Quote from: BagBits on November 23, 2015, 05:44:33 PM

I have a brand new Avalon Nano 3 usb mining stick.
I've ser up p2pool (I don't think there's a problem with that)
I'm trying to start bfgminer with

bfgminer -S ICA:/dev/bus/usb/005/012 -o stratum+tcp://127.0.0.1:9332 -O userxxx:passxxx --set-device ICA:baud=115200 --set-device ICA:reopen=timeout --set-device ICA:work_division=1 --set-device ICA:fpga_count=1 --set-device ICA:probe_timeout=100 --set-device ICA:timing=0.22 --api-listen

Obviously bfminer finds /dev/bus/usb/005/012 (iv'e set group to lp, same result anyhow if i run bfgminer as root)
bfminer somehow does not connect properly to the miner and reports:

[2015-11-21 15:29:26] /dev/bus/usb/005/012: tcflush failed: Inappropriate ioctl for device

if I leave out the timeout parameter (ICA:probe_timeout=100) the error output becomes:

[2015-11-22 14:17:14] /dev/bus/usb/005/013: tcgetattr failed: Inappropriate ioctl for device
[2015-11-22 14:17:14] /dev/bus/usb/005/013: tcflush failed: Inappropriate ioctl for device
[2015-11-22 14:17:14] /dev/bus/usb/005/013: tcgetattr failed: Inappropriate ioctl for device
[2015-11-22 14:17:14] /dev/bus/usb/005/013: tcflush failed: Inappropriate ioctl for device
[2015-11-22 14:17:15] /dev/bus/usb/005/013: tcgetattr failed: Inappropriate ioctl for device
[2015-11-22 14:17:15] /dev/bus/usb/005/013: tcflush failed: Inappropriate ioctl for device

I seem to have solved this myself now. For anyone who needs to know. There seems to be a systemd-uvevd bug in Fedora. usb_modeswitch is not executed when the USB stick is inserted. Thus the USB is not treated as a serial device. To fix it i used the following workaround (executed as root)

usb_modeswitch -v29f1 -p33f3 -R
chgrp lp /dev/tty*
chmod g+r /dev/tty*

usb_mode_switch says:

Look for default devices ...
product ID matched
Found devices in default mode (1)
Access device 005 on bus 005
Current configuration number is 1
Use interface number 0

USB description data (for identification)
-------------------------
Manufacturer: CANAAN
Product: Avalon nano
Serial No.: 20150518
-------------------------
Warning: no switching method given. See documentation
Reset USB device .
Device was reset
-> Run lsusb to note any changes. Bye!

Thus I start bfgminer (running with p2pool at stratum+tcp://127.0.0.1:9332) with tty0

bfgminer \
-S ICA:/dev/tty0 -o stratum+tcp://127.0.0.1:9332 \
-O user_xxx:passwd_xxx \
--set-device ICA:baud=115200 \
--set-device ICA:reopen=timeout \
--set-device ICA:work_division=1 \
--set-device ICA:fpga_count=1 \
--set-device ICA:probe_timeout=100 \
--set-device ICA:timing=0.22 \
--api-listen

BagBits

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