I wanted two network cards in my SFF PC, so bought a cheap one from Ebay. I plugged the card in, and hoped that it would 'just work' - no such luck.

It was detected at boot time - the following lines from dmesg :

[ 0.134880] pci 0000:10:00.0: [10ec:8169] type 00 class 0x020000
[ 0.134901] pci 0000:10:00.0: reg 0x10: [io 0x1100-0x11ff]
[ 0.134909] pci 0000:10:00.0: reg 0x14: [mem 0xf0600000-0xf06000ff]
[ 0.134945] pci 0000:10:00.0: reg 0x30: [mem 0x00000000-0x0001ffff pref]
[ 0.134965] pci 0000:10:00.0: supports D1 D2
[ 0.134967] pci 0000:10:00.0: PME# supported from D1 D2 D3hot D3cold

...

[ 1.438417] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[ 1.438527] r8169 0000:10:00.0 (unnamed net_device) (uninitialized): not PCI Express
[ 1.438785] r8169 0000:10:00.0 eth0: RTL8169sb/8110sb at 0xffffc90001bac000, 00:e0:4c:44:07:a1, XID 10000000 IRQ 20
[ 1.438787] r8169 0000:10:00.0 eth0: jumbo features [frames: 7152 bytes, tx checksumming: ok]
[ 1.475447] r8169 0000:10:00.0 enp16s0: renamed from eth0

It is listed as "DISABLED" by lshw :

*-network DISABLED description: Ethernet interface product: RTL8169 PCI Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:10:00.0 logical name: enp16s0 version: 10 serial: 00:e0:4c:44:07:a1 size: 10Mbit/s capacity: 1Gbit/s width: 32 bits clock: 66MHz capabilities: pm bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=32 link=no maxlatency=64 mingnt=32 multicast=yes port=MII speed=10Mbit/s resources: irq:20 ioport:1100(size=256) memory:f0600000-f06000ff memory:f0620000-f063ffff

And it is not listed in the output of ifconfig... The output from lsmod includes:

Module Size Used by
r8169 81920 0

Is this card supported by (Ubuntu 16.10) Linux? If so, what hoop do I need to jump through to get it recognised (i.e. listed when I run ifconfig)?

1 Answer

It's well known that the r8169 driver is flawed. This is a fix for that, but I don't know if it'll solve your problem... until we try. Lets install the driver that works...

In the terminal application...

Type the following commands, one at a time:

sudo apt-get update
sudo apt-get install dkms
sudo apt-get install r8168-dkms
sudo ifconfig enp16s0 up

Then reboot your computer.

If that doesn't fix the problem, check that you've got a good CAT6 ethernet cable. You should probably see a blinking green or yellow LED near where the cable plugs into the card. If you need to troubleshoot further, plug a new/different ethernet cable directly from the new ethernet card, directly to the router or dsl/cable modem (bypassing all other wiring and switches/hubs).

11

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