Quick Resolution – slow network using RTL8111/RTL8168B in Ubuntu 10.04 LTS

The slowness is due to the use of wrong kernel module (detected by the OS) for RTL8169.  To verify, issue a command:

sudo lsmod

We should be able to see a line starting with r8169.

Alternatively, another command could be used to generate the hardware profile of your machine:

sudo lshw -html > somefile.html

In that case, the resolution is simple.  Go to Realtek download site to get the appropriate Linux driver.  Expand it and follow the README inside.

After reloading the driver, use lsmod to verify if there is a line starting with r8168.

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