can you post your computer specifications .
your gtx 580 is supported by the nvidia propitiatory 310 driver
but your gtx 580 might be unsupported by the "nouveau" open nvidia driver that is used by default
the nvidia driver section
a lot has changed since 11.2
that version hit it's end of life back on "May 12th 2011 "
the old 2d ONLY nv driver is not the default any more
the opensource 3d "nouveau" is not used by default
you might need to add a line to the grub2 boot line
that also he changed GREATLY since 11.2
hit "e" during the 8 sec. countdown before it boots
ad to the kernel line
" nomodset " ( without the "" )