13.04，Thinkpad x230，工作 15-20 分钟后出现 I/O 错误

Question

上次更新后，我的系统变得很奇怪。15-20 分钟后，所有驱动器都变成只读。在终端中我收到错误：I/O 错误、总线错误、磁盘为只读。

我用 smartctl 检查了所有磁盘，一切正常。

$ sudo smartctl -a /dev/sda
SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)       LBA_of_first_error
# 1  Extended offline    Completed without error       00%      5681         -
# 2  Short offline       Completed without error       00%      5680         -

$ sudo smartctl -a /dev/sdb
SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%         0         -
# 2  Short offline       Completed without error       00%         0         -

dmesg 的一部分：https://lh3.googleusercontent.com/-zTqVmKJKyDI/UbwqiV5hxDI/AAAAAAAAV7U/nOrATeHVgIw/w733-h550-no/IMG_20130615_114744.jpg

$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 238.5G  0 disk 
└─sda2   8:2    0 238.5G  0 part /home/vitali
sdb      8:16   0  59.6G  0 disk 
└─sdb1   8:17   0  59.6G  0 part /


$ sudo lshw -class disk
  *-disk:0                
       description: ATA Disk
       product: M4-CT256M4SSD2
       physical id: 0.0.0
       bus info: scsi@0:0.0.0
       logical name: /dev/sda
       version: 0009
       serial: 000000001141031BD111
       size: 238GiB (256GB)
       capabilities: partitioned partitioned:dos
       configuration: ansiversion=5 sectorsize=512 signature=000240d5
  *-disk:1
       description: ATA Disk
       product: SATA SSD
       physical id: 0.1.0
       bus info: scsi@0:0.1.0
       logical name: /dev/sdb
       version: S5FA
       serial: 1B650715132200000086
       size: 59GiB (64GB)
       capabilities: partitioned partitioned:dos
       configuration: ansiversion=5 sectorsize=512 signature=0bb2e31f

我尝试将我的系统从 sdb 移至 sda，但没有任何变化。

dd if=/dev/sdb1 of=~/sdb1.img
dd if=~/sdb1.img of=/dev/sda1

核心：

$ uname -a
Linux sab 3.8.0-25-generic #37-Ubuntu SMP Thu Jun 6 20:47:30 UTC 2013 i686 i686 i686 GNU/Linux

我怎样才能找到我的问题并解决它？