How to fix USB stops working problem in Ubuntu

This tutorial will explain how to fix USB stops working problem in Ubuntu


Note: The success (or otherwise) of the following solution will depend on your hardware and possibly which version of *buntu you are using. Feel free to add your feedback to this thread and alternative solutions

Open a terminal type

      gksudo gedit /boot/grub/menu.lst

You will be asked for your password - don’t worry if your password doesn’t show, this is normal. Just type in your password as usual, and it will be accepted.

When the editor opens, scroll down to the line which reads

      # defoptions=quiet splash

and change it to read

      # defoptions=quiet splash acpi=force irqpoll

Save the file, exit the editor

Now you need to update the grub using the following command

      sudo update-grub

Finally Restart your computer.

For Grub2 Users (Ubuntu Karmic) follow this procedure

     gksudo gedit /etc/default/grub

Find the line

     GRUB_CMDLINE_LINUX=””

and place the boot uptions there, like

  GRUB_CMDLINE_LINUX=”acpi=force irqpoll”

Save and exit the file

After that, update the bootloader with:

   sudo update-grub

Categories: Ubuntu