Created attachment 735177 [details]
supportconfig

Anker USB 3.0 ethernet adapter randomly disconnects.

Seems a known issue but I don't see any fixes:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1333003
https://bugzilla.redhat.com/show_bug.cgi?id=1238617

link comes up after inserting adapter into USB3 port,  generate some minor
traffic (nature of traffic not relevant,  ftp/scp/ssh all reproduce) and link
drops. amount of time it takes varies. supposedly doesn't occur on USB2 but
I've not tried this.

latest 4.11.8-2-default kernel but it's been broken for a fair while.   

Hardware in question is a Macbook Pro (USB3) but I don't think it is on above
redhat/ubuntu bugs.

dmesg below, support config attached

[11493.769864] usb 4-1: new SuperSpeed USB device number 3 using xhci_hcd
[11493.796691] usb 4-1: New USB device found, idVendor=0b95, idProduct=1790
[11493.796696] usb 4-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[11493.796699] usb 4-1: Product: AX88179
[11493.796701] usb 4-1: Manufacturer: ASIX Elec. Corp.
[11493.796703] usb 4-1: SerialNumber: 0000000000015E
[11494.131928] ax88179_178a 4-1:1.0 eth0: register 'ax88179_178a' at
usb-0000:00:14.0-1, ASIX AX88179 USB 3.0 Gigabit Ethernet, 00:00:0d:00:ee:30
[11494.153818] ax88179_178a 4-1:1.0 enp0s20u1: renamed from eth0
[11494.204082] IPv6: ADDRCONF(NETDEV_UP): enp0s20u1: link is not ready
[11494.529718] IPv6: ADDRCONF(NETDEV_UP): enp0s20u1: link is not ready
[11497.127891] ax88179_178a 4-1:1.0 enp0s20u1: ax88179 - Link status is: 1
[11497.133370] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s20u1: link becomes ready
[12021.041777] xhci_hcd 0000:00:14.0: Cannot set link state.
[12021.041788] usb usb4-port1: cannot disable (err = -32)
[12021.041793] usb 4-1: USB disconnect, device number 3
[12021.042026] ax88179_178a 4-1:1.0 enp0s20u1: unregister 'ax88179_178a'
usb-0000:00:14.0-1, ASIX AX88179 USB 3.0 Gigabit Ethernet
[12021.042053] ax88179_178a 4-1:1.0 enp0s20u1: Failed to read reg index 0x0002:
-19
[12021.042056] ax88179_178a 4-1:1.0 enp0s20u1: Failed to write reg index
0x0002: -19
[12021.061697] ax88179_178a 4-1:1.0 enp0s20u1 (unregistered): Failed to write
reg index 0x0002: -19
[12021.061699] ax88179_178a 4-1:1.0 enp0s20u1 (unregistered): Failed to write
reg index 0x0001: -19
[12021.061700] ax88179_178a 4-1:1.0 enp0s20u1 (unregistered): Failed to write
reg index 0x0002: -19