Post
Topic
Board Mining (Altcoins)
Re: Official FutureBit Moonlander 2 Driver and Support Thread
by
Bill48105
on 23/12/2018, 23:20:51 UTC
EDIT:
Figured it out.. It's a Samsung tablet I had plugged into the computer charging..  Roll Eyes  It's powered off but shows up as USB Serial Device (COM5) in device manager.. If I unplug the tablet, or uninstall COM5 the error goes away.. Seems bfgminer sees COM5 & tries to mine with my tablet Cheesy  I'll leave this post up in case anyone else runs into this issue.  I bet other devices could result in errors as well.. I figure there's a way to disable COM5 on command line so I'll look into that or just keep it unplugged.

ORIGINAL POST:
Anyone know what this means?
Code:
FutureBit Write error: Invalid argument

Odd thing is it mines fine other than complaining at startup and repeatedly while mining:
Code:
[2018-12-23 18:03:41] FutureBit Write error: Invalid argument
 [2018-12-23 18:03:42] Accepted 0795fdcc MLD 0  Diff 514u/244u
 [2018-12-23 18:03:42] Accepted 0231393a MLD 0  Diff 1m/244u
 [2018-12-23 18:03:43] Accepted 0c411dbd MLD 0  Diff 318u/244u
 [2018-12-23 18:03:44] FutureBit Write error: Invalid argument
 [2018-12-23 18:03:44] Accepted 03873fc3 MLD 0  Diff 1m/244u
 [2018-12-23 18:03:44] Accepted 0b6289fd MLD 0  Diff 343u/244u

I've got 4 Moonlander 2's all doing the same thing, 1 alone or all together.  They work fine using same hub on rasp pi & another win10 box but 2nd win10 box giving this invalid argument error. Of course the one I want to mine with is the one giving the error.. lol

Nothing exciting in my config:
Code:
bfgminer.exe --scrypt -o stratum+tcp://pool:5555 -u user -p x -S ALL

It gives the same error if moonlander 2 plugged in directly to computer (usb2 or usb3) or in hub and in fact it gives the same error even if no moonlanders are plugged in at all.. I installed the win10 drivers listed on the 1st post: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers  About only thing I haven't tried yet is rebooting because I'm unable to conveniently at the moment but will do that once I'm able.
Thx
Bill