My next suggestion would be to check the amount of video memory the card has. The requirements state you need a minimum of 64MB. You can check it by running the following in a terminal, it will list a lot of text and you will probably have to scroll back through it to find the information you are looking for.
The amount of memory will be listed under "VGA compatible controller" or similar. It will look like the following.
Code:
lspci -vThe amount of memory will be listed under "VGA compatible controller" or similar. It will look like the following.
Code:
Memory at 40000000 (32-bit, prefetchable) [size=256M]
“I have not failed. I’ve just found 10,000 ways that won’t work.” - Thomas Edison