Linux network cable does not recognize the problem solved. Internet sharing, modifying resolution

The following events occur on the Shenzhou f233r version Ubutun 14.04 12.04

Today to my very old notebook installed on the ubutun14.04 32, found that really slow ah, decisive change back to 12.04 appear on the internet after not recognized, network cable lights not bright problems.
The solution is as follows:

After installing the Ethtool tool, execute the command:

Configure the network port to full duplex and the highest network card support speed is available

Ethtool-s eth0 Autoneg off speed + duplex full

++++++++++++++++++++++++++++++++++++ episode +++++++++++++

VirtualBox Laptop Wi-Fi, virtual machine Internet access (Ubutun 12.04)

Connection mode Select Bridge Adapter Interface Name selection (if your notebook has a wireless card and a wired card, you need to choose according to the current way of surfing) advanced-control chip (default selection) Advanced-promiscuous mode deny advanced-access network cable Yes

Restart the virtual machine in the Select Enable network

Then in the system to click the Network icon, select the Auto Ethernet virtual Machine host configuration in a network segment, and then all can surf the internet.

+++++++++++++++++++++++++ In addition ++++++++++++++

Shenzhou f233r on version Ubutun 14.04 the settings for the installed resolution are not correct XRANDR command cannot resolve the last:

Open:/etc/default/grub
Search: #GRUB_GFXMODE =640x480
Edit: 640x480 changes to the resolution you want and cancels the previous #
Example: grub_gfxmode=1024x768
Update: sudo update-grub
Restart

The answer is from the network, infringement please tell!

Linux network cable does not recognize the problem solved. Internet sharing, modifying resolution