since no one has replied, what do you mean the files are there?
how many /dev/svga entries do you have?
2) I do not use mint but are you using a xorg.conf or a XF86Free.conf?
3) if the program is small can you post it so others can spot the error or if its larger can you link to it from a online storage?
a free one to try if you have none is
www.ripway.com
4) do you have any video errors such as found in /.xsession-errors if you have such a beast