0 17:28:10 seb@precise-rtai-x86 /home/seb> linuxcnc
LINUXCNC - 2.6.0~pre~seb-ubc3-deb~63efeec
Machine configuration directory is '/home/seb/linuxcnc/configs/sim.axis'
Machine configuration file is 'axis.ini'
Starting LinuxCNC...
io started
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd loadusr io started
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
Shutting down and cleaning up LinuxCNC...
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
halcmd: hal_init() failed: -22
NOTE: 'rtapi' module must be loaded
Cleanup done
LinuxCNC terminated with an error.  You can find more information in the log:
    /home/seb/linuxcnc_debug.txt
and 
    /home/seb/linuxcnc_print.txt
as well as in the output of the shell command 'dmesg' and in the terminal



And the relevant bit from the syslog:

Jan 18 17:28:16 precise-rtai-x86 msgd:0: startup instance=inst0 pid=13206 flavor=rtai-kernel rtlevel=1 usrlevel=1 halsize=512000 shm=shmdrv gcc=4.6.3 git=unknown
Jan 18 17:28:16 precise-rtai-x86 kernel: I-pipe: head domain RTAI registered.
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[hal]: compiled with gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) .
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs DISPATCHED), ISOL_CPUS_MASK: 0).
Jan 18 17:28:16 precise-rtai-x86 kernel: SYSINFO: CPUs 2, LINUX APIC IRQ 2312, TIM_FREQ 62514702, CLK_FREQ 2095130000, CPU_FREQ 2095130000
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI_APIC_TIMER_IPI: RTAI DEFINED 2314, VECTOR 2314; LINUX_APIC_TIMER_IPI: RTAI DEFINED 2312, VECTOR 2312
Jan 18 17:28:16 precise-rtai-x86 kernel: TIMER NAME: lapic; VARIOUSLY FOUND APIC FREQs: 62514702, 62514702, 59224000
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[malloc]: global heap size = 131072 bytes, <BSD>.
Jan 18 17:28:16 precise-rtai-x86 kernel: , <uses LINUX SYSCALLs>, kstacks pool size = 524288 bytes.
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[sched]: hard timer type/freq = APIC/62514702(Hz); default timing: periodic; linear timed lists.
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[sched]: Linux timer freq = 1000 (Hz), TimeBase freq = 2095130000 hz.
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[sched]: timer setup = 999 ns, resched latency = 2943 ns.
Jan 18 17:28:16 precise-rtai-x86 kernel: ***** WARNING: GLOBAL HEAP NEITHER SHARABLE NOR USABLE FROM USER SPACE (use the vmalloc option for RTAI malloc) *****
Jan 18 17:28:16 precise-rtai-x86 kernel: RTAI[math]: loaded.
Jan 18 17:28:19 precise-rtai-x86 msgd:0: msgd:0: SIGTERM - shutting down
Jan 18 17:28:19 precise-rtai-x86 msgd:0: normal shutdown - global segment detached
Jan 18 17:28:19 precise-rtai-x86 kernel: RTAI[math]: unloaded.
Jan 18 17:28:19 precise-rtai-x86 kernel: RTAI[malloc]: unloaded.
Jan 18 17:28:19 precise-rtai-x86 kernel: RTAI[sched]: unloaded (forced hard/soft/hard transitions: traps 0, syscalls 0).
Jan 18 17:28:19 precise-rtai-x86 kernel: I-pipe: head domain RTAI unregistered.
Jan 18 17:28:19 precise-rtai-x86 kernel: RTAI[hal]: unmounted.