Comment 6 for bug 493220

It happens because of division by zero in round_div() function, here's a backtrace from gdb:

Program received signal SIGFPE, Arithmetic exception.
0x08048cc4 in round_div (num=0, den=0) at rovclock.c:180
180 return (num + (den / 2)) / den;
Current language: auto; currently minimal
(gdb) bt
#0 0x08048cc4 in round_div (num=0, den=0) at rovclock.c:180
#1 0x08049166 in pll_info (rovclock=0xbfbfe798) at rovclock.c:258
#2 0x08049c79 in main (argc=2, argv=0xbfbfe858) at rovclock.c:467

This software is from 2005~2006, perhaps it does not support newer video cards properly.