2x Bifury 5 GH not working properly

[mivi]

hey guys! i have some problems with my 2 bifury sticks!

first one works with 4,5 to 5 GH and the second one works with 2,5 to 3 GH and i have absolutely no idea why both dont work on 5 GH as it should

i tried to re-edit the config file but nothing changed, (ex "bxf-bits" : "54" "bxf-temp-target" : "90" [raised!])
but i figured out how i overclock my antminers up to 2GH (:lol)
and i also tried an usb2.0 hub

to my setup:

1x usb 3.0 hub with external power-supply,
2x antminer u1,
2x Bi*Fury 5GH,
2x cooling fans
all runs on cgminer 4.5.0 on slush's pool

i have absolutely no idea how i should go on, so you are my last chance here guys please help me =)

greets mivi


--edit--

i reinstalled the driver updated firmware (90°C) - still not working properly
tired both miner solo:
they are displayed as BXF 13131f2e and BXF 14141b1b, 1414... remains to be the slow one

--edit2--

when i measure the temperature of both processing chips 1 is cool - is it broken or is something wrong with the driver/firmware?

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[szmarco]

You should send a message to Bitfury to ask for help directly.
Or you can post in hardware board.

[Cyrus]

Or you can post in hardware board.

Moved this thread instead, no need for a double post.

[-ck]

Try one at a time to see if they both reach their full speed or if it's always the same device that runs slower indicating something wrong with that device. If both run full speed by themselves but not when run together then you are simply not giving them enough power. Most USB hubs don't deliver anywhere near enough for power hungry usb devices like this no matter what they advertise on the hub (there's a whole thread on suitable usb hubs).

[mivi]

thank you for your help guys you are awesome!
often it are the small things u totally forget (:lol) my hub delivers 0,9 amps/port i bought the right one (12V 5 Amps supply)
its the device itself and now ill try to contact the producer and do some stuff by myself, i will post the failure when i got it!

greets and a big thank you for your instant help

mivi

[FDRBTC]

Hello everyone.
How to configure Bifury to work most considerably?
Is there a description of the window cgminer?