Slow wired internet connection on Realtek RTL8168-8111 (Rev 6)
Solution 1
I had the same problem with my Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06). Looking at the output from ifconfig you have a lot of dropped packages. Changing to a driver from Realtek worked for me:
I believe you have to do this every time you install a kernel update. Also note the comment from Jonathan on the same page.
Solution 2
I have the same Ethernet adapter and have updated the drivers already but that didn't fix the issue. I tried disabling IPv6 and that also didn't help... but after some digging I found a reference to the /etc/nsswitch.conf file and changing the order of the "hosts:" line.
Originally, it was in the order
hosts: files mdns4_minimal [NOTFOUND=return] wins dns mdns4
I changed it so that dns came after files and after rebooting the difference was night and day - DNS lookups are much faster and websites load immediately instead of being stuck at "Sending Request..." in Chrome (or doing nothing in FF).
hosts: files dns mdns4_minimal [NOTFOUND=return] wins mdns4
I'm not sure if this will affect anything else negatively but I haven't had any problems with it since - I am able to browse my local network and mount Windows shares without any problems at all.
I hope this is helpful!
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Mark
Updated on September 18, 2022Comments
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Mark almost 2 years
I keep on seeing issues people are having with their wireless. I am having an issue with being wired into my router. I installed Ubuntu 11.10 the other day, on my custom PC. The motherboard I have installed on this PC is an ASUS P8H61-M.
The issue I am having is with my speed. I have a dual boot, windows 7 and the new Ubuntu. On my Windows install I am getting test speeds from Speakeasy at 17Mbps and actual downloads around 2-3MB/s. With Ubuntu, I am getting test speeds from Speakeasy at 1.14Mbps and actual downloads around 60KB/s.
I have disabled IPv6 and am no using GoogleDNS for my DNS, but it hasn't resolved the issue. I have scanned my router (WRT54GS Linksys) to disable IPv6 connections, and I am not seeing any option for that. I cannot figure out why I am getting such sluggish internet connection. Any help to resolve would be great!
I performed an iconfig -a with these results:
mark@Mark-ASUS:~$ ifconfig -a eth0 Link encap:Ethernet HWaddr f4:6d:04:d1:2c:4e inet addr:192.168.1.103 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::f66d:4ff:fed1:2c4e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:21888 errors:0 dropped:21888 overruns:0 frame:21888 TX packets:21068 errors:0 dropped:90 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:26348337 (26.3 MB) TX bytes:2217140 (2.2 MB) Interrupt:46 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:7 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:952 (952.0 B) TX bytes:952 (952.0 B)
My specs are:
mark@Mark-ASUS:~$ sudo lspci -nn 04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06) 06:00.0 PCI bridge [0604]: ASMedia Technology Inc. Device [1b21:1080] (rev 01)
udev information:
KERNEL[11.351405] add /devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/eth0 (net) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/eth0 SUBSYSTEM=net INTERFACE=eth0 IFINDEX=2 SEQNUM=1542 UDEV [11.363905] add /devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/eth0 (net) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/eth0 SUBSYSTEM=net INTERFACE=eth0 IFINDEX=2 SEQNUM=1542 ID_VENDOR_FROM_DATABASE=Realtek Semiconductor Co., Ltd. ID_MODEL_FROM_DATABASE=RTL8111/8168B PCI Express Gigabit Ethernet controller ID_BUS=pci ID_VENDOR_ID=0x10ec ID_MODEL_ID=0x8168 ID_MM_CANDIDATE=1
dmesg information:
[ 2.855982] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded [ 2.856366] r8169 0000:04:00.0: eth0: RTL8168b/8111b at 0xffffc9000064c000, f4:6d:04:d1:2c:4e, XID 0c900800 IRQ 46 [ 12.540956] r8169 0000:04:00.0: eth0: link down [ 12.540961] r8169 0000:04:00.0: eth0: link down [ 12.541173] ADDRCONF(NETDEV_UP): eth0: link is not ready
I took out a lot of information that did not pertain to eth0, because the previous edits wouldn't save. If I need any more information, let me know. I would love to get this resolved. The other issue I am noticing is sometimes my connection disconnects all together, for about a minute, then it reconnects.
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Oli over 12 yearsHi Mark. I have Revision 3 of this network controller, using the same driver and it works flawlessly. I know that's not a very helpful comment but it might help if this turns out to be a Revision 6 specific issue. Btw, IPv6 shouldn't affect throughput, only the initial connection latency. I suspect this is more a problem with the driver and this particular version of the hardware.
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JanD about 12 yearsI got the same problem and were not able to solve it as well.
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Octavian A. Damiean over 12 yearsWelcome to Ask Ubuntu! It would be nice if you could find the website and post a more detailed explanation.
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Mark over 12 yearsI have now added the link.