我的台式机原来安装的win10系统,跑起来嗖嗖的,硬件没有什么问题,自从使用Ｕ盘安装了Ubuntu14.04之后，进入Ubuntu就会出现各种各样的死机情况,写代码会卡,打字会卡,上个网也能卡。电脑卡的时候任何设备都不能使用,也不能ctrl+alt+F1跳转到tty。请问我要如何解决?是显卡驱动的事么？网上给了一些答案但是太不靠谱了。这个是我最近一次死机的日志,是按alt+table键的时候死机的,当时电脑只开了sublimetext 编辑器和chrome(chrome里也没有视频和flash)。

打开　/var/log/syslog

Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.173691] usb 3-11: new high-speed USB device number 6 using xhci_hcd
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192678] usb 3-11: New USB device found, idVendor=0930, idProduct=6544
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192687] usb 3-11: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192692] usb 3-11: Product: DataTraveler 2.0
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192695] usb 3-11: Manufacturer: Kingston
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192699] usb 3-11: SerialNumber: 50E549C2020CCE50698E45C2
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192928] usb 3-11: ep 0x81 - rounding interval to 128 microframes, ep desc says 255 microframes
Feb 21 18:06:50 hjy-B85-HD3 kernel: [ 3357.192943] usb 3-11: ep 0x2 - rounding interval to 128 microframes, ep desc says 255 microframes
Feb 21 18:06:50 hjy-B85-HD3 mtp-probe: checking bus 3, device 6: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-11"
Feb 21 18:06:50 hjy-B85-HD3 mtp-probe: bus: 3, device: 6 was not an MTP device
Feb 21 18:06:51 hjy-B85-HD3 kernel: [ 3357.334838] usb-storage 3-11:1.0: USB Mass Storage device detected
Feb 21 18:06:51 hjy-B85-HD3 kernel: [ 3357.334882] scsi6 : usb-storage 3-11:1.0
Feb 21 18:06:51 hjy-B85-HD3 kernel: [ 3357.334964] usbcore: registered new interface driver usb-storage
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.348334] scsi 6:0:0:0: Direct-Access     Kingston DataTraveler 2.0 1.00 PQ: 0 ANSI: 4
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.349125] sd 6:0:0:0: Attached scsi generic sg1 type 0
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.349666] sd 6:0:0:0: [sdb] 15148608 512-byte logical blocks: (7.75 GB/7.22 GiB)
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.350143] sd 6:0:0:0: [sdb] Write Protect is off
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.350155] sd 6:0:0:0: [sdb] Mode Sense: 45 00 00 00
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.350431] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.354763]  sdb: sdb4
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.355623] sd 6:0:0:0: [sdb] Attached SCSI removable disk
Feb 21 18:06:52 hjy-B85-HD3 kernel: [ 3358.766721] FAT-fs (sdb4): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
Feb 21 18:06:52 hjy-B85-HD3 udisksd[2203]: Mounted /dev/sdb4 at /media/hjy/IR1_CENA_X6 on behalf of uid 1000
Feb 21 18:06:54 hjy-B85-HD3 colord: device removed: xrandr-Dell Inc.-DELL U2414H-4CWX754LAAPL

这个是我的硬件信息。

H/W path       Device     Class          Description
====================================================
                          system         B85-HD3 (To be filled by O.E.M.)
/0                        bus            B85-HD3
/0/0                      memory         64KiB BIOS
/0/4                      memory         128KiB L1 cache
/0/5                      memory         512KiB L2 cache
/0/6                      memory         3MiB L3 cache
/0/7                      memory         8GiB System Memory
/0/7/0                    memory         8GiB DIMM DDR3 Synchronous 1333 MHz (0.8 ns)
/0/7/1                    memory         DIMMProject-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>POT-Creation-Date: 2009-10-08 14:02+0200PO-Revision-Date: 20
/0/7/2                    memory         DIMMProject-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>POT-Creation-Date: 2009-10-08 14:02+0200PO-Revision-Date: 20
/0/7/3                    memory         DIMMProject-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>POT-Creation-Date: 2009-10-08 14:02+0200PO-Revision-Date: 20
/0/41                     processor      Intel(R) Core(TM) i3-4150 CPU @ 3.50GHz
/0/100                    bridge         4th Gen Core Processor DRAM Controller
/0/100/1                  bridge         Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller
/0/100/1/0                display        GK107 [GeForce GTX 650]
/0/100/1/0.1              multimedia     GK107 HDMI Audio Controller
/0/100/2                  display        Intel Corporation
/0/100/3                  multimedia     Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
/0/100/14                 bus            8 Series/C220 Series Chipset Family USB xHCI
/0/100/16                 communication  8 Series/C220 Series Chipset Family MEI Controller #1
/0/100/1a                 bus            8 Series/C220 Series Chipset Family USB EHCI #2
/0/100/1b                 multimedia     8 Series/C220 Series Chipset High Definition Audio Controller
/0/100/1c                 bridge         8 Series/C220 Series Chipset Family PCI Express Root Port #1
/0/100/1c.2               bridge         8 Series/C220 Series Chipset Family PCI Express Root Port #3
/0/100/1c.2/0  eth0       network        RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/1c.3               bridge         8 Series/C220 Series Chipset Family PCI Express Root Port #4
/0/100/1c.3/0             bridge         82801 PCI Bridge
/0/100/1d                 bus            8 Series/C220 Series Chipset Family USB EHCI #1
/0/100/1f                 bridge         B85 Express LPC Controller
/0/100/1f.2               storage        8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode]
/0/100/1f.3               bus            8 Series/C220 Series Chipset Family SMBus Controller
/0/1           scsi4      storage        
/0/1/0.0.0     /dev/sda   disk           1TB WDC WD10EZEX-00B
/0/1/0.0.0/1   /dev/sda1  volume         486MiB Windows FAT volume
/0/1/0.0.0/2   /dev/sda2  volume         244MiB EFI partition
/0/1/0.0.0/3   /dev/sda3  volume         930GiB LVM Physical Volume
/0/2           scsi6      storage        
/0/2/0.0.0     /dev/sdb   disk           7756MB SCSI Disk
/0/2/0.0.0/4   /dev/sdb4  volume         7396MiB Windows FAT volume
/1                        power          To Be Filled By O.E.M.
/2             eth1       network        Ethernet interface