Realtek Semiconductor - ubuntu 14.04 - slow internet

[praseodym]

Ok, now change the driver:

sudo modprobe -rfv r8169
sudo modprobe -v r8168
echo "blacklist r8169" | sudo tee -a /etc/modprobe.d/blacklist.conf
sudo depmod -a
sudo update-initramfs -u

Check:

dmesg | grep r8
grep r8 /etc/modprobe.d/*
ifconfig -a
cat /etc/modules

[Tania_Petsouka]

I repeated the proccess and seems much much better now.

Thanks a lot!

[Vladlenin5000]

Keep testing and if you're satisfied with the results please use the thread tools to mark your thread as solved.

[paul147]

Hello, I'm trying to activate the full potential of my network adapter (RTL8111G) and I followed the steps at the top of this thread. However when I rebooted there was no network connection whatsoever. When I tried to load up the appropriate driver I get:

$ sudo modprobe -v r8168
modprobe: FATAL: Module r8168 not found.

It didn't seem that any errors were thrown during the execution of the commands in the second post, but I could have missed something.

For now I'll work with 100Mb/s, but I would like to get up to full speed if possible.

Thanks.

Update: I thought I might go back through the process in case something had gone wrong and I get the following error:

$ sudo dkms add -m r8168-dkms -v 8.038.00
Error! DKMS tree already contains: r8168-dkms-8.038.00
You cannot add the same module/version combo more than once.

[praseodym]

Try

sudo dkms autoinstall

[paul147]

Done. Before I reboot, here are the results.

~$ sudo dkms autoinstall
[sudo] password for paul: 

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....
'make' -C src/ all........
cleaning build area....

DKMS: build completed.

r8168.ko:
Running module version sanity check.

Good news! Module version 8.038.00-NAPI for r8168.ko
exactly matches what is already found in kernel 3.13.0-29-generic.
DKMS will not replace this module.
You may override by specifying --force.

depmod....

DKMS: install completed.

[praseodym]

No need to reboot:

sudo modprobe -rfv r8169
sudo modprobe -v r8168
sudo service network-manager restart

[paul147]

Okay, that worked. Thanks! The r8168 module is now loaded, however my connection speed is still reported as 100Mb/s (my switch confirms this). Any suggestions?

[praseodym]

Any cable/switch/hardware needs to be set-up for Gigabit. Please check

sudo apt-get install ethtool
sudo ethtool eth0

[paul147]

~$ sudo ethtool eth0
Settings for eth0:
    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Advertised pause frame use: Symmetric Receive-only
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    MDI-X: Unknown
    Supports Wake-on: pumbg
    Wake-on: g
    Current message level: 0x00000033 (51)
                   drv probe ifdown ifup
    Link detected: yes