Ubuntu – Installing Ubuntu on early 2011 Macbook pro using USB Stick: ”i8042 No Controller”

macsystem-installationusb

I have an early 2011 macbook pro.

My primary hard drive location has a mac os X yosemite installation.

I replaced the optical drive with a secondary hard drive, which has two partitions created with bootcamp: (1) Mac OS X Mavericks and (2) Windows 7

I followed official ubuntu instructions for creating a bootable USB stick on Mac OS X.

When I reboot the system holding the option key, two new boot disks appear with the USB logo. Both titled "EFI Boot". I click on one and it takes me to the Ubuntu menu. When I select "try ubuntu" in order to use a live installation, I then get the message ''i8042 No Controller'' and the system hangs. I then have to use the power button to reboot. Any idea as to how to get around this?

If I select install ubuntu, I get the same error.

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