我刚刚安装e4rat并设置了（一个加快启动速度的程序）。现在启动速度快了很多，但是当我想关机或重启时，我的机器卡在关机屏幕上。
我该怎么做才能防止这种情况发生？
我没有在 Virtualbox 上使用 Ubuntu。Ubuntu (13.04) 是我真正的硬盘安装 PC 系统。但我已从软件中心在 Ubuntu 13.04 上安装了 Virtualbox。以下是/var/log/kern.log
Jul 5 15:50:15 my-pc-name kernel: [ 2.741138] sr 0:0:0:0: Attached scsi CD-ROM sr0
Jul 5 15:50:15 my-pc-name kernel: [ 2.741215] sr 0:0:0:0: Attached scsi generic sg0 type 5
Jul 5 15:50:15 my-pc-name kernel: [ 2.752223] scsi 0:0:1:0: Direct-Access ATA SAMSUNG SP0802N TK10 PQ: 0 ANSI: 5
Jul 5 15:50:15 my-pc-name kernel: [ 2.752340] sd 0:0:1:0: [sda] 156368016 512-byte logical blocks: (80.0 GB/74.5 GiB)
Jul 5 15:50:15 my-pc-name kernel: [ 2.752351] sd 0:0:1:0: Attached scsi generic sg1 type 0
Jul 5 15:50:15 my-pc-name kernel: [ 2.752417] sd 0:0:1:0: [sda] Write Protect is off
Jul 5 15:50:15 my-pc-name kernel: [ 2.752419] sd 0:0:1:0: [sda] Mode Sense: 00 3a 00 00
Jul 5 15:50:15 my-pc-name kernel: [ 2.752453] sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Jul 5 15:50:15 my-pc-name kernel: [ 2.788612] sda: sda1 sda2 < sda5 >
Jul 5 15:50:15 my-pc-name kernel: [ 2.788899] sd 0:0:1:0: [sda] Attached SCSI disk
Jul 5 15:50:15 my-pc-name kernel: [ 2.824219] tsc: Refined TSC clocksource calibration: 3515.547 MHz
Jul 5 15:50:15 my-pc-name kernel: [ 2.824222] Switching to clocksource tsc
Jul 5 15:50:15 my-pc-name kernel: [ 2.860181] ata3: SATA link down (SStatus 0 SControl 300)
Jul 5 15:50:15 my-pc-name kernel: [ 2.864176] ata6: SATA link down (SStatus 0 SControl 300)
Jul 5 15:50:15 my-pc-name kernel: [ 2.868179] ata5: SATA link down (SStatus 0 SControl 300)
Jul 5 15:50:15 my-pc-name kernel: [ 2.868207] ata4: SATA link down (SStatus 0 SControl 300)
Jul 5 15:50:15 my-pc-name kernel: [ 2.880172] usb 4-1: New USB device found, idVendor=0461, idProduct=0010
Jul 5 15:50:15 my-pc-name kernel: [ 2.880175] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jul 5 15:50:15 my-pc-name kernel: [ 2.880177] usb 4-1: Product: USB Keyboard
Jul 5 15:50:15 my-pc-name kernel: [ 2.880178] usb 4-1: Manufacturer: NOVATEK
Jul 5 15:50:15 my-pc-name kernel: [ 2.898203] usbcore: registered new interface driver usbhid
Jul 5 15:50:15 my-pc-name kernel: [ 2.898205] usbhid: USB HID core driver
Jul 5 15:50:15 my-pc-name kernel: [ 2.900381] input: NOVATEK USB Keyboard as /devices/pci0000:00/0000:00:12.1/usb4/4-1/4-1:1.0/input/input2
Jul 5 15:50:15 my-pc-name kernel: [ 2.900466] hid-generic 0003:0461:0010.0001: input,hidraw0: USB HID v1.10 Keyboard [NOVATEK USB Keyboard] on usb-0000:00:12.1-1/input0
Jul 5 15:50:15 my-pc-name kernel: [ 2.902202] input: NOVATEK USB Keyboard as /devices/pci0000:00/0000:00:12.1/usb4/4-1/4-1:1.1/input/input3
Jul 5 15:50:15 my-pc-name kernel: [ 2.902290] hid-generic 0003:0461:0010.0002: input,hidraw1: USB HID v1.10 Device [NOVATEK USB Keyboard] on usb-0000:00:12.1-1/input1
Jul 5 15:50:15 my-pc-name kernel: [ 3.067975] [drm] ib test on ring 3 succeeded in 0 usecs
Jul 5 15:50:15 my-pc-name kernel: [ 3.068137] [drm] Radeon Display Connectors
Jul 5 15:50:15 my-pc-name kernel: [ 3.068138] [drm] Connector 0:
Jul 5 15:50:15 my-pc-name kernel: [ 3.068139] [drm] VGA-1
Jul 5 15:50:15 my-pc-name kernel: [ 3.068141] [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c
Jul 5 15:50:15 my-pc-name kernel: [ 3.068142] [drm] Encoders:
Jul 5 15:50:15 my-pc-name kernel: [ 3.068143] [drm] CRT1: INTERNAL_KLDSCP_DAC1
Jul 5 15:50:15 my-pc-name kernel: [ 3.068144] [drm] Connector 1:
Jul 5 15:50:15 my-pc-name kernel: [ 3.068145] [drm] DVI-D-1
Jul 5 15:50:15 my-pc-name kernel: [ 3.068145] [drm] HPD1
Jul 5 15:50:15 my-pc-name kernel: [ 3.068147] [drm] DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c
Jul 5 15:50:15 my-pc-name kernel: [ 3.068147] [drm] Encoders:
Jul 5 15:50:15 my-pc-name kernel: [ 3.068148] [drm] DFP1: INTERNAL_KLDSCP_LVTMA
Jul 5 15:50:15 my-pc-name kernel: [ 3.068166] [drm] radeon: power management initialized
Jul 5 15:50:15 my-pc-name kernel: [ 3.100826] [drm] fb mappable at 0xD0142000
Jul 5 15:50:15 my-pc-name kernel: [ 3.100827] [drm] vram apper at 0xD0000000
Jul 5 15:50:15 my-pc-name kernel: [ 3.100829] [drm] size 8294400
Jul 5 15:50:15 my-pc-name kernel: [ 3.100830] [drm] fb depth is 24
Jul 5 15:50:15 my-pc-name kernel: [ 3.100831] [drm] pitch is 7680
Jul 5 15:50:15 my-pc-name kernel: [ 3.100886] fbcon: radeondrmfb (fb0) is primary device
Jul 5 15:50:15 my-pc-name kernel: [ 3.116026] Console: switching to colour frame buffer device 240x67
Jul 5 15:50:15 my-pc-name kernel: [ 3.119861] radeon 0000:01:05.0: fb0: radeondrmfb frame buffer device
Jul 5 15:50:15 my-pc-name kernel: [ 3.119862] radeon 0000:01:05.0: registered panic notifier
Jul 5 15:50:15 my-pc-name kernel: [ 3.119867] [drm] Initialized radeon 2.29.0 20080528 for 0000:01:05.0 on minor 0
Jul 5 15:50:15 my-pc-name kernel: [ 3.247801] usb 10-1: new high-speed USB device number 2 using xhci_hcd
Jul 5 15:50:15 my-pc-name kernel: [ 3.267107] usb 10-1: New USB device found, idVendor=0ace, idProduct=1211
Jul 5 15:50:15 my-pc-name kernel: [ 3.267110] usb 10-1: New USB device strings: Mfr=16, Product=32, SerialNumber=0
Jul 5 15:50:15 my-pc-name kernel: [ 3.267112] usb 10-1: Product: USB2.0 WLAN
Jul 5 15:50:15 my-pc-name kernel: [ 3.267114] usb 10-1: Manufacturer: ZyDAS
Jul 5 15:50:15 my-pc-name kernel: [ 3.399652] usb 3-3: new low-speed USB device number 2 using ohci_hcd
Jul 5 15:50:15 my-pc-name kernel: [ 3.544557] scsi 6:0:0:0: Direct-Access Ut163 USB2FlashStorage 0.00 PQ: 0 ANSI: 2
Jul 5 15:50:15 my-pc-name kernel: [ 3.544930] sd 6:0:0:0: Attached scsi generic sg2 type 0
Jul 5 15:50:15 my-pc-name kernel: [ 3.545550] sd 6:0:0:0: [sdb] 3948543 512-byte logical blocks: (2.02 GB/1.88 GiB)
Jul 5 15:50:15 my-pc-name kernel: [ 3.546301] sd 6:0:0:0: [sdb] Write Protect is off
Jul 5 15:50:15 my-pc-name kernel: [ 3.546304] sd 6:0:0:0: [sdb] Mode Sense: 00 00 00 00
Jul 5 15:50:15 my-pc-name kernel: [ 3.547056] sd 6:0:0:0: [sdb] Asking for cache data failed
Jul 5 15:50:15 my-pc-name kernel: [ 3.547058] sd 6:0:0:0: [sdb] Assuming drive cache: write through
Jul 5 15:50:15 my-pc-name kernel: [ 3.550419] sd 6:0:0:0: [sdb] Asking for cache data failed
Jul 5 15:50:15 my-pc-name kernel: [ 3.550420] sd 6:0:0:0: [sdb] Assuming drive cache: write through
Jul 5 15:50:15 my-pc-name kernel: [ 3.566502] usb 3-3: New USB device found, idVendor=04f3, idProduct=0210
Jul 5 15:50:15 my-pc-name kernel: [ 3.566505] usb 3-3: New USB device strings: Mfr=0, Product=2, SerialNumber=0
Jul 5 15:50:15 my-pc-name kernel: [ 3.566508] usb 3-3: Product: PS/2+USB Mouse
Jul 5 15:50:15 my-pc-name kernel: [ 3.573658] input: PS/2+USB Mouse as /devices/pci0000:00/0000:00:12.0/usb3/3-3/3-3:1.0/input/input4
Jul 5 15:50:15 my-pc-name kernel: [ 3.573746] hid-generic 0003:04F3:0210.0003: input,hidraw2: USB HID v1.11 Mouse [PS/2+USB Mouse] on usb-0000:00:12.0-3/input0
Jul 5 15:50:15 my-pc-name kernel: [ 3.658439] sdb: sdb1
Jul 5 15:50:15 my-pc-name kernel: [ 3.661296] sd 6:0:0:0: [sdb] Asking for cache data failed
Jul 5 15:50:15 my-pc-name kernel: [ 3.661299] sd 6:0:0:0: [sdb] Assuming drive cache: write through
Jul 5 15:50:15 my-pc-name kernel: [ 3.661301] sd 6:0:0:0: [sdb] Attached SCSI removable disk
Jul 5 15:50:15 my-pc-name kernel: [ 4.073427] EXT4-fs (sda1): INFO: recovery required on readonly filesystem
Jul 5 15:50:15 my-pc-name kernel: [ 4.073430] EXT4-fs (sda1): write access will be enabled during recovery
Jul 5 15:50:15 my-pc-name kernel: [ 5.059843] EXT4-fs (sda1): recovery complete
Jul 5 15:50:15 my-pc-name kernel: [ 5.068086] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
Jul 5 15:50:15 my-pc-name kernel: [ 40.713967] Adding 3665916k swap on /dev/sda5. Priority:-1 extents:1 across:3665916k
Jul 5 15:50:15 my-pc-name kernel: [ 40.719413] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Jul 5 15:50:15 my-pc-name kernel: [ 40.864320] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
Jul 5 15:50:15 my-pc-name kernel: [ 40.865214] ACPI Warning: 0x0000000000000b00-0x0000000000000b07 SystemIO conflicts with Region \SOR1 1 (20121018/utaddress-251)
Jul 5 15:50:15 my-pc-name kernel: [ 40.865225] MCE: In-kernel MCE decoding enabled.
Jul 5 15:50:15 my-pc-name kernel: [ 40.865228] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
Jul 5 15:50:15 my-pc-name kernel: [ 40.866522] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver v0.05
Jul 5 15:50:15 my-pc-name kernel: [ 40.866587] sp5100_tco: PCI Revision ID: 0x3c
Jul 5 15:50:15 my-pc-name kernel: [ 40.866605] sp5100_tco: failed to find MMIO address, giving up.
Jul 5 15:50:15 my-pc-name kernel: [ 40.868247] lp: driver loaded but no devices found
Jul 5 15:50:15 my-pc-name kernel: [ 40.868991] EDAC MC: Ver: 3.0.0
Jul 5 15:50:15 my-pc-name kernel: [ 40.871409] AMD64 EDAC driver v3.4.0
Jul 5 15:50:15 my-pc-name kernel: [ 40.871444] EDAC amd64: DRAM ECC disabled.
Jul 5 15:50:15 my-pc-name kernel: [ 40.871454] EDAC amd64: ECC disabled in the BIOS or no ECC capability, module will not load.
Jul 5 15:50:15 my-pc-name kernel: [ 40.871454] Either enable ECC checking or force module loading by setting 'ecc_enable_override'.
Jul 5 15:50:15 my-pc-name kernel: [ 40.871454] (Note that use of the override may cause unknown side effects.)
Jul 5 15:50:15 my-pc-name kernel: [ 40.874034] it87: Found IT8728F chip at 0x228, revision 1
Jul 5 15:50:15 my-pc-name kernel: [ 40.874051] it87: Beeping is supported
Jul 5 15:50:15 my-pc-name kernel: [ 40.883133] parport_pc 00:09: reported by Plug and Play ACPI
Jul 5 15:50:15 my-pc-name kernel: [ 40.883186] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
Jul 5 15:50:15 my-pc-name kernel: [ 40.914736] cfg80211: Calling CRDA to update world regulatory domain
Jul 5 15:50:15 my-pc-name kernel: [ 40.923273] microcode: CPU0: patch_level=0x0600081c
Jul 5 15:50:15 my-pc-name kernel: [ 40.955801] input: HDA ATI SB Line as /devices/pci0000:00/0000:00:14.2/sound/card0/input5
Jul 5 15:50:15 my-pc-name kernel: [ 40.959980] input: HDA ATI SB Front Mic as /devices/pci0000:00/0000:00:14.2/sound/card0/input6
Jul 5 15:50:15 my-pc-name kernel: [ 40.960047] input: HDA ATI SB Rear Mic as /devices/pci0000:00/0000:00:14.2/sound/card0/input7
Jul 5 15:50:15 my-pc-name kernel: [ 40.960107] input: HDA ATI SB Front Headphone as /devices/pci0000:00/0000:00:14.2/sound/card0/input8
Jul 5 15:50:15 my-pc-name kernel: [ 40.960168] input: HDA ATI SB Line Out as /devices/pci0000:00/0000:00:14.2/sound/card0/input9
Jul 5 15:50:15 my-pc-name kernel: [ 40.960467] snd_hda_intel 0000:01:05.1: setting latency timer to 64
Jul 5 15:50:15 my-pc-name kernel: [ 40.970611] input: HDA ATI HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:05.1/sound/card1/input10
Jul 5 15:50:15 my-pc-name kernel: [ 40.971885] lp0: using parport0 (interrupt-driven).
Jul 5 15:50:15 my-pc-name kernel: [ 40.978601] ppdev: user-space parallel port driver
Jul 5 15:50:15 my-pc-name kernel: [ 40.984004] cfg80211: World regulatory domain updated:
Jul 5 15:50:15 my-pc-name kernel: [ 40.984007] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Jul 5 15:50:15 my-pc-name kernel: [ 40.984009] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jul 5 15:50:15 my-pc-name kernel: [ 40.984012] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jul 5 15:50:15 my-pc-name kernel: [ 40.984013] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jul 5 15:50:15 my-pc-name kernel: [ 40.984015] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jul 5 15:50:15 my-pc-name kernel: [ 40.984017] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jul 5 15:50:15 my-pc-name kernel: [ 41.039772] usb 10-1: reset high-speed USB device number 2 using xhci_hcd
Jul 5 15:50:15 my-pc-name kernel: [ 41.057111] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880103c5e400
Jul 5 15:50:15 my-pc-name kernel: [ 41.057114] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880103c5e440
Jul 5 15:50:15 my-pc-name kernel: [ 41.057116] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880103c5e480
Jul 5 15:50:15 my-pc-name kernel: [ 41.057117] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880103c5e4c0
Jul 5 15:50:15 my-pc-name kernel: [ 41.060238] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
Jul 5 15:50:15 my-pc-name kernel: [ 41.060384] zd1211rw 10-1:1.0: phy0
Jul 5 15:50:15 my-pc-name kernel: [ 41.060404] usbcore: registered new interface driver zd1211rw
Jul 5 15:50:15 my-pc-name kernel: [ 41.118265] microcode: CPU1: patch_level=0x0600081c
Jul 5 15:50:15 my-pc-name kernel: [ 41.118273] microcode: CPU2: patch_level=0x0600081c
Jul 5 15:50:15 my-pc-name kernel: [ 41.118280] microcode: CPU3: patch_level=0x0600081c
Jul 5 15:50:15 my-pc-name kernel: [ 41.118288] microcode: CPU4: patch_level=0x0600081c
Jul 5 15:50:15 my-pc-name kernel: [ 41.118295] microcode: CPU5: patch_level=0x0600081c
Jul 5 15:50:15 my-pc-name kernel: [ 41.118345] microcode: Microcode Update Driver: v2.00 <[email protected]>, Peter Oruba
Jul 5 15:50:15 my-pc-name kernel: [ 41.129513] kvm: Nested Virtualization enabled
Jul 5 15:50:15 my-pc-name kernel: [ 41.129518] kvm: Nested Paging enabled
Jul 5 15:50:15 my-pc-name kernel: [ 41.361009] type=1400 audit(1373032214.404:2): apparmor="STATUS" operation="profile_load" name="/sbin/dhclient" pid=820 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361168] type=1400 audit(1373032214.404:3): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=765 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361174] type=1400 audit(1373032214.404:4): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=764 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361269] type=1400 audit(1373032214.404:5): apparmor="STATUS" operation="profile_load" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=820 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361412] type=1400 audit(1373032214.404:6): apparmor="STATUS" operation="profile_load" name="/usr/lib/connman/scripts/dhclient-script" pid=820 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361573] type=1400 audit(1373032214.404:7): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=765 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361578] type=1400 audit(1373032214.404:8): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=764 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361796] type=1400 audit(1373032214.404:9): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=765 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.361801] type=1400 audit(1373032214.404:10): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=764 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 41.363174] type=1400 audit(1373032214.404:11): apparmor="STATUS" operation="profile_load" name="/usr/sbin/ntpd" pid=850 comm="apparmor_parser"
Jul 5 15:50:15 my-pc-name kernel: [ 42.180878] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
Jul 5 15:50:15 my-pc-name kernel: [ 42.373804] Bluetooth: Core ver 2.16
Jul 5 15:50:15 my-pc-name kernel: [ 42.373821] NET: Registered protocol family 31
Jul 5 15:50:15 my-pc-name kernel: [ 42.373828] Bluetooth: HCI device and connection manager initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.374105] Bluetooth: HCI socket layer initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.374109] Bluetooth: L2CAP socket layer initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.374117] Bluetooth: SCO socket layer initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.377019] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Jul 5 15:50:15 my-pc-name kernel: [ 42.377022] Bluetooth: BNEP filters: protocol multicast
Jul 5 15:50:15 my-pc-name kernel: [ 42.377029] Bluetooth: BNEP socket layer initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.383213] Bluetooth: RFCOMM TTY layer initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.383222] Bluetooth: RFCOMM socket layer initialized
Jul 5 15:50:15 my-pc-name kernel: [ 42.383224] Bluetooth: RFCOMM ver 1.11
Jul 5 15:50:15 my-pc-name kernel: [ 42.648253] r8169 0000:03:00.0 eth0: link down
Jul 5 15:50:15 my-pc-name kernel: [ 42.648275] r8169 0000:03:00.0 eth0: link down
Jul 5 15:50:15 my-pc-name kernel: [ 42.648299] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Jul 5 15:50:15 my-pc-name kernel: [ 42.648615] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Jul 5 15:50:16 my-pc-name kernel: [ 43.022195] zd1211rw 10-1:1.0: firmware version 4605
Jul 5 15:50:16 my-pc-name kernel: [ 43.027245] zd1211rw 10-1:1.0: zd1211 chip 0ace:1211 v4330 high 00-30-95 RF2959_RF pa0 -----
Jul 5 15:50:16 my-pc-name kernel: [ 43.027577] cfg80211: Calling CRDA for country: DE
Jul 5 15:50:16 my-pc-name kernel: [ 43.030374] cfg80211: Regulatory domain changed to country: DE
Jul 5 15:50:16 my-pc-name kernel: [ 43.030376] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Jul 5 15:50:16 my-pc-name kernel: [ 43.030378] cfg80211: (2400000 KHz - 2483500 KHz @ 40000 KHz), (N/A, 2000 mBm)
Jul 5 15:50:16 my-pc-name kernel: [ 43.030379] cfg80211: (5150000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm)
Jul 5 15:50:16 my-pc-name kernel: [ 43.030381] cfg80211: (5250000 KHz - 5350000 KHz @ 40000 KHz), (N/A, 2000 mBm)
Jul 5 15:50:16 my-pc-name kernel: [ 43.030382] cfg80211: (5470000 KHz - 5725000 KHz @ 40000 KHz), (N/A, 2698 mBm)
Jul 5 15:50:16 my-pc-name kernel: [ 43.045335] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Jul 5 15:50:16 my-pc-name kernel: [ 43.045556] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Jul 5 15:50:16 my-pc-name kernel: [ 43.567501] Unsafe core_pattern used with suid_dumpable=2. Pipe handler or fully qualified core dump path required.
Jul 5 15:50:17 my-pc-name kernel: [ 44.086456] vboxdrv: Found 6 processor cores.
Jul 5 15:50:17 my-pc-name kernel: [ 44.086626] vboxdrv: fAsync=0 offMin=0x394 offMax=0x2efb
Jul 5 15:50:17 my-pc-name kernel: [ 44.086695] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
Jul 5 15:50:17 my-pc-name kernel: [ 44.086696] vboxdrv: Successfully loaded version 4.2.10_Ubuntu (interface 0x001a0004).
Jul 5 15:50:17 my-pc-name kernel: [ 44.108998] vboxpci: IOMMU not found (not registered)
Jul 5 15:50:17 my-pc-name kernel: [ 44.305046] r8169 0000:03:00.0 eth0: link up
Jul 5 15:50:17 my-pc-name kernel: [ 44.305053] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Jul 5 15:50:20 my-pc-name kernel: [ 47.376693] audit_printk_skb: 86 callbacks suppressed
Jul 5 15:50:20 my-pc-name kernel: [ 47.376697] type=1400 audit(1373032220.423:40): apparmor="DENIED" operation="open" parent=1235 profile="/sbin/dhclient" name="/var/lib/NetworkManager/dhclient6-eth0.conf" pid=2094 comm="dhclient" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
答案1
以下是我修复它的方法：
首先，上面的错误并不是唯一的。我的内存使用率也非常高，图形无法正常工作，所有东西都运行得非常慢，我的 CPU 使用率始终在 90% 左右（我有一台 AMD-FX6300 六核处理器！！！），我无法安装设备，声音也无法正常工作。所以，下面是我解决这个问题的方法。我只是手动安装了新的 3.9 内核，如下所示：
wget http://goo.gl/g1XHX
chmod +x g1XHX
sudo sh g1XHX
g1XHX：
#!/bin/sh
echo "$(tput setaf 3)--- Kernel 3.9.4 - lffl will be installed in an `uname -i` system---$(tput sgr0)"
echo ""
sleep 2
read -p "Press Enter to continue, or abort by pressing CTRL+C" nothing
echo ""
echo ""
#i386 links
link1="http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.4-saucy/linux-headers-3.9.4-030904_3.9.4-030904.201305241545_all.deb"
link2="http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.4-saucy/linux-headers-3.9.4-030904-generic_3.9.4-030904.201305241545_i386.deb"
link3="http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.4-saucy/linux-image-3.9.4-030904-generic_3.9.4-030904.201305241545_i386.deb"
#amd64 links
url1="http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.4-saucy/linux-headers-3.9.4-030904-generic_3.9.4-030904.201305241545_amd64.deb"
url2="http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.4-saucy/linux-image-3.9.4-030904-generic_3.9.4-030904.201305241545_amd64.deb"
#System architecture
arch=`uname -m`
if [ $arch = i686 ] || [ $arch = i386 ]; then
mkdir -p $HOME/kernel-i386
cd $HOME/kernel-i386
wget -c $link1
wget -c $link2
wget -c $link3
sudo dpkg -i *.deb
sudo rm -rf $HOME/kernel-i386
elif [ $arch = "x86_64" ]; then
mkdir -p $HOME/kernel-amd64
cd $HOME/kernel-amd64
wget -c $link1
wget -c $url1
wget -c $url2
sudo dpkg -i *.deb
sudo rm -rf $HOME/kernel-amd64
else
echo "Unsupported Architecture"
fi
然后我重新启动，一切正常！