[Solved] Ethernet not working (RTL8101E/RTL8102E)

Kolibry · 2014-01-08 10:51:05

Hey everyone,

I have issues with a new netbook, I just can't get the ethernet to work at all...

Here are some results I had :

lspci -v :

05:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller (prog-if 30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. Device 103b
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at fe900000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_hcd

06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)
        Subsystem: ASUSTeK Computer Inc. Device 103b
        Flags: bus master, fast devsel, latency 0, IRQ 44
        I/O ports at e000 [size=256]
        Memory at d0004000 (64-bit, prefetchable) [size=4K]
        Memory at d0000000 (64-bit, prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: r8169
        Kernel modules: r8169

lsmod | grep r8169 :

lsmod | grep r8169
r8169                  51000  0 
mii                     3375  1 r8169

dmesg | grep enp6s0 :

[dmesg | grep enp6s0
[    8.585373] systemd-udevd[146]: renamed network interface eth0 to enp6s0
[   13.273391] r8169 0000:06:00.0 enp6s0: link down
[   13.273518] IPv6: ADDRCONF(NETDEV_UP): enp6s0: link is not ready
[   13.273526] r8169 0000:06:00.0 enp6s0: link down
[  123.323406] r8169 0000:06:00.0 enp6s0: link down
[  123.323566] IPv6: ADDRCONF(NETDEV_UP): enp6s0: link is not ready
[  159.553248] r8169 0000:06:00.0 enp6s0: link down
[  159.553396] IPv6: ADDRCONF(NETDEV_UP): enp6s0: link is not ready

sudo dhcpcd enp6s0 :

sudo dhcpcd enp6s0
[sudo] password for kolibry: 
dhcpcd[6703]: version 6.1.0 starting
dhcpcd[6703]: enp6s0: waiting for carrier
dhcpcd[6703]: timed out
dhcpcd[6703]: exited

Thanks for any help !

Last edited by Kolibry (2014-01-08 17:55:37)

Neburski · 2014-01-08 11:54:09

Please put the commands you tried with their output in code blocks (each command a separate code block).

Also can you check if your driver got loaded properly (see the wiki).

Kolibry · 2014-01-08 12:37:36

Ok, didn't check my message, I thought i had. Edited now.

Althogugh, you probably didn't see my commands because it says the driver is loaded, that's what i find strange...

Neburski · 2014-01-08 12:56:37

Just some thoughts:

Does "dmesg | grep r8169" give any warnings / errors?
Is the cable plugged in properly? Maybe you could unplug and replug the cable on both sides (pc + router/modem) to ensure it's plugged in correctly.
Did you try to bring your ethernet link up manually (i.e. see wiki), your dmesg output states that your link is down. As long as the link remains down you can't obtain an ip address.

Kolibry · 2014-01-08 13:58:00

Ok, ther's something I don't understand at all. I tried many times to plug out and in, it never changed a thing. Now I tried to do the same at my router side, and it seems to work. The thing is, ethernet was still working all this time with my other laptops...

dmesg | grep R8169 nows seems right :

dmesg | grep r8169
[    6.983166] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[    6.983703] r8169 0000:06:00.0: irq 44 for MSI/MSI-X
[    6.984293] r8169 0000:06:00.0 eth0: RTL8105e at 0xf98a8000, c8:60:00:1b:84:18, XID 00a00000 IRQ 44
[    9.575195] r8169 0000:06:00.0 enp6s0: link down
[    9.575246] r8169 0000:06:00.0 enp6s0: link down
[   11.576238] r8169 0000:06:00.0 enp6s0: link up

Let's see if it's for long term. If so, I will mark it as Solved. Thanks for your help

Neburski · 2014-01-08 14:43:12

Kolibry wrote:

Ok, ther's something I don't understand at all. I tried many times to plug out and in, it never changed a thing. Now I tried to do the same at my router side, and it seems to work. The thing is, ethernet was still working all this time with my other laptops...

It's not an uncommon issue where one side isn't plugged in properly, but most people tend to forget about the router side of the cable.
Don't forget to edit the title of your first post to mark it solved.

Arch Linux

#1 2014-01-08 10:51:05

[Solved] Ethernet not working (RTL8101E/RTL8102E)

#2 2014-01-08 11:54:09

Re: [Solved] Ethernet not working (RTL8101E/RTL8102E)

#3 2014-01-08 12:37:36

Re: [Solved] Ethernet not working (RTL8101E/RTL8102E)

#4 2014-01-08 12:56:37

Re: [Solved] Ethernet not working (RTL8101E/RTL8102E)

#5 2014-01-08 13:58:00

Re: [Solved] Ethernet not working (RTL8101E/RTL8102E)

#6 2014-01-08 14:43:12

Re: [Solved] Ethernet not working (RTL8101E/RTL8102E)

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