fury

Well that's the same story that I get with 4.8.0 on raspberry pi linux compiled image. I am using one Hurricane X3 with new and one with old controller. #xnsub worked temporary ... The image is minepeon 0.2.4.6. I enabled -scrypt flag while compiling. Any ideas Luke?

[nwoolls]

i have problem with 4.8: http://prntscr.com/4nnirs
that i don't have with 4.7: http://prntscr.com/4nnji9
.... for now, i returned to 4.7...
this is the code that i used:

Code:

bfgminer.exe --scrypt -S opencl:noauto -S zus:all -o stratum+tcp://stratum.nicehash.com:3333 -u 1AsLCvR43Yeka6Z8y1kURPQenwdyi7tfBp.1 -p x --set zus:chips=6

with 1 gawminers fury

Well that's the same story that I get with 4.8.0 on raspberry pi linux compiled image. I am using one Hurricane X3 with new and one with old controller. #xnsub worked temporary ... The image is minepeon 0.2.4.6. I enabled -scrypt flag while compiling. Any ideas Luke?

The error in the screenshot indicates the pool is being deactivated due to failing the coinbase check. My suggestion would be to disable the coinbase check by using #skipcbcheck in the pool URI.

[jediwashuu]

Luke, i recently tried upgrading from 4.2 to 4.8.  I have been using 4.2 fine with CGWatcher, but when i go to use 4.8 with CGWatcher, it closes in scrypt mode.  running the command without CGWatcher works fine.  what command can i run to create a log file to see why it closes?

im not sure exactly what is causing the program to close itself, because i have 4.8 running in sha256 mode fine, and the same command in 4.2 works for my scrypt miners

thanks!

[Ntrain2k]

Luke, i recently tried upgrading from 4.2 to 4.8.  I have been using 4.2 fine with CGWatcher, but when i go to use 4.8 with CGWatcher, it closes in scrypt mode.  running the command without CGWatcher works fine.  what command can i run to create a log file to see why it closes?

im not sure exactly what is causing the program to close itself, because i have 4.8 running in sha256 mode fine, and the same command in 4.2 works for my scrypt miners

thanks!

I had this problem with 4.3 and up a while back. Give this a shot:

https://bitcointalk.org/index.php?topic=185553.msg7607210#msg7607210

[nwoolls]

Luke, i recently tried upgrading from 4.2 to 4.8.  I have been using 4.2 fine with CGWatcher, but when i go to use 4.8 with CGWatcher, it closes in scrypt mode.  running the command without CGWatcher works fine.  what command can i run to create a log file to see why it closes?

im not sure exactly what is causing the program to close itself, because i have 4.8 running in sha256 mode fine, and the same command in 4.2 works for my scrypt miners

thanks!

I had this problem with 4.3 and up a while back. Give this a shot:

https://bitcointalk.org/index.php?topic=185553.msg7607210#msg7607210

This is a bug in BFGMiner 4.8 that is fixed for the next release. The issue is in making the STATS RPC API call to certain drivers.

The fix is already merged if you build from Git.

[whitemax]

Hello,
i try run Bi Fury erupters on my QNAP nas system. Mod cp210x is loaded, but bfgminer steel not recognise my Bi Furry

Code:

# bfgminer -D -T -d?  
 [2014-09-18 23:57:31] setrlimit: Soft fd limit not being changed from 1024 (FD_SETSIZE=1024; hard limit=1024)
 [2014-09-18 23:57:31] Started bfgminer 4.8.0
 [2014-09-18 23:57:31] Loaded configuration file /root/.bfgminer/bfgminer.conf
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:010:001 (path=(null), vid=1d6b, pid=0003, manuf=Linux 3.4.6 etxhci_hcd_140219, prod=Etron xHCI Host Controller, serial=0000:06:00.0)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:009:001 (path=(null), vid=1d6b, pid=0002, manuf=Linux 3.4.6 etxhci_hcd_140219, prod=Etron xHCI Host Controller, serial=0000:06:00.0)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:008:001 (path=(null), vid=1d6b, pid=0001, manuf=Linux 3.4.6 uhci_hcd, prod=UHCI Host Controller, serial=0000:00:1d.2)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:007:001 (path=(null), vid=1d6b, pid=0001, manuf=Linux 3.4.6 uhci_hcd, prod=UHCI Host Controller, serial=0000:00:1d.1)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:006:001 (path=(null), vid=1d6b, pid=0001, manuf=Linux 3.4.6 uhci_hcd, prod=UHCI Host Controller, serial=0000:00:1d.0)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:005:001 (path=(null), vid=1d6b, pid=0001, manuf=Linux 3.4.6 uhci_hcd, prod=UHCI Host Controller, serial=0000:00:1a.2)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:004:001 (path=(null), vid=1d6b, pid=0001, manuf=Linux 3.4.6 uhci_hcd, prod=UHCI Host Controller, serial=0000:00:1a.1)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:003:001 (path=(null), vid=1d6b, pid=0001, manuf=Linux 3.4.6 uhci_hcd, prod=UHCI Host Controller, serial=0000:00:1a.0)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:002:001 (path=(null), vid=1d6b, pid=0002, manuf=Linux 3.4.6 ehci_hcd, prod=EHCI Host Controller, serial=0000:00:1d.7)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:001:001 (path=(null), vid=1d6b, pid=0002, manuf=Linux 3.4.6 ehci_hcd, prod=EHCI Host Controller, serial=0000:00:1a.7)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:009:003 (path=(null), vid=198c, pid=b1f1, manuf=c-scape, prod=bi?fury, serial=1313ef2602542fe)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:007:002 (path=(null), vid=03f0, pid=0317, manuf=HewLett Packard, prod=HP LaserJet 1200, serial=00CNBF078655)
 [2014-09-18 23:57:32] lowlevel_scan: Found usb device at usb:001:002 (path=(null), vid=1005, pid=b155, manuf=        , prod=USB DISK MODULE, serial=19DC1900AC036E7B)
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:06:00.0 (path=0000:06:00.0, vid=1b6f, pid=7052, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:05:00.0 (path=0000:05:00.0, vid=8086, pid=10d3, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:04:00.0 (path=0000:04:00.0, vid=8086, pid=10d3, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1f.3 (path=0000:00:1f.3, vid=8086, pid=3a30, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1f.2 (path=0000:00:1f.2, vid=8086, pid=3a22, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1f.0 (path=0000:00:1f.0, vid=8086, pid=3a16, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1e.0 (path=0000:00:1e.0, vid=8086, pid=244e, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1d.7 (path=0000:00:1d.7, vid=8086, pid=3a3a, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1d.2 (path=0000:00:1d.2, vid=8086, pid=3a36, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1d.1 (path=0000:00:1d.1, vid=8086, pid=3a35, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1d.0 (path=0000:00:1d.0, vid=8086, pid=3a34, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1c.5 (path=0000:00:1c.5, vid=8086, pid=3a4a, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1c.4 (path=0000:00:1c.4, vid=8086, pid=3a48, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1c.3 (path=0000:00:1c.3, vid=8086, pid=3a46, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1c.2 (path=0000:00:1c.2, vid=8086, pid=3a44, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1c.1 (path=0000:00:1c.1, vid=8086, pid=3a42, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1c.0 (path=0000:00:1c.0, vid=8086, pid=3a40, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1b.0 (path=0000:00:1b.0, vid=8086, pid=3a3e, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1a.7 (path=0000:00:1a.7, vid=8086, pid=3a3c, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1a.2 (path=0000:00:1a.2, vid=8086, pid=3a39, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1a.1 (path=0000:00:1a.1, vid=8086, pid=3a38, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:1a.0 (path=0000:00:1a.0, vid=8086, pid=3a37, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:02.0 (path=0000:00:02.0, vid=8086, pid=0be2, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found pci device at pci:0000:00:00.0 (path=0000:00:00.0, vid=8086, pid=0bf3, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] lowlevel_scan: Found vcom device at dev_t:00bc000000000000 (path=/dev/ttyUSB0, vid=0000, pid=0000, manuf=(null), prod=(null), serial=(null))
 [2014-09-18 23:57:32] Devices detected:
0 devices listed

Code:

[/dev] # dmesg | grep -i usb
[   86.656087] usbcore: registered new interface driver snd-usb-audio
[   86.658558] usbcore: registered new interface driver snd-usb-caiaq
[   86.678534] usbcore: registered new interface driver uvcvideo
[   86.678541] USB Video Class driver (1.1.1)
[   94.095610] usb 2-3: USB disconnect, device number 3
[   94.095619] usb 2-3.3: USB disconnect, device number 9
[   94.095944] usb 2-3.4: USB disconnect, device number 10
[  102.317424] usb 2-3: new high-speed USB device number 15 using ehci_hcd
[  102.434927] hub 2-3:1.0: USB hub found
[  102.718830] usb 2-3.2: new full-speed USB device number 16 using ehci_hcd
[  103.326549] usb 2-3.3: new high-speed USB device number 17 using ehci_hcd
[  103.416563] hub 2-3.3:1.0: USB hub found
[  103.500196] usb 2-3.4: new high-speed USB device number 18 using ehci_hcd
[  103.589966] hub 2-3.4:1.0: USB hub found
[  103.873408] usb 2-3.4.2: new full-speed USB device number 19 using ehci_hcd
[ 4122.006502] usbcore: registered new interface driver cp210x
[ 4122.006543] USB Serial support registered for cp210x
[ 4998.501888] usb 2-3: USB disconnect, device number 15
[ 4998.501895] usb 2-3.2: USB disconnect, device number 16
[ 4998.502395] usb 2-3.3: USB disconnect, device number 17
[ 4998.503015] usb 2-3.4: USB disconnect, device number 18
[ 4998.503024] usb 2-3.4.2: USB disconnect, device number 19
[ 5007.870026] usb 2-3: new high-speed USB device number 20 using ehci_hcd
[ 5007.986693] hub 2-3:1.0: USB hub found
[ 5008.271485] usb 2-3.2: new full-speed USB device number 21 using ehci_hcd
[ 5008.877217] usb 2-3.3: new high-speed USB device number 22 using ehci_hcd
[ 5008.967775] hub 2-3.3:1.0: USB hub found
[ 5009.051854] usb 2-3.4: new high-speed USB device number 23 using ehci_hcd
[ 5009.141770] hub 2-3.4:1.0: USB hub found
[ 5009.424940] usb 2-3.4.2: new full-speed USB device number 24 using ehci_hcd
[ 5093.213023] usb 2-3.4.2: USB disconnect, device number 24
[ 5093.341881] hub 2-3.4:1.0: unable to enumerate USB device on port 2
[ 5097.809420] usb 2-3.2: USB disconnect, device number 21
[ 5100.022088] usb 2-3: USB disconnect, device number 20
[ 5100.022095] usb 2-3.3: USB disconnect, device number 22
[ 5100.022421] usb 2-3.4: USB disconnect, device number 23
[ 5125.311869] usb 6-1: USB disconnect, device number 2
[ 5132.836041] usb 6-1: new full-speed USB device number 3 using uhci_hcd
[ 5132.949806] usb 6-1: device descriptor read/64, error -71
[ 5316.411135] usb 6-1: USB disconnect, device number 3
[ 5352.056349] usb 9-3: new full-speed USB device number 2 using etxhci_hcd_140219
[ 5352.060087] usb 9-3: Device not responding to set address.
[ 5352.263670] usb 9-3: Device not responding to set address.
[ 5352.463482] usb 9-3: device not accepting address 2, error -71
[ 5352.617165] usb 9-3: new full-speed USB device number 3 using etxhci_hcd_140219
[ 5353.040247] usb 9-3: ep 0x81 - rounding interval to 1024 microframes, ep desc says 2040 microframes
[/dev] # 

[ManeBjorn]

I have a question on the ASICMiner Tube and Rockminer T1.
How are you connecting it to the computer to run them from BFGminer?
I know we are looking into to RPi support and there are some different ways to connect them as they do not have a USB port.

[Luke-Jr]

I have a question on the ASICMiner Tube and Rockminer T1.
How are you connecting it to the computer to run them from BFGminer?
I know we are looking into to RPi support and there are some different ways to connect them as they do not have a USB port.

Run BFGMiner with --stratum-port 3333 and configure the Tube/T1 controller to talk to it.

[ManeBjorn]

Ah I see so it is not direct support just the Proxy support.
MultiMiner and BFGMiner do work well with Proxy's which is nice.
Thanks for clearing that up.
We are looking to get an RPi working as a controller with them directly as opposed to being a proxy.
Thanks for the great work. 

I have a question on the ASICMiner Tube and Rockminer T1.
How are you connecting it to the computer to run them from BFGminer?
I know we are looking into to RPi support and there are some different ways to connect them as they do not have a USB port.

Run BFGMiner with --stratum-port 3333 and configure the Tube/T1 controller to talk to it.

[Luke-Jr]

Ah I see so it is not direct support just the Proxy support.
MultiMiner and BFGMiner do work well with Proxy's which is nice.
Thanks for clearing that up.
We are looking to get an RPi working as a controller with them directly as opposed to being a proxy.
Thanks for the great work. 

This is definitely something I'd like to see happen too - my Tube/T1 controller likes to crash every hour or two.
Unfortunately, hardware is outside of my field - so while I could guess at how to try to hook it up to a RPi, I'm not sure I'm comfortable with breaking new ground in that area.
Why a RPi though? Even a BBB is really underpowered for hosting something of this hashrate... and RPi is far worse :|

[ManeBjorn]

I agree they are under powered.
The issue is a stand alone controller that is not a mess like the BE200 is needed.
Since FriedCat cannot be bothered to open source that controller even a bit so people can fix it, it is a mess.
The sad fact is the BE200 controller is powerful but with a dodgy stratum implementation and crashing out all the time it makes it not a fun unit.
I am not sure what a good replacement would be for it though.  We thought to start with a RPi and see what can be done.

Ah I see so it is not direct support just the Proxy support.
MultiMiner and BFGMiner do work well with Proxy's which is nice.
Thanks for clearing that up.
We are looking to get an RPi working as a controller with them directly as opposed to being a proxy.
Thanks for the great work. 

This is definitely something I'd like to see happen too - my Tube/T1 controller likes to crash every hour or two.
Unfortunately, hardware is outside of my field - so while I could guess at how to try to hook it up to a RPi, I'm not sure I'm comfortable with breaking new ground in that area.
Why a RPi though? Even a BBB is really underpowered for hosting something of this hashrate... and RPi is far worse :|

[Luke-Jr]

I agree they are under powered.
The issue is a stand alone controller that is not a mess like the BE200 is needed.
Since FriedCat cannot be bothered to open source that controller even a bit so people can fix it, it is a mess.
The sad fact is the BE200 controller is powerful but with a dodgy stratum implementation and crashing out all the time it makes it not a fun unit.
I am not sure what a good replacement would be for it though.  We thought to start with a RPi and see what can be done.

I expect the Novena to be a potentially nice platform to host miners due to its FPGA (which can be programmed to accelerate the host-side work production).
Unfortunately, it's $550 - quite a bit more pricy than a RPi/BBB.
Maybe someone with hardware experience would know how to build a cheaper/stripped-down version (ideally compatible so the Novena can be used as a dev platform).

[ManeBjorn]

That does look like a beast for sure.
It is something to look into you are right.
With more powerful hardware coming out there is a large need for something like the Novena.

I agree they are under powered.
The issue is a stand alone controller that is not a mess like the BE200 is needed.
Since FriedCat cannot be bothered to open source that controller even a bit so people can fix it, it is a mess.
The sad fact is the BE200 controller is powerful but with a dodgy stratum implementation and crashing out all the time it makes it not a fun unit.
I am not sure what a good replacement would be for it though.  We thought to start with a RPi and see what can be done.

I expect the Novena to be a potentially nice platform to host miners due to its FPGA (which can be programmed to accelerate the host-side work production).
Unfortunately, it's $550 - quite a bit more pricy than a RPi/BBB.
Maybe someone with hardware experience would know how to build a cheaper/stripped-down version (ideally compatible so the Novena can be used as a dev platform).

[stef942]

Hello, what means this message :

Code:

coinbase check : incomplete coinbase for payout check

How to disable it please ?

[Tad3j]

Use

/#xnsub or /#skipcbcheck after pool URI ...

[nwoolls]

Use

/#xnsub or /#skipcbcheck after pool URI ...

Just /#skipcbcheck AFAIK, the other is for NiceHash support.

[J4bberwock]

Hey Luke,

Have you made any progress with the S1 drivers?  There are a few guys trying to get an S1 blade to work with BFGMiner or CGMiner; in the later pages they are either seeing errors or all 32 chips aren't running:

https://bitcointalk.org/index.php?topic=671128.140

Bryan

No, I was waiting on docs...
It's interesting that it even begins to work with that driver at all.
Any idea what the real S1 host system is using for its USB chipset? The VID/PID doesn't come up in /usr/src/linux

As far as I know, it's the pic32 chip that is doing the UART>USB job.
Using a third party USB>UART converter with cp2102 allows me to have it hashing (more or less) recognised as a U1/U2 since it's using the cp2102 too.
At the moment, only 8 chips are found with the default bfgminer build, and it seems I can't adjust frequency.

The USB_ID is sent from the MCU via Pin 41 to the USB controller which in turn basically the UARTS are technically two USB ports just with a couple extra things as temp and fan control.
Pins 3 RX and 5 TX on the UART with Pin 1 being Fan/Power Management and Pin 4 being ground, 6 and 7 being temperature control pin 8 is ground. So with all this mind the UART plays a dual function, hosting the USB/Power and then the temperature control settings.

Connecting TX and RX allows the boards to hash, but the multichain mode used with S1 doesn't allow full speed hashing while using the U1/U2 driver (single chain).
Adding multichain mode from bitmain's code to BFGminer is beyond my kowledge, but it should allow us to use almost any controler instead of the proprietary one used.

For some reasons, it looks like I'm unable to set the frequency.
Is there a way to change the "default frequency" setting in the code to be sure the chips are receiving it?

Temp sensing and fan speed can be ignored if you don't mind the noise or if you use a quieter fan as I do.

Still looking for some help on the software side.
I'll have a few spare prototypes of control boards next week if needed.

[akk123]

Hi, all

i have problem with my zeus hurricane X3 which worked for a while without a hitch but now i get a problem as below.

 [2014-09-22 14:34:38] Started bfgminer 4.8.0
 [2014-09-22 14:34:38] Found ZUS 0aa at \\.\COM3
 [2014-09-22 14:34:38] Probing for an alive pool
 [2014-09-22 14:34:38] Testing pool stratum+tcp://us-east.multipool.us:3355
 [2014-09-22 14:34:38] HTTP request failed: Protocol stratum+tcp not supported or disabled in libcurl
 [2014-09-22 14:34:39] Stratum authorisation success for pool 0
 [2014-09-22 14:34:39] Pool 0 stratum+tcp://us-east.multipool.us:3355 alive
 [2014-09-22 14:34:39] Pool 0 is hiding block contents from us
 [2014-09-22 14:34:39] Network difficulty changed to 69 (498.2Mh)
 [2014-09-22 14:34:39] New block: ...bd9baea5 #229261 diff 69 (498.2Mh
)
 [2014-09-22 14:34:39] Stratum from pool 0 detected new block
 [2014-09-22 14:34:39] ZUS 0: Opened \\.\COM3
 [2014-09-22 14:34:44] ZUS 0aa: Comms error (werr=1)
 [2014-09-22 14:34:44] ZUS 0aa: Failed to reopen on \\.\COM3
 [2014-09-22 14:34:44] ZUS 0aa failure, attempting to reinitialize
 [2014-09-22 14:34:44] ZUS 0aa: Failed to reopen on \\.\COM3
 [2014-09-22 14:34:44] ZUS 0aa failure, disabling!
 [2014-09-22 14:34:44] ZUS 0aa being disabled

Anyone can kindly comment what it is as i got no clue? Thank you

NOTE: my .bat file as below
bfgminer --scrypt -o stratum+tcp://us-east.multipool.us:3355 -u x -p x --scan noauto -S zeusminer:\\.\COM3 -d zeusminer@\\.\COM3 --set zeusminer:chips=64 --set zeusminer:clock=300 --set zeusminer:ignore_golden_nonce=1