C.T.F. Jansen wrote:
Two messages that I'm interested in are :kernel: [ 6997.564065] sd 3:0:0:0: [sdc] tag#3 data cmplt err -71 uas-tag 4 inflight: CMDkernel: [ 6997.564108] usb 2-1.4: stat urb: status -71
I did some Google research for you and must confirm that it is really hard to find some usefull information, but it seens that the status -71 indicates an "USB Protocol Error", whatever that implies.
See https://bbs.archlinux.org/viewtopic.php?pid=1167716#p1167716 The disk dock is an USB drive?Look around for more meaningfull messages in the kernel log near the quoted lines.
Regards, Christian