A lot of us Toshiba users (and some lenovo users have been having trouble getting ubuntu online due to a powersaving bug. This bug still exists in the final release, and thus I'm writing this HOWTO for anyone who is having trouble getting started.
After a fresh install of maverick:
1 - When booting, hold left shift to access the grub menu. (If you have a dual-boot setup, then the menu might show up automatically)
2 - Highlight the ubuntu entry and press e to edit the options.
3 - Add 'intel_idle.max_cstate=0' after the words 'quiet splash'
4 - Hit ctrl-x to boot the computer.
5 - Once you've booted into ubuntu, press alt-F2 to open a run dialog and enter
6 - look for the line that reads
gksu gedit /etc/default/grub
this should be the 9th line. Modify it to read:
7 - Save the file and exit.
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0"
8 - Open a terminal and type the following:
This is all the steps. Now everytime you boot the computer, this option will be active.