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rated 0 times [  13] [ 0]  / answers: 1 / hits: 32135  / 1 Year ago, fri, december 16, 2022, 10:31:36

My ethernet-based network connection doesn't stay up consistently. I'm running a ping against the gateway and it will:




  • Work for a minute

  • Freeze, time out, or give multi-second response times

  • Repeat



If it's stuck and I disable/enable networking through the network manager applet everything will work fine again for a minute. After 280 packets transmitted I'm getting 41% packet loss. I've tried a different cable and connection to the gateway but this had no effect. The distance to the gateway is just about 3 feet.



Seems to work fine if I switch over to Windows, but Ubuntu is my main OS and I can't even use it right now as I depend on the network.



My setup...




  • OS: Ubuntu 11.04, dual-booting Windows 7

  • Mobo: Gigabyte Z68X-UD4-B3

  • CPU: Intel Core i7 2600K



Edit



A little clarification... Network Manager is still showing me as connected, but I am unable to reach to gateway or anything beyond. At no point does NM suggest the connection is lost and calling ifconfig shows that I still have an IP address.



I tried connecting to a different gateway with a different cable and the same problem arises.



As requested:



lspci | grep -i eth

07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)



dmesg | tail -f

[   14.024709] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro,commit=0

[   14.026443] EXT4-fs (sda7): re-mounted. Opts: commit=0

[   14.176101] hda-intel: IRQ timing workaround is activated for card #2. Suggest a bigger bdl_pos_adj.

[   23.917731] eth0: no IPv6 routers present

[  726.109697] r8169 0000:07:00.0: eth0: link up

[  733.169494] r8169 0000:07:00.0: eth0: link up

[  753.930119] r8169 0000:07:00.0: eth0: link up

[  880.787332] r8169 0000:07:00.0: eth0: link up

[ 1159.161283] r8169 0000:07:00.0: eth0: link up

[ 1406.623550] r8169 0000:07:00.0: eth0: link up


Edit



@roland-taylor: Network is always available under Windows. Pings do not timeout, applications do not complain of no network availability, large downloads are not interrupted or slowed.


More From » 11.04
 Answers
6

Download the official realtek driver.



http://www.realtek.com/downloads/downloadsView.aspx?Langid=1&PNid=5&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2



Then remove the r8169 module from the linux kernel.



# rmmod r8169



<Quick install with proper kernel settings>

Unpack the tarball :

# tar vjxf r8168-8.aaa.bb.tar.bz2

Change to the directory:

# cd r8168-8.aaa.bb

If you are running the target kernel, then you should be able to do :

# ./autorun.sh (as root or with sudo)

You can check whether the driver is loaded by using following commands.

# lsmod | grep r8168

# ifconfig -a

If there is a device name, ethX, shown on the monitor, the linux

driver is loaded. Then, you can use the following command to activate

the ethX.

# ifconfig ethX up


Finally, blacklist the r8169 driver add the following to /etc/modprobe.d/blacklist.conf:



#blacklist r8169 driver

blacklist r8169


I found it at http://www.rvdavid.net/how-to-get-gigabit-speeds-from-rtl81118168b-pci-express-gigabit-ethernet-controller-on-ubuntu-linux/ and it works. Now it's all good with net speed.


[#44814] Saturday, December 17, 2022, 1 Year  [reply] [flag answer]
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