I have an ASROCK G31M-S which uses Intel G31 graphics.
Ubuntu says my graphics chipset is G33.
If the link you provided is for your motherboard then you have an Intel G31. I am not sure what you mean when you say Ubuntu says your graphics chipset is a G33. If Ubuntu does "say" this, then it is slightly confused.
If you look at the entries for the G31 & G33 chipsets in this table on Wikipedia, you can see that they are very similar. The primary difference between them is that the G31 uses the ICH7 southbridge and only supports 4 GB of RAM. The G33 uses an ICH9, can support 8 GB of RAM, and also can support DDR3 RAM.
In particular, both the G31 & G33 provide the same integrated graphics: Intel GMA 3100. In other words, there is no difference between the G31 & the G33 in terms of the type of graphics supported.
If the hang at the _
prompt occurs after the GRUB boot menu (or if you do not see a GRUB boot menu), then you might see if using the nomodeset
kernel boot option helps.
Adding the nomodeset
kernel option for a single boot
You can edit the boot instructions for the GRUB menu entry to add the nomodeset
option to see if it corrects your graphics problem.
- Boot to the GRUB boot menu. An example of the menu is shown in the screenshot below.
Note: If you do not see the GRUB boot menu when you boot, try pressing and holding the shift key immediately after the BIOS portion of the boot completes.
- Select (highlight) the GRUB boot menu entry for the Ubuntu kernel you wish to boot.
- Press e to edit the GRUB boot commands for the selected boot menu entry.
Look near the bottom of the list of commands for lines similar to
linux /boot/vmlinuz-3.2.0-24-generic root=UUID=bc6f8146-1523-46a6-8b\
6a-64b819ccf2b7 ro quiet splash
initrd /boot/initrd.img-3.2.0-24-generic
Change the middle line in (4) by adding the kernel boot parameter nomodeset
to the end of the line (i.e. after ro quiet splash
).
For this example you would change
6a-64b819ccf2b7 ro quiet splash
to
6a-64b819ccf2b7 ro quiet splash nomodeset
Without leaving this GRUB edit screen, press either Ctrl+X or F10 to boot using the modified kernel options.
Note: These changes are not persistent. Any change to the kernel boot options made this way will only affect the next boot and only if you start that boot by pressing either Ctrl+X or F10 while still in GRUB edit mode.