我没有安装任何其他东西，但它需要 92 秒才能启动。一开始它显示“以不安全模式启动”。我该怎么做才能让它在 7-10 秒内启动，就像我在 Ubuntu 广告中看到的那样？
我有一台东芝 e45-b4200，配备 i5 CPU 和 6 GB RAM。我删除了预装的 Windows 8.1 系统并将其全部替换为 Ubuntu 14.04 LTS。
以下是输出dmesg：
[ 0.567633] brd: module loaded
[ 0.568152] loop: module loaded
[ 0.568336] libphy: Fixed MDIO Bus: probed
[ 0.568340] tun: Universal TUN/TAP device driver, 1.6
[ 0.568341] tun: (C) 1999-2004 Max Krasnyansky
[ 0.568402] PPP generic driver version 2.4.2
[ 0.568441] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.568450] ehci-pci: EHCI PCI platform driver
[ 0.568544] ehci-pci 0000:00:1d.0: EHCI Host Controller
[ 0.568549] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 1
[ 0.568560] ehci-pci 0000:00:1d.0: debug port 2
[ 0.572470] ehci-pci 0000:00:1d.0: cache line size of 64 is not supported
[ 0.572484] ehci-pci 0000:00:1d.0: irq 23, io mem 0xf7f1b000
[ 0.583015] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[ 0.583059] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.583061] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.583063] usb usb1: Product: EHCI Host Controller
[ 0.583065] usb usb1: Manufacturer: Linux 3.16.0-33-generic ehci_hcd
[ 0.583066] usb usb1: SerialNumber: 0000:00:1d.0
[ 0.583197] hub 1-0:1.0: USB hub found
[ 0.583202] hub 1-0:1.0: 2 ports detected
[ 0.583354] ehci-platform: EHCI generic platform driver
[ 0.583366] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.583373] ohci-pci: OHCI PCI platform driver
[ 0.583388] ohci-platform: OHCI generic platform driver
[ 0.583398] uhci_hcd: USB Universal Host Controller Interface driver
[ 0.583524] xhci_hcd 0000:00:14.0: xHCI Host Controller
[ 0.583529] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
[ 0.583609] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported
[ 0.583626] xhci_hcd 0000:00:14.0: irq 56 for MSI/MSI-X
[ 0.583684] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.583686] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.583687] usb usb2: Product: xHCI Host Controller
[ 0.583689] usb usb2: Manufacturer: Linux 3.16.0-33-generic xhci_hcd
[ 0.583691] usb usb2: SerialNumber: 0000:00:14.0
[ 0.583916] hub 2-0:1.0: USB hub found
[ 0.583929] hub 2-0:1.0: 9 ports detected
[ 0.586349] xhci_hcd 0000:00:14.0: xHCI Host Controller
[ 0.586352] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
[ 0.586375] usb usb3: New USB device found, idVendor=1d6b, idProduct=0003
[ 0.586376] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.586377] usb usb3: Product: xHCI Host Controller
[ 0.586379] usb usb3: Manufacturer: Linux 3.16.0-33-generic xhci_hcd
[ 0.586380] usb usb3: SerialNumber: 0000:00:14.0
[ 0.586542] hub 3-0:1.0: USB hub found
[ 0.586549] hub 3-0:1.0: 4 ports detected
[ 0.587649] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[ 0.589471] i8042: Detected active multiplexing controller, rev 1.1
[ 0.590431] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 0.590435] serio: i8042 AUX0 port at 0x60,0x64 irq 12
[ 0.590454] serio: i8042 AUX1 port at 0x60,0x64 irq 12
[ 0.590469] serio: i8042 AUX2 port at 0x60,0x64 irq 12
[ 0.590485] serio: i8042 AUX3 port at 0x60,0x64 irq 12
[ 0.590742] mousedev: PS/2 mouse device common for all mice
[ 0.591042] rtc_cmos 00:01: RTC can wake from S4
[ 0.591195] rtc_cmos 00:01: rtc core: registered rtc_cmos as rtc0
[ 0.591232] rtc_cmos 00:01: alarms up to one month, y3k, 242 bytes nvram, hpet irqs
[ 0.591283] device-mapper: uevent: version 1.0.3
[ 0.591385] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: [email protected]
[ 0.591406] Intel P-state driver initializing.
[ 0.591417] Intel pstate controlling: cpu 0
[ 0.591453] Intel pstate controlling: cpu 1
[ 0.591464] Intel pstate controlling: cpu 2
[ 0.591506] Intel pstate controlling: cpu 3
[ 0.591534] Consider also installing thermald for improved thermal control.
[ 0.591538] ledtrig-cpu: registered to indicate activity on CPUs
[ 0.591542] EFI Variables Facility v0.08 2004-May-17
[ 0.595369] TCP: cubic registered
[ 0.595477] NET: Registered protocol family 10
[ 0.595701] NET: Registered protocol family 17
[ 0.595713] Key type dns_resolver registered
[ 0.595987] Loading compiled-in X.509 certificates
[ 0.597024] Loaded X.509 cert 'Magrathea: Glacier signing key: 2526eefe32c958b4cd85ca5fbfebeda175d1b218'
[ 0.597043] registered taskstats version 1
[ 0.598569] Key type trusted registered
[ 0.600286] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input3
[ 0.601186] Key type encrypted registered
[ 0.601193] AppArmor: AppArmor sha1 policy hashing enabled
[ 0.601197] ima: No TPM chip found, activating TPM-bypass!
[ 0.601211] evm: HMAC attrs: 0x1
[ 0.601577] Magic number: 7:990:184
[ 0.601616] thermal LNXTHERM:00: hash matches
[ 0.601630] acpi device:43: hash matches
[ 0.601694] rtc_cmos 00:01: setting system clock to 2015-03-24 15:09:49 UTC (1427209789)
[ 0.601747] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 0.601748] EDD information not available.
[ 0.601825] PM: Hibernation image not present or could not be loaded.
[ 0.611681] ACPI: Battery Slot [BAT0] (battery present)
[ 0.612674] Freeing unused kernel memory: 1352K (ffffffff81d1c000 - ffffffff81e6e000)
[ 0.612677] Write protecting the kernel read-only data: 12288k
[ 0.614134] Freeing unused kernel memory: 560K (ffff880002774000 - ffff880002800000)
[ 0.615098] Freeing unused kernel memory: 500K (ffff880002b83000 - ffff880002c00000)
[ 0.616539] atkbd serio0: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
[ 0.616543] atkbd serio0: Use 'setkeycodes 7c ' to make it known.
[ 0.627246] systemd-udevd[116]: starting version 204
[ 0.639386] sdhci: Secure Digital Host Controller Interface driver
[ 0.639389] sdhci: Copyright(c) Pierre Ossman
[ 0.649209] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[ 0.649216] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 0.651519] ahci 0000:00:1f.2: version 3.0
[ 0.651652] ahci 0000:00:1f.2: irq 57 for MSI/MSI-X
[ 0.655445] r8169 0000:03:00.0: irq 58 for MSI/MSI-X
[ 0.655635] r8169 0000:03:00.0 eth0: RTL8168g/8111g at 0xffffc90000022000, 00:71:c2:13:df:0a, XID 0c000880 IRQ 58
[ 0.655638] r8169 0000:03:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
[ 0.667096] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 2 ports 6 Gbps 0x1 impl SATA mode
[ 0.667101] ahci 0000:00:1f.2: flags: 64bit ncq led clo only pio slum part deso sadm sds apst
[ 0.667492] scsi0 : ahci
[ 0.667625] scsi1 : ahci
[ 0.667689] ata1: SATA max UDMA/133 abar m2048@0xf7f1a000 port 0xf7f1a100 irq 57
[ 0.667691] ata2: DUMMY
[ 0.816439] atkbd serio0: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
[ 0.816444] atkbd serio0: Use 'setkeycodes 7c ' to make it known.
[ 0.895394] usb 2-3: new full-speed USB device number 2 using xhci_hcd
[ 0.987402] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 1.016631] atkbd serio0: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
[ 1.016636] atkbd serio0: Use 'setkeycodes 7c ' to make it known.
[ 1.019140] ata1.00: ATA-8: TOSHIBA MQ01ABD075, AX1P4M, max UDMA/100
[ 1.019145] ata1.00: 1465149168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[ 1.021092] ata1.00: configured for UDMA/100
[ 1.021307] scsi 0:0:0:0: Direct-Access ATA TOSHIBA MQ01ABD0 4M PQ: 0 ANSI: 5
[ 1.021732] sd 0:0:0:0: [sda] 1465149168 512-byte logical blocks: (750 GB/698 GiB)
[ 1.021767] sd 0:0:0:0: [sda] Write Protect is off
[ 1.021770] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 1.021772] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 1.021781] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.024755] usb 2-3: New USB device found, idVendor=8087, idProduct=07dc
[ 1.024759] usb 2-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.142879] sda: sda1 sda2 sda3
[ 1.143223] sd 0:0:0:0: [sda] Attached SCSI disk
[ 1.191606] usb 2-6: new high-speed USB device number 3 using xhci_hcd
[ 1.216763] atkbd serio0: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
[ 1.216767] atkbd serio0: Use 'setkeycodes 7c ' to make it known.
[ 1.365444] usb 2-6: New USB device found, idVendor=13d3, idProduct=5652
[ 1.365448] usb 2-6: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[ 1.365450] usb 2-6: Product: TOSHIBA Web Camera - HD
[ 1.365452] usb 2-6: Manufacturer: Azurewave
[ 1.365454] usb 2-6: SerialNumber: NULL
[ 1.426603] atkbd serio0: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
[ 1.426607] atkbd serio0: Use 'setkeycodes 7c ' to make it known.
[ 1.479862] usb 1-1: new high-speed USB device number 2 using ehci-pci
[ 1.527784] tsc: Refined TSC clocksource calibration: 2394.456 MHz
[ 1.603461] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[ 1.616293] usb 1-1: New USB device found, idVendor=8087, idProduct=8000
[ 1.616297] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.616702] hub 1-1:1.0: USB hub found
[ 1.616777] hub 1-1:1.0: 8 ports detected
[ 1.629047] atkbd serio0: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
[ 1.629055] atkbd serio0: Use 'setkeycodes 7c ' to make it known.
[ 1.888259] usb 1-1.1: new full-speed USB device number 3 using ehci-pci
[ 1.983417] usb 1-1.1: New USB device found, idVendor=046d, idProduct=c52b
[ 1.983421] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.983423] usb 1-1.1: Product: USB Receiver
[ 1.983425] usb 1-1.1: Manufacturer: Logitech
[ 2.204781] random: init urandom read with 101 bits of entropy available
[ 2.528853] Switched to clocksource tsc
[ 2.571107] random: nonblocking pool is initialized
[ 2.607710] psmouse serio4: synaptics: Touchpad model: 1, fw: 8.1, id: 0x1e2b1, caps: 0xd00123/0x840300/0x126800, board id: 2987, fw id: 1595020
[ 2.607717] psmouse serio4: synaptics: Toshiba Satellite E45-B detected, limiting rate to 40pps.
[ 2.644878] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio4/input/input11
[ 4.496692] Adding 6199292k swap on /dev/sda3. Priority:-1 extents:1 across:6199292k FS
[ 5.110143] systemd-udevd[304]: starting version 204
[ 5.770108] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[ 5.856627] wmi: Mapper loaded
[ 5.862766] toshiba_bluetooth: Detected Toshiba ACPI Bluetooth device - installing RFKill handler
[ 5.862870] toshiba_bluetooth: Re-enabling Toshiba Bluetooth
[ 5.927819] hidraw: raw HID events driver (C) Jiri Kosina
[ 6.047236] mei_me 0000:00:16.0: irq 59 for MSI/MSI-X
[ 6.107596] lp: driver loaded but no devices found
[ 6.174045] ppdev: user-space parallel port driver
[ 6.392242] [drm] Initialized drm 1.1.0 20060810
[ 6.405816] cfg80211: Calling CRDA to update world regulatory domain
[ 6.415891] Bluetooth: Core ver 2.19
[ 6.415905] NET: Registered protocol family 31
[ 6.415906] Bluetooth: HCI device and connection manager initialized
[ 6.415912] Bluetooth: HCI socket layer initialized
[ 6.415913] Bluetooth: L2CAP socket layer initialized
[ 6.415919] Bluetooth: SCO socket layer initialized
[ 6.444932] AVX2 version of gcm_enc/dec engaged.
[ 6.497895] usbcore: registered new interface driver btusb
[ 6.512590] Bluetooth: hci0: read Intel version: 370710010002030d00
[ 6.624679] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.0.2.3.d.bseq
[ 6.667616] Intel(R) Wireless WiFi driver for Linux, in-tree:
[ 6.667619] Copyright(c) 2003- 2014 Intel Corporation
[ 6.667666] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[ 6.667800] iwlwifi 0000:02:00.0: irq 60 for MSI/MSI-X
[ 6.694473] [drm] Memory usable by graphics device = 2048M
[ 6.694478] checking generic (e0000000 7f0000) vs hw (e0000000 10000000)
[ 6.694480] fb: switching to inteldrmfb from EFI VGA
[ 6.694524] Console: switching to colour dummy device 80x25
[ 6.694610] [drm] Replacing VGA console driver
[ 6.716035] i915 0000:00:02.0: irq 61 for MSI/MSI-X
[ 6.716047] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 6.716048] [drm] Driver supports precise vblank timestamp query.
[ 6.716077] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 6.732751] Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated
[ 6.736676] [drm] VBT doesn't support DRRS
[ 6.755962] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
[ 6.796758] fbcon: inteldrmfb (fb0) is primary device
[ 6.796839] Console: switching to colour frame buffer device 240x67
[ 6.796859] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 6.796861] i915 0000:00:02.0: registered panic notifier
[ 6.808203] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 6.808285] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input12
[ 6.808376] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[ 7.278097] media: Linux media interface: v0.10
[ 7.282924] cfg80211: World regulatory domain updated:
[ 7.282927] cfg80211: DFS Master region: unset
[ 7.282929] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 7.282932] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 7.282934] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 7.282936] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 7.282937] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 7.282939] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 7.371719] Linux video capture interface: v2.00
[ 7.442266] usbcore: registered new interface driver usbhid
[ 7.442270] usbhid: USB HID core driver
[ 7.526523] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:1d.0-1.1/input2
[ 7.582670] input: Logitech Unifying Device. Wireless PID:1028 as /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.1/1-1.1:1.2/0003:046D:C52B.0003/0003:046D:C52B.0004/input/input13
[ 7.582855] logitech-djdevice 0003:046D:C52B.0004: input,hidraw1: USB HID v1.11 Mouse [Logitech Unifying Device. Wireless PID:1028] on usb-0000:00:1d.0-1.1:1
[ 7.587558] snd_hda_intel 0000:00:03.0: enabling device (0000 -> 0002)
[ 7.587699] snd_hda_intel 0000:00:1b.0: enabling device (0000 -> 0002)
[ 7.587855] snd_hda_intel 0000:00:1b.0: irq 62 for MSI/MSI-X
[ 7.595044] snd_hda_intel 0000:00:03.0: irq 63 for MSI/MSI-X
[ 7.615331] sound hdaudioC1D0: autoconfig: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[ 7.615334] sound hdaudioC1D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 7.615336] sound hdaudioC1D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[ 7.615337] sound hdaudioC1D0: mono: mono_out=0x0
[ 7.615338] sound hdaudioC1D0: inputs:
[ 7.615340] sound hdaudioC1D0: Mic=0x19
[ 7.615341] sound hdaudioC1D0: Internal Mic=0x12
[ 7.620809] input: HDA Intel HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/sound/card0/input14
[ 7.621082] input: HDA Intel HDMI HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.0/sound/card0/input15
[ 7.621229] input: HDA Intel HDMI HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.0/sound/card0/input16
[ 7.629814] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 3160, REV=0x164
[ 7.629864] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 7.630086] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 7.741667] intel_rapl: Found RAPL domain package
[ 7.741672] intel_rapl: Found RAPL domain core
[ 7.741674] intel_rapl: Found RAPL domain uncore
[ 7.741677] intel_rapl: Found RAPL domain dram
[ 7.773563] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 7.807446] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card1/input17
[ 7.808178] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card1/input18
[ 7.824964] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[ 8.269557] uvcvideo: Found UVC 1.00 device TOSHIBA Web Camera - HD (13d3:5652)
[ 8.272061] input: TOSHIBA Web Camera - HD as /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/input/input19
[ 8.272163] usbcore: registered new interface driver uvcvideo
[ 8.272166] USB Video Class driver (1.1.1)
[ 9.517288] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
[ 11.257075] init: failsafe main process (680) killed by TERM signal
[ 14.154778] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 14.154783] Bluetooth: BNEP filters: protocol multicast
[ 14.154792] Bluetooth: BNEP socket layer initialized
[ 14.277817] audit: type=1400 audit(1427209803.160:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=813 comm="apparmor_parser"
[ 14.277825] audit: type=1400 audit(1427209803.160:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cupsd" pid=813 comm="apparmor_parser"
[ 14.278363] audit: type=1400 audit(1427209803.164:4): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=813 comm="apparmor_parser"
[ 14.461726] Bluetooth: RFCOMM TTY layer initialized
[ 14.461736] Bluetooth: RFCOMM socket layer initialized
[ 14.461742] Bluetooth: RFCOMM ver 1.11
[ 14.910532] init: cups main process (832) killed by HUP signal
[ 14.910543] init: cups main process ended, respawning
[ 17.550503] audit: type=1400 audit(1427209806.432:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/lightdm/lightdm-guest-session" pid=892 comm="apparmor_parser"
[ 17.550512] audit: type=1400 audit(1427209806.432:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="chromium" pid=892 comm="apparmor_parser"
[ 17.550839] audit: type=1400 audit(1427209806.432:7): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="chromium" pid=892 comm="apparmor_parser"
[ 17.552347] audit: type=1400 audit(1427209806.432:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/telepathy/mission-control-5" pid=896 comm="apparmor_parser"
[ 17.552355] audit: type=1400 audit(1427209806.432:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/telepathy/telepathy-*" pid=896 comm="apparmor_parser"
[ 17.552359] audit: type=1400 audit(1427209806.432:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="pxgsettings" pid=896 comm="apparmor_parser"
[ 17.552364] audit: type=1400 audit(1427209806.432:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="sanitized_helper" pid=896 comm="apparmor_parser"
[ 18.214359] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 18.214578] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 18.225599] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 18.431540] r8169 0000:03:00.0 eth0: link down
[ 18.431588] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 18.716480] init: alsa-restore main process (997) terminated with status 99
[ 25.676234] wlan0: authenticate with 00:21:d8:36:3a:00
[ 25.678595] wlan0: send auth to 00:21:d8:36:3a:00 (try 1/3)
[ 25.685781] wlan0: authenticated
[ 25.687318] wlan0: associate with 00:21:d8:36:3a:00 (try 1/3)
[ 25.697114] wlan0: RX AssocResp from 00:21:d8:36:3a:00 (capab=0x401 status=0 aid=212)
[ 25.700041] wlan0: associated
[ 25.700061] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 25.701058] wlan0: deauthenticating from 00:21:d8:36:3a:00 by local choice (Reason: 2=PREV_AUTH_NOT_VALID)
[ 25.708772] wlan0: authenticate with 00:21:d8:36:3a:00
[ 25.710311] wlan0: send auth to 00:21:d8:36:3a:00 (try 1/3)
[ 25.710709] cfg80211: Calling CRDA to update world regulatory domain
[ 25.712251] wlan0: authenticated
[ 25.713252] cfg80211: World regulatory domain updated:
[ 25.713255] cfg80211: DFS Master region: unset
[ 25.713257] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 25.713259] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 25.713261] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 25.713263] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 25.713264] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 25.713266] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 25.715301] wlan0: associate with 00:21:d8:36:3a:00 (try 1/3)
[ 25.721220] wlan0: RX AssocResp from 00:21:d8:36:3a:00 (capab=0x401 status=0 aid=213)
[ 25.722022] wlan0: associated
[ 26.018067] iwlwifi 0000:02:00.0: Time Event end notification failure
[ 26.086999] init: plymouth-upstart-bridge main process ended, respawning
[ 26.093896] init: plymouth-upstart-bridge main process (1170) terminated with status 1
[ 26.093908] init: plymouth-upstart-bridge main process ended, respawning
[ 35.738639] wlan0: deauthenticating from 00:21:d8:36:3a:00 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 35.741489] cfg80211: Calling CRDA to update world regulatory domain
[ 35.743325] cfg80211: World regulatory domain updated:
[ 35.743329] cfg80211: DFS Master region: unset
[ 35.743330] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 35.743332] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 35.743333] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 35.743335] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 35.743336] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 35.743337] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 45.286689] audit_printk_skb: 123 callbacks suppressed
[ 45.286693] audit: type=1400 audit(1427209834.144:53): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=2039 comm="apparmor_parser"
[ 45.286701] audit: type=1400 audit(1427209834.144:54): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2039 comm="apparmor_parser"
[ 45.287069] audit: type=1400 audit(1427209834.144:55): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2039 comm="apparmor_parser"
[ 65.368360] compiz[1856]: segfault at 65756c6176 ip 00007f103e0a4d84 sp 00007fff6aefa370 error 4 in libdbusmenu-glib.so.4.0.12[7f103e09d000+1a000]
[ 112.076949] wlan0: authenticate with 00:0f:34:a0:4f:10
[ 112.078607] wlan0: send auth to 00:0f:34:a0:4f:10 (try 1/3)
[ 112.080114] wlan0: authenticated
[ 112.081012] wlan0: associate with 00:0f:34:a0:4f:10 (try 1/3)
[ 112.083874] wlan0: RX AssocResp from 00:0f:34:a0:4f:10 (capab=0x401 status=0 aid=73)
[ 112.087287] wlan0: associated
[ 112.737109] audit: type=1400 audit(1427209901.540:56): apparmor="DENIED" operation="file_inherit" profile="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=2727 comm="nm-dhcp-client." lport=52225 family="inet" sock_type="dgram" protocol=17
[ 112.737123] audit: type=1400 audit(1427209901.540:57): apparmor="DENIED" operation="file_inherit" profile="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=2727 comm="nm-dhcp-client." lport=43333 family="inet6" sock_type="dgram" protocol=17
[ 123.847277] audit: type=1400 audit(1427209912.644:58): apparmor="DENIED" operation="file_inherit" profile="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=3013 comm="nm-dhcp-client." lport=52225 family="inet" sock_type="dgram" protocol=17
[ 123.847288] audit: type=1400 audit(1427209912.644:59): apparmor="DENIED" operation="file_inherit" profile="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=3013 comm="nm-dhcp-client." lport=43333 family="inet6" sock_type="dgram" protocol=17
[ 175.171576] systemd-hostnamed[3247]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 305.785103] init: upstart-udev-bridge main process (294) terminated with status 1
[ 305.785113] init: upstart-udev-bridge main process ended, respawning
[ 305.785198] init: upstart-socket-bridge main process (534) terminated with status 1
[ 305.785205] init: upstart-socket-bridge main process ended, respawning
[ 305.785267] init: upstart-file-bridge main process (704) terminated with status 1
[ 305.785273] init: upstart-file-bridge main process ended, respawning
[ 489.994877] audit: type=1400 audit(1427210278.409:60): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cups-browsed" pid=12145 comm="apparmor_parser"
[ 490.231588] audit: type=1400 audit(1427210278.645:61): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cups-browsed" pid=12184 comm="apparmor_parser"
[ 491.630579] audit: type=1400 audit(1427210280.041:62): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=12204 comm="apparmor_parser"
[ 491.630823] audit: type=1400 audit(1427210280.041:63): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=12204 comm="apparmor_parser"
[ 491.676616] audit: type=1400 audit(1427210280.089:64): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=12241 comm="apparmor_parser"
[ 491.676623] audit: type=1400 audit(1427210280.089:65): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=12241 comm="apparmor_parser"
[ 491.677084] audit: type=1400 audit(1427210280.089:66): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=12241 comm="apparmor_parser"
[ 500.400990] audit: type=1400 audit(1427210288.805:67): apparmor="DENIED" operation="signal" profile="/usr/sbin/cupsd" pid=12242 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
[ 500.400998] audit: type=1400 audit(1427210288.805:68): apparmor="DENIED" operation="signal" profile="/usr/sbin/cupsd" pid=12242 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
[ 500.401003] audit: type=1400 audit(1427210288.805:69): apparmor="DENIED" operation="signal" profile="/usr/sbin/cupsd" pid=12242 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
[ 500.401008] audit: type=1400 audit(1427210288.805:70): apparmor="DENIED" operation="signal" profile="/usr/sbin/cupsd" pid=12242 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
[ 500.401012] audit: type=1400 audit(1427210288.805:71): apparmor="DENIED" operation="signal" profile="/usr/sbin/cupsd" pid=12242 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
[ 516.852809] audit: type=1400 audit(1427210305.245:72): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/bin/evince" pid=16192 comm="apparmor_parser"
[ 516.864345] audit: type=1400 audit(1427210305.257:73): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="sanitized_helper" pid=16192 comm="apparmor_parser"
[ 516.865139] audit: type=1400 audit(1427210305.257:74): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/bin/evince-previewer" pid=16192 comm="apparmor_parser"
[ 516.879928] audit: type=1400 audit(1427210305.273:75): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="sanitized_helper" pid=16192 comm="apparmor_parser"
[ 516.880497] audit: type=1400 audit(1427210305.273:76): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/bin/evince-thumbnailer" pid=16192 comm="apparmor_parser"
[ 516.895850] audit: type=1400 audit(1427210305.289:77): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="sanitized_helper" pid=16192 comm="apparmor_parser"答案1
您的 WLAN 存在一些问题，导致其他服务需要等待很长时间，因为它们需要网络准备就绪。如果您停用系统范围的 WLAN，它将不会在启动时启动，您应该会获得大大改善的启动时间。然后您必须在登录时连接。
当然，您会希望找出问题的原因并加以解决，但只需停用 wlan 就应该可以解决启动缓慢的具体问题。