我遇到了与关联但在 Ubuntu 14.04 64 位上。
面临的问题：
- 每当光标图标改变时，鼠标指针就会冻结约 300 毫秒：
- 将鼠标从文本字段悬停回到鼠标指针。
- 当跨越窗口边框时，光标会改变大小并返回到鼠标指针。
这种现象在每个应用程序中都时有发生（在 Chromium、Firefox 中尤为严重）
还有一个问题是右键单击上下文非常慢，但我不知道这是否相关。
我尝试过但没有成功的事情：
- 将桌面环境更改为 Unity/cinnamon/gnome-flash-back
- 将我的显卡驱动程序更改为 Xorg/AMD 专有
- 减少/增加触摸板/鼠标指针的加速度和灵敏度。
系统配置：
戴尔 N4110
更新 1
我安装了 indicator-multiload，即使 CPU % 接近 7-8，iowait 也很高。使用 iotop，我观察到 2 个特定进程（即 kworker 和 jdb）导致 io 操作很高。我不知道这些进程在做什么。
更新 2
我查看了 /var/log/syslog，内容如下：
Jan 1 00:43:48 bolt kernel: [ 9091.210590] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x40000 action 0x6 frozen
Jan 1 00:43:48 bolt kernel: [ 9091.210604] ata1: SError: { CommWake }
Jan 1 00:43:48 bolt kernel: [ 9091.210610] ata1.00: failed command: FLUSH CACHE EXT
Jan 1 00:43:48 bolt kernel: [ 9091.210621] ata1.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 27
Jan 1 00:43:48 bolt kernel: [ 9091.210621] res 40/00:ff:80:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Jan 1 00:43:48 bolt kernel: [ 9091.210627] ata1.00: status: { DRDY }
Jan 1 00:43:48 bolt kernel: [ 9091.210635] ata1: hard resetting link
Jan 1 00:43:53 bolt kernel: [ 9096.571351] ata1: link is slow to respond, please be patient (ready=0)
Jan 1 00:43:58 bolt kernel: [ 9101.220139] ata1: COMRESET failed (errno=-16)
Jan 1 00:43:58 bolt kernel: [ 9101.220154] ata1: hard resetting link
Jan 1 00:44:03 bolt kernel: [ 9106.585077] ata1: link is slow to respond, please be patient (ready=0)
Jan 1 00:44:04 bolt kernel: [ 9107.145217] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Jan 1 00:44:04 bolt kernel: [ 9107.195250] ata1.00: configured for UDMA/100
Jan 1 00:44:04 bolt kernel: [ 9107.195259] ata1.00: retrying FLUSH 0xea Emask 0x4
Jan 1 00:44:04 bolt kernel: [ 9107.195421] ata1: EH complete
Jan 1 00:44:17 bolt kernel: [ 9120.143473] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x50000 action 0x6 frozen
Jan 1 00:44:17 bolt kernel: [ 9120.143485] ata1: SError: { PHYRdyChg CommWake }
Jan 1 00:44:17 bolt kernel: [ 9120.143491] ata1.00: failed command: IDENTIFY DEVICE
Jan 1 00:44:17 bolt kernel: [ 9120.143500] ata1.00: cmd ec/00:01:00:00:00/00:00:00:00:00/00 tag 17 pio 512 in
Jan 1 00:44:17 bolt kernel: [ 9120.143500] res 40/00:01:00:00:00/00:00:00:00:00/40 Emask 0x4 (timeout)
Jan 1 00:44:17 bolt kernel: [ 9120.143504] ata1.00: status: { DRDY }
Jan 1 00:44:17 bolt kernel: [ 9120.143512] ata1: hard resetting link
Jan 1 00:44:22 bolt kernel: [ 9125.504263] ata1: link is slow to respond, please be patient (ready=0)
Jan 1 00:44:26 bolt kernel: [ 9129.200981] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Jan 1 00:44:26 bolt kernel: [ 9129.248292] ata1.00: configured for UDMA/100
Jan 1 00:44:26 bolt kernel: [ 9129.248459] ata1: EH complete
Jan 1 00:44:39 bolt kernel: [ 9142.131168] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x40000 action 0x6 frozen
Jan 1 00:44:39 bolt kernel: [ 9142.131181] ata1: SError: { CommWake }
Jan 1 00:44:39 bolt kernel: [ 9142.131187] ata1.00: failed command: CHECK POWER MODE
Jan 1 00:44:39 bolt kernel: [ 9142.131198] ata1.00: cmd e5/00:00:00:00:00/00:00:00:00:00/00 tag 3
Jan 1 00:44:39 bolt kernel: [ 9142.131198] res 40/00:01:00:00:00/00:00:00:00:00/40 Emask 0x4 (timeout)
Jan 1 00:44:39 bolt kernel: [ 9142.131204] ata1.00: status: { DRDY }
Jan 1 00:44:39 bolt kernel: [ 9142.131213] ata1: hard resetting link
Jan 1 00:44:44 bolt kernel: [ 9147.495976] ata1: link is slow to respond, please be patient (ready=0)
Jan 1 00:44:48 bolt kernel: [ 9151.304687] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Jan 1 00:44:48 bolt kernel: [ 9151.351255] ata1.00: configured for UDMA/100
Jan 1 00:44:48 bolt kernel: [ 9151.351413] ata1: EH complete
Jan 1 00:45:01 bolt CRON[7231]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Jan 1 00:47:16 bolt kernel: [ 9299.245699] ata1.00: NCQ disabled due to excessive errors
Jan 1 00:47:16 bolt kernel: [ 9299.245706] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x40000 action 0x6 frozen
Jan 1 00:47:16 bolt kernel: [ 9299.245711] ata1: SError: { CommWake }
Jan 1 00:47:16 bolt kernel: [ 9299.245714] ata1.00: failed command: FLUSH CACHE EXT
Jan 1 00:47:16 bolt kernel: [ 9299.245721] ata1.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 15
Jan 1 00:47:16 bolt kernel: [ 9299.245721] res 40/00:ff:ff:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Jan 1 00:47:16 bolt kernel: [ 9299.245724] ata1.00: status: { DRDY }
Jan 1 00:47:16 bolt kernel: [ 9299.245728] ata1: hard resetting link
Jan 1 00:47:21 bolt kernel: [ 9304.614593] ata1: link is slow to respond, please be patient (ready=0)
Jan 1 00:47:26 bolt kernel: [ 9309.263429] ata1: COMRESET failed (errno=-16)
Jan 1 00:47:26 bolt kernel: [ 9309.263445] ata1: hard resetting link
Jan 1 00:47:31 bolt kernel: [ 9314.624287] ata1: link is slow to respond, please be patient (ready=0)
Jan 1 00:47:32 bolt kernel: [ 9315.576458] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Jan 1 00:47:32 bolt kernel: [ 9315.623445] ata1.00: configured for UDMA/100
Jan 1 00:47:32 bolt kernel: [ 9315.623455] ata1.00: retrying FLUSH 0xea Emask 0x4
Jan 1 00:47:32 bolt kernel: [ 9315.623629] ata1: EH complete
我已经运行了 SMART 数据和自检，没有出现任何故障。那么，我的硬盘工作正常吗？
SATA 电缆有问题吗？如何在不使用任何其他硬件的情况下确认。请建议我还可以尝试什么或解决方案。
请建议我还可以尝试什么或提供解决方案。