Ubuntu 11.10 'frozen' at satellite C640

Hi friends, a few months ago I have installed ubuntu-amd64 11.10 oeniric oncelot at satellite C640. which type of laptop is the AMD processor. I use the boot flash to install it and the condition of the laptop is connect to the internet with the lan network. No problem in the install this version of Ubuntu on the laptop. however, if the internet connection is disconnected a few seconds later the laptop to freeze (hang). this is the same as when booting or GDM login every few seconds the laptop also be frozen. I've search on the internet, visit ubuntu forums but no satisfactory answer. I kept trying over and over again, such as update ubuntu, network blacklist, finally after several failures can be concluded that the lan network which causes the laptop to be frozen.

If you are experiencing as above, I have a trick that does not resolve the problem but can make the laptop's not frozen. There are two ways:

  1. If at first install ubuntu at Satellite C640 does not connect to the internet, do not functionalized or disable the lan network. You can set it in the BIOS press the F2 key to search for Lan Network. In the lan network change the option from enable to disable.
  2. If you connect to the Internetn and successfully install it. Do not forget to disconnect the network and select the option also disable the network before shutdown the laptop. This option can be found on the lan icon near user acount.

Now, your laptop will not have frozen to the matter. however, if you find a better solution please contact me with your comments on this post. thank you for all .....

Note :
This's specification the laptop Satellite C640D :

  • Memory 2GB up to 8GB DDR3 Video Type ATI RADEON HD6310-256MB
  • Processor AMD Fusion DualCore E350-1.6 GHz
  • Display Size 14″ wide LED Crystal
  • Hard drive 500GB SATA
  • Optical Drive 8X CD/DVD Burner (Dual Layer DVD+/-R Drive)
  • Connetivity Integrated 802.11 a/b/g, 10/100Mbps Ethernet Expansion
  • 3 x USB Port, WebCam, CardReader, RGB Port O/S Provided DOS
  • Battery Type Lion 6 cell Rechargeable Lithium-ion
  • Battery Dimension (WHD) 342 x 25.5/31.9 x 245 mm
  • Weight 2.2 kg

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