netdev - Fw: [Bug 105441] New: r8152: Autonegotiation does not detect link

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Date:	Tue, 6 Oct 2015 10:31:17 +0100
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	netdev@...r.kernel.org
Subject: Fw: [Bug 105441] New: r8152: Autonegotiation does not detect link



Begin forwarded message:

Date: Sun, 4 Oct 2015 10:52:56 +0000
From: "bugzilla-daemon@...zilla.kernel.org" <bugzilla-daemon@...zilla.kernel.org>
To: "shemminger@...ux-foundation.org" <shemminger@...ux-foundation.org>
Subject: [Bug 105441] New: r8152: Autonegotiation does not detect link


https://bugzilla.kernel.org/show_bug.cgi?id=105441

            Bug ID: 105441
           Summary: r8152: Autonegotiation does not detect link
           Product: Networking
           Version: 2.5
    Kernel Version: 4.2.0-1-686-pae #1 SMP Debian 4.2.1-2 (2015-09-27)
                    i686 GNU/Linux
          Hardware: i386
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
          Assignee: shemminger@...ux-foundation.org
          Reporter: jkufner@...il.com
        Regression: No

Hardware: Thinkpad Yoga 12 and 1Gbps USB ethernet adapter from Lenovo -- lsusb:
  idVendor           0x17ef Lenovo
  idProduct          0x7205
  bcdDevice           30.00
  iManufacturer           1 Lenovo
  iProduct                2 ThinkpadUSBLAN

Link is not detected after plugging ethernet adapter into USB port -- dmesg:

[ 1458.764163] usb 2-2: new SuperSpeed USB device number 6 using xhci_hcd
[ 1458.780614] usb 2-2: New USB device found, idVendor=17ef, idProduct=7205
[ 1458.780620] usb 2-2: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 1458.780623] usb 2-2: Product: ThinkpadUSBLAN
[ 1458.780625] usb 2-2: Manufacturer: Lenovo
[ 1458.780628] usb 2-2: SerialNumber: 3C18A002BEE5
[ 1458.896539] usb 2-2: reset SuperSpeed USB device number 6 using xhci_hcd
[ 1458.939516] r8152 2-2:1.0 eth0: v1.08.1 (2015/07/28)
[ 1459.035214] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1459.495124] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 1459.541189] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

But when I do:

  ethtool -s eth0 autoneg off

It starts to work correctly -- dmesg:

[ 1528.221326] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

It worked with kernels older than 4.0 (I'm not sure about 4.0). It was broken
with 4.1. I'm using kernel from 32bit Debian.

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