linux-kernel - Thinkpad DOCK insufficient power for USB ports

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Date:	Fri, 29 Jul 2016 16:51:47 +0200 (CEST)
From:	<msemler@...nam.cz>
To:	<linux-kernel@...r.kernel.org>
Subject: Thinkpad DOCK insufficient power for USB ports

Hello gentlemans,

I have problem with my Lenovo X230 laptop together with Lenovo Mini Dock 3
with USB3.0
http://shop.lenovo.com/cz/cs/laptops/thinkpad/x-series/x230/
http://www.lenovoquickpick.com/mex/accessory/433715U/thinkpad-mini-dock-series-3-with-usb

laptop docks fine but I have problem with wrongly reported USB power for
dock ports:

[ 4688.787446] thinkpad_acpi: docked into hotplug port replicator
[ 4688.883040] usb 2-1.8: new high-speed USB device number 13 using ehci-pci
[ 4688.975349] usb 2-1.8: New USB device found, idVendor=0000,
idProduct=0000
[ 4688.975353] usb 2-1.8: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[ 4688.975665] hub 2-1.8:1.0: USB hub found
[ 4688.975726] hub 2-1.8:1.0: 7 ports detected
[ 4688.975846] hub 2-1.8:1.0: insufficient power available to use all
downstream ports

The computer is properly connected to the power:

root@...nkPad-X230:/home/cijoml# cat /sys/class/power_supply/AC/online
1

However I can't use even original USB3 Net adapter which requires on 180mA:

[ 5418.679943] usb 2-1.8.5: new high-speed USB device number 15 using
ehci-pci
[ 5418.773363] usb 2-1.8.5: New USB device found, idVendor=17ef,
idProduct=7205
[ 5418.773382] usb 2-1.8.5: New USB device strings: Mfr=1, Product=2,
SerialNumber=6
[ 5418.773384] usb 2-1.8.5: Product: Thinkpad USB LAN
[ 5418.773385] usb 2-1.8.5: Manufacturer: Lenovo
[ 5418.773386] usb 2-1.8.5: SerialNumber: 000001000000
[ 5418.773624] usb 2-1.8.5: rejected 2 configurations due to insufficient
available bus power
[ 5418.773626] usb 2-1.8.5: no configuration chosen from 2 choices


Can anyone please help?
It is probably wrongly detected.

I use Ubuntu 16.04 with Vanilla Linux kernel 4.7

Thank you

Best regards

Michal