ERROR LOG: Feb 18 17:30:41 localhost kernel: vboxdrv: Warning: 2.6.31+ kernel detected. Most likely the hardware performance Feb 18 17:30:41 localhost kernel: vboxdrv: counter framework which can generate NMIs is active. You have to prevent Feb 18 17:30:41 localhost kernel: vboxdrv: the usage of hardware performance counters by Feb 18 17:30:41 localhost kernel: vboxdrv: echo 2 > /proc/sys/kernel/perf_counter_paranoid Feb 18 17:32:39 localhost kernel: intel ips 0000:00:1f.6: failed to get i915 symbols, graphics turbo disabled Feb 18 17:32:42 localhost NetworkManager[4074]: supplicant_interface_acquire: assertion `mgr_state == NM_SUPPLICANT_MANAGER_STATE_IDLE' failed Feb 18 17:32:44 localhost bluetoothd[4112]: input-headset driver probe failed for device 00:0F:DE:9B:73:BF =============== kernel.log: Feb 18 17:30:41 localhost kernel: vboxdrv: Trying to deactivate the NMI watchdog permanently... Feb 18 17:30:41 localhost kernel: vboxdrv: Warning: 2.6.31+ kernel detected. Most likely the hardware performance Feb 18 17:30:41 localhost kernel: vboxdrv: counter framework which can generate NMIs is active. You have to prevent Feb 18 17:30:41 localhost kernel: vboxdrv: the usage of hardware performance counters by Feb 18 17:30:41 localhost kernel: vboxdrv: echo 2 > /proc/sys/kernel/perf_counter_paranoid Feb 18 17:30:41 localhost kernel: vboxdrv: Found 4 processor cores. Feb 18 17:30:41 localhost kernel: vboxdrv: fAsync=0 offMin=0x243 offMax=0x3292 Feb 18 17:30:41 localhost kernel: vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'. Feb 18 17:30:41 localhost kernel: vboxdrv: Successfully loaded version 3.2.4 (interface 0x00140001). ================== messages.log: Feb 17 17:30:01 localhost -- MARK -- Feb 18 17:30:41 localhost kernel: VBoxDrv: dbg - g_abExecMemory=ffffffffa0ff15a0 Feb 18 17:30:41 localhost kernel: vboxdrv: fAsync=0 offMin=0x243 offMax=0x3292 Feb 18 17:30:41 localhost kernel: vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.