经过一段时间（似乎每次都一样）（虽然我没有计时），桌面上除了键盘和鼠标之外的所有内容都会冻结。
- 我尝试禁用电源和屏幕保护程序选项中的所有内容以阻止它进入睡眠状态，但这并不能解决问题。
- 我尝试安装 xscreensaver 来完全禁用 unity 屏幕保护程序，但这也没有解决问题。
- 我已监测系统温度，温度未超过 55ºC
Syslog如下：
Feb 7 07:39:43 ben-M4A79T-Deluxe rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="1230" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
Feb 7 07:40:34 ben-M4A79T-Deluxe anacron[27976]: Job `cron.daily' terminated (mailing output)
Feb 7 07:40:34 ben-M4A79T-Deluxe anacron[27976]: Can't find sendmail at /usr/sbin/sendmail, not mailing output
Feb 7 07:40:34 ben-M4A79T-Deluxe anacron[27976]: Job `cron.weekly' started
Feb 7 07:40:34 ben-M4A79T-Deluxe anacron[31777]: Updated timestamp for job `cron.weekly' to 2016-02-07
Feb 7 07:41:36 ben-M4A79T-Deluxe anacron[27976]: Job `cron.weekly' terminated
Feb 7 07:41:36 ben-M4A79T-Deluxe anacron[27976]: Normal exit (2 jobs run)
Feb 7 08:01:19 ben-M4A79T-Deluxe udevd[6370]: symlink '../../sdd' '/dev/disk/by-path/pci-0000:00:11.0-scsi-0:0:0:0.udev-tmp' failed: File exists
Feb 7 08:09:01 ben-M4A79T-Deluxe CRON[8862]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete)
Feb 7 08:13:24 ben-M4A79T-Deluxe avahi-daemon[1454]: Invalid response packet from host 192.168.1.10.
Feb 7 08:17:01 ben-M4A79T-Deluxe CRON[11441]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Feb 7 08:39:01 ben-M4A79T-Deluxe CRON[18656]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete)
Feb 7 09:06:21 ben-M4A79T-Deluxe dhclient: DHCPREQUEST of 192.168.1.196 on eth0 to 192.168.1.254 port 67
Feb 7 09:06:21 ben-M4A79T-Deluxe dhclient: DHCPACK of 192.168.1.196 from 192.168.1.254
Feb 7 09:06:21 ben-M4A79T-Deluxe dhclient: bound to 192.168.1.196 -- renewal in 39627 seconds.
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> (eth0): DHCPv4 state changed bound -> renew
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> address 192.168.1.196
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> prefix 24 (255.255.255.0)
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> gateway 192.168.1.254
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> hostname 'BEN-PC-ETH'
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> nameserver '192.168.1.254'
Feb 7 09:06:21 ben-M4A79T-Deluxe NetworkManager[1515]: <info> domain name 'home.gateway'
Feb 7 09:06:22 ben-M4A79T-Deluxe dbus[1317]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Feb 7 09:06:22 ben-M4A79T-Deluxe dbus[1317]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Feb 7 09:09:01 ben-M4A79T-Deluxe CRON[28438]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete)
Feb 7 09:13:24 ben-M4A79T-Deluxe avahi-daemon[1454]: Invalid response packet from host 192.168.1.10.
Feb 7 09:17:01 ben-M4A79T-Deluxe CRON[31073]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Feb 7 09:37:36 ben-M4A79T-Deluxe udevd[5531]: symlink '../../sdb' '/dev/disk/by-path/pci-0000:00:11.0-scsi-0:0:0:0.udev-tmp' failed: File exists
Feb 7 09:39:01 ben-M4A79T-Deluxe CRON[6035]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete)
Feb 7 09:40:45 ben-M4A79T-Deluxe udevd[6543]: symlink '../../sdb' '/dev/disk/by-path/pci-0000:00:11.0-scsi-0:0:0:0.udev-tmp' failed: File exists
Feb 7 09:41:39 ben-M4A79T-Deluxe kernel: [41914.753206] show_signal_msg: 135 callbacks suppressed
Feb 7 09:41:39 ben-M4A79T-Deluxe kernel: [41914.753211] Watchdog[6888]: segfault at 0 ip 00007f3afe9a073e sp 00007f3af1f08690 error 6 in libcontent.so[7f3afe104000+11d5000]
Feb 7 09:41:55 ben-M4A79T-Deluxe kernel: [41931.193405] Watchdog[7135]: segfault at 0 ip 00007f61081c273e sp 00007f60fb72a690 error 6 in libcontent.so[7f6107926000+11d5000]
sudo lshw -short > ~/Desktop/hardware.txt
H/W path Device Class Description
====================================================
system System Product Name (To Be Filled By O.E.M.)
/0 bus M4A79T Deluxe
/0/0 memory 64KiB BIOS
/0/4 processor AMD Phenom(tm) II X4 965 Processor
/0/4/5 memory 512KiB L1 cache
/0/4/6 memory 2MiB L2 cache
/0/4/7 memory 6MiB L3 cache
/0/3d memory 16GiB System Memory
/0/3d/0 memory 4GiB DIMM DDR Synchronous 1333 MHz (0.8 ns)
/0/3d/1 memory 4GiB DIMM DDR Synchronous 1333 MHz (0.8 ns)
/0/3d/2 memory 4GiB DIMM DDR Synchronous 1333 MHz (0.8 ns)
/0/3d/3 memory 4GiB DIMM DDR Synchronous 1333 MHz (0.8 ns)
/0/100 bridge RD790 Host Bridge
/0/100/2 bridge RX780/RD790 PCI to PCI bridge (external gfx0 port A)
/0/100/2/0 display Juniper XT [Radeon HD 5770]
/0/100/2/0.1 multimedia Juniper HDMI Audio [Radeon HD 5700 Series]
/0/100/5 bridge RX780/RD790 PCI to PCI bridge (PCI express gpp port B)
/0/100/5/0 bus uPD720201 USB 3.0 Host Controller
/0/100/6 bridge RD790 PCI to PCI bridge (PCI express gpp port C)
/0/100/6/0 eth0 network RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/7 bridge RX780/RD790 PCI to PCI bridge (PCI express gpp port D)
/0/100/7/0 bus VT6315 Series Firewire Controller
/0/100/c bridge RD790 PCI to PCI bridge (external gfx1 port B)
/0/100/c/0 scsi2 storage Series 8 12G SAS/PCIe 3
/0/100/c/0/0.0.0 /dev/sda volume 7449GiB EXT4 volume
/0/100/c/0/1.0.0 disk WDC WD40EFRX-68W
/0/100/c/0/1.1.0 disk WDC WD40EFRX-68W
/0/100/c/0/1.2.0 disk WDC WD40EFRX-68W
/0/100/c/0/1.3.0 disk WDC WD40EFRX-68W
/0/100/11 storage SB7x0/SB8x0/SB9x0 SATA Controller [IDE mode]
/0/100/12 bus SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
/0/100/12.1 bus SB7x0 USB OHCI1 Controller
/0/100/12.2 bus SB7x0/SB8x0/SB9x0 USB EHCI Controller
/0/100/13 bus SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
/0/100/13.1 bus SB7x0 USB OHCI1 Controller
/0/100/13.2 bus SB7x0/SB8x0/SB9x0 USB EHCI Controller
/0/100/14 bus SBx00 SMBus Controller
/0/100/14.1 storage SB7x0/SB8x0/SB9x0 IDE Controller
/0/100/14.2 multimedia SBx00 Azalia (Intel HDA)
/0/100/14.3 bridge SB7x0/SB8x0/SB9x0 LPC host controller
/0/100/14.4 bridge SBx00 PCI to PCI Bridge
/0/100/14.4/6 wlan0 network AR922X Wireless Network Adapter
/0/100/14.5 bus SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
/0/101 bridge Family 10h Processor HyperTransport Configuration
/0/102 bridge Family 10h Processor Address Map
/0/103 bridge Family 10h Processor DRAM Controller
/0/104 bridge Family 10h Processor Miscellaneous Control
/0/105 bridge Family 10h Processor Link Control
/0/1 scsi0 storage
/0/1/0.0.0 /dev/sdb disk 500GB WDC WD5000AADS-0
/0/1/0.0.0/1 /dev/sdb1 volume 100MiB Windows NTFS volume
/0/1/0.0.0/2 /dev/sdb2 volume 79GiB Windows NTFS volume
/0/1/0.0.0/3 /dev/sdb3 volume 99GiB Windows NTFS volume
/0/1/0.0.0/4 /dev/sdb4 volume 285GiB Windows NTFS volume
/0/2 scsi1 storage
/0/2/0.0.0 /dev/sdc disk 2TB WDC WD20EARS-00M
/0/2/0.0.0/1 /dev/sdc1 volume 1863GiB EXT4 volume
/0/3 scsi3 storage
/0/3/0.0.0 /dev/sdd disk 500GB WDC WD5000AAKX-6
/0/3/0.0.0/1 /dev/sdd1 volume 95GiB EXT4 volume
/0/3/0.0.0/2 /dev/sdd2 volume 355GiB EXT4 volume
/0/3/0.0.0/3 /dev/sdd3 volume 15GiB Extended partition
/0/3/0.0.0/3/5 /dev/sdd5 volume 15GiB Linux swap / Solaris partition
当我使用电脑时不会发生这种情况，但闲置一段时间后它就会冻结。我唯一安全的选择是按 Ctrl + Alt + F1 并按 sudo init 6 请帮忙？