Install the card after you get UBUNTU (see google) on a bootable CD or DVD. That's the LIVE VERSION so no install is required. That way you can install the card and boot from the LiveCD/DVD and test it in another OS.

That can answer if it's just the usual OS/driver issue.

Ask the machine's maker for an OS install plan so I can see if they missed something like chipset drivers. That is, I am encountering folk that install Windows but didn't know about the rest of the dozen drivers, BIOS updates and more.