我刚有了一台新的工作笔记本电脑，但是要在其上运行virtualbox却遇到了很多困难。当我尝试启动虚拟机时，它基本上无法启动虚拟机，并停留在“启动虚拟机”上
看着dmesg对我来说是非常神秘的：
dmesg | grep vbox
输出：
[Tue Feb 3 16:53:49 2015] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel
[Tue Feb 3 16:53:49 2015] vboxdrv: Found 4 processor cores.
[Tue Feb 3 16:53:49 2015] vboxdrv: fAsync=0 offMin=0xcf offMax=0xff9
[Tue Feb 3 16:53:49 2015] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
[Tue Feb 3 16:53:49 2015] vboxdrv: Successfully loaded version 4.3.20 (interface 0x001a0008).
[Tue Feb 3 16:53:49 2015] vboxpci: IOMMU not found (not registered)
[Tue Feb 3 17:08:22 2015] vboxdrv: Found 4 processor cores.
[Tue Feb 3 17:08:22 2015] vboxdrv: fAsync=0 offMin=0xd8 offMax=0x1d31
[Tue Feb 3 17:08:22 2015] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
[Tue Feb 3 17:08:22 2015] vboxdrv: Successfully loaded version 4.3.18_Ubuntu (interface 0x001a0008).
[Tue Feb 3 17:08:22 2015] vboxpci: IOMMU not found (not registered)
[Tue Feb 3 17:09:18 2015] vboxdrv: Found 4 processor cores.
[Tue Feb 3 17:09:18 2015] vboxdrv: fAsync=0 offMin=0xdb offMax=0x2436
[Tue Feb 3 17:09:18 2015] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
[Tue Feb 3 17:09:18 2015] vboxdrv: Successfully loaded version 4.3.18_Ubuntu (interface 0x001a0008).
[Tue Feb 3 17:09:18 2015] vboxpci: IOMMU not found (not registered)
[Tue Feb 3 17:09:22 2015] vboxdrv: Found 4 processor cores.
[Tue Feb 3 17:09:22 2015] vboxdrv: fAsync=0 offMin=0xd8 offMax=0xc60
[Tue Feb 3 17:09:22 2015] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
[Tue Feb 3 17:09:22 2015] vboxdrv: Successfully loaded version 4.3.18_Ubuntu (interface 0x001a0008).
[Tue Feb 3 17:09:22 2015] vboxpci: IOMMU not found (not registered)
[Tue Feb 3 17:09:46 2015] Modules linked in: vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ctr ccm pci_stub uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev arc4 media intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel cdc_mbim cdc_wdm kvm cdc_ncm cdc_acm usbnet mii btusb iwlmvm mac80211 joydev snd_hda_codec_realtek serio_raw snd_hda_codec_hdmi snd_hda_codec_generic iwlwifi lpc_ich snd_hda_intel snd_hda_controller snd_hda_codec rfcomm bnep snd_hwdep cfg80211 snd_seq_midi bluetooth snd_seq_midi_event snd_pcm 6lowpan_iphc mei_me mei shpchp snd_rawmidi snd_seq snd_seq_device snd_timer nvram snd mac_hid soundcore parport_pc ppdev nls_iso8859_1 lp parport uas usb_storage hid_generic usbhid hid dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel
[Tue Feb 3 17:09:46 2015] i915 aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i2c_algo_bit psmouse drm_kms_helper ahci e1000e libahci drm ptp pps_core wmi video [last unloaded: vboxdrv]
[Tue Feb 3 17:09:46 2015] [<ffffffffc08d3b97>] ? supdrvIOCtl+0x1437/0x2d30 [vboxdrv]
[Tue Feb 3 17:09:46 2015] [<ffffffffc08dbf99>] ? rtR0MemAllocEx+0x1a9/0x290 [vboxdrv]
[Tue Feb 3 17:09:46 2015] [<ffffffffc08cd544>] ? VBoxDrvLinuxIOCtl_4_3_18+0x124/0x230 [vboxdrv]
我已经在许多不同的工作笔记本电脑（包括上一代的同型号笔记本电脑）上安装了virtualbox，但从未遇到任何问题。
我已经从安装程序启用了虚拟化，所以这不是问题。我还多次重建了virtualbox，以防无法正确针对当前内核进行编译。
dmesg中是否有一些指向根本性缺陷的东西，或者我完全忽略的东西？
任何帮助将不胜感激，因为它使我无法完成任何令人沮丧的工作。
的VirtualBox的：4.3.18
笔记本电脑型号：Thinkpad X1 Carbon（第三代）
Ubuntu版本：14.10
uname -a：
Linux Arturis 3.16.0-30-generic＃40-Ubuntu SMP Mon Jan 12 22:06:37 UTC 2015 x86_64 x86_64 x86_64 GNU / Linux
