Comment 2 for bug 172563

Thanks for your bug report.

The problem that you get sounds like a Linux kernel problem ( some people experience this problem with nvidia SATA controllers ). Can you try to reproduce the boot problem with quiet
and splash option disabled? You can do this by following these steps :

1. Reboot your computer
2. Just after the BIOS screen, if the Grub boot menu does not appear, press the Esc key to make it appear before the short countdown finishes.
3. Press "e" to edit the boot options
4. Go to the line that start with "kernel" and press "e" again
5. Remove "quiet" and "splash"
6. Press "b" to boot your computer with the modified parameters.

You will now see all the outputs from the Linux kernel during the boot time before Xserver is started. If the boot process is stopped, you should see error/suspect outputs. Can you copy these outputs here in that bug report?

Can you open a terminal and copy that command : lspci -nnvv > lspci-nnvv.txt
This will create a lspci-nnvv.txt file that you can attach to this bug report.

If you have some additionnal place on your hard drive, you may want to try the latest ubuntu Hardy alpha 4 release which fixed various bugs like your one. If you can confirm that it is fixed in Hardy, you won't have to do all previous steps. Thanks for your contribution to ubuntu.