Hi Again, Sorry about the delay in responding. I disabled the uftdi using config as described.
(also added it to /etc/shutdown.rc as mentioned by Chris Bennett. Seemed like a good idea.) It does now seem to be disabled, the boottime message has changed to show "ugen" rather than "uftdi" i.e. > ugen1 at uhub0 port 2 "13-37.org Infinite Noise TRNG" rev 2.00/10.00 addr 3 Unfortunately the behaviour seems unchanged: > mjoelnir:software 1.07 17:39:16 # ./infnoise > Error: USB read failed FYI, "usbdevs -v" reports these two device using/being driven by ugen: > ... > Controller /dev/usb0: > addr 01: 8086:0000 Intel, xHCI root hub > super speed, self powered, config 1, rev 1.00 > driver: uhub0 > addr 02: 1050:0407 Yubico, Yubikey 4 OTP+U2F+CCID > full speed, power 30 mA, config 1, rev 4.37 > driver: uhidev0 > driver: uhidev1 > driver: ugen0 > addr 03: 0403:6015 13-37.org, Infinite Noise TRNG > full speed, power 10 mA, config 1, rev 10.00, iSerial 1337-ECA4E8A6 > driver: ugen1 > ... If it is of interest, I also uploaded the output of kdump here: https://paste.c-net.org/HallwaysFeliz It's the complete trace, about 2700 lines. I wasn't sure about adding a 1000 lines to my message here. Cheers, Robb.
