EMC2 won't start, errors

[ 120.382236] vmap allocation for size 2101248 failed: use vmalloc=<size> to increase size.
[ 120.382238] RTAI[malloc]: failed to initialize the global heap (size=2097152 bytes).

also earlier:
[ 6.653814] vmap allocation for size 2101248 failed: use vmalloc=<size> to increase size
might be related

Pretty clear trying to allocate 2101248 bytes from a 2097152 pool wont work
but why this is happening just on your system, I have no idea (above my pay grade)

Hmm. This might have to do with the fact that my computer has two Nvidia 8800GTX graphics cards eating all the vmalloc space (I dual boot Ubuntu and Windows 7). I guess I'll be researching how to increase vmalloc size.

Solved.

Add "vmalloc=512M" between the quotes in the "GRUB_CMDLINE_LINUX_DEFAULT=" line so as to make something like:

That number probably could have been less, like 256M.
Don't forget to update Grub:

Hi Folks - I too am experiencing grief with starting EMC and I don't have a clue what to do. Fresh install from the latest Live CD.
At the desktop I select EMC from the applications menu and choose the Sherline 3 axis inch simulation and here is what I get (attached text file). Looking at the file but not really understanding what I'm seeing, it appears that evrything is failing.
Sure could use some guru input - Thanx

Hi

wiki.linuxcnc.org/cgi-bin/wiki.pl?Troubl..._t_run_missing_lapic

You should find the error messages quoted in this link familiar and it tells you how to fix

regards

Thanks ArcEye - I take a look-see later today and keep us posted.