Comment 108 for bug 607560

This bug also conserns Lenovo B575e models.

Odd kworker and ext4lazyinit activity which results in constant hdd-activity light blinking. Interesting that this did'n _not_ affect ie. Ubuntu 14.04. Tested within about two hour timeframe.

Xubuntu 14.04
3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

:~$ sudo iotop -obtqqq

14:59:38 2451 idle man 0.00 B/s 1050.18 K/s 0.00 % 4.30 % mandb --quiet
14:59:39 143 be/3 root 0.00 B/s 90.60 K/s 0.00 % 71.89 % [jbd2/sda5-8]
14:59:39 2451 idle man 328.41 K/s 0.00 B/s 0.00 % 16.43 % mandb --quiet
14:59:39 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.33 % [kworker/u8:3]
14:59:40 143 be/3 root 0.00 B/s 102.14 K/s 0.00 % 79.94 % [jbd2/sda5-8]
14:59:40 2451 idle man 272.38 K/s 177.80 K/s 0.00 % 6.25 % mandb --quiet
14:59:40 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 4.01 % [ext4lazyinit]
14:59:40 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.42 % [kworker/u8:3]
14:59:41 143 be/3 root 0.00 B/s 79.35 K/s 0.00 % 90.75 % [jbd2/sda5-8]
14:59:41 2451 idle man 317.41 K/s 196.49 K/s 0.00 % 0.91 % mandb --quiet
14:59:41 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.36 % [kworker/u8:3]
14:59:42 143 be/3 root 0.00 B/s 79.22 K/s 0.00 % 80.29 % [jbd2/sda5-8]
14:59:42 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.46 % [kworker/u8:3]
14:59:42 823 be/4 syslog 0.00 B/s 3.77 K/s 0.00 % 0.00 % rsyslogd [rs:main Q:Reg]
14:59:42 956 be/4 root 0.00 B/s 3.77 K/s 0.00 % 0.00 % anacron -s
14:59:43 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.02 % [ext4lazyinit]
14:59:43 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.36 % [kworker/u8:3]
14:59:44 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.56 % [kworker/u8:3]
14:59:46 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 2.83 % [ext4lazyinit]
14:59:46 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.67 % [kworker/u8:3]
14:59:47 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.63 % [kworker/u8:3]
14:59:48 143 be/3 root 0.00 B/s 72.00 K/s 0.00 % 3.78 % [jbd2/sda5-8]
14:59:48 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.40 % [kworker/u8:3]
14:59:49 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.70 % [kworker/u8:3]
14:59:49 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.00 % [ext4lazyinit]
14:59:50 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.34 % [kworker/u8:3]
14:59:51 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.78 % [kworker/u8:3]
14:59:51 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 1.71 % [ext4lazyinit]
14:59:52 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.32 % [kworker/u8:3]
14:59:53 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.85 % [kworker/u8:3]
14:59:54 143 be/3 root 0.00 B/s 0.00 B/s 0.00 % 4.55 % [jbd2/sda5-8]
14:59:54 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 1.97 % [ext4lazyinit]
14:59:54 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.33 % [kworker/u8:3]
14:59:55 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.88 % [kworker/u8:3]
14:59:56 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 2.89 % [ext4lazyinit]
14:59:56 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.33 % [kworker/u8:3]
14:59:57 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.97 % [kworker/u8:3]
14:59:58 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.33 % [kworker/u8:3]
14:59:59 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 4.06 % [kworker/u8:3]
14:59:59 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.04 % [ext4lazyinit]
15:00:00 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.34 % [kworker/u8:3]
15:00:01 143 be/3 root 0.00 B/s 0.00 B/s 0.00 % 4.96 % [jbd2/sda5-8]
15:00:01 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 4.14 % [kworker/u8:3]
15:00:01 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 1.76 % [ext4lazyinit]
15:00:02 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.35 % [kworker/u8:3]
15:00:03 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 4.21 % [kworker/u8:3]
15:00:05 393 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.04 % [ext4lazyinit]
15:00:05 129 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.64 % [kworker/u8:3]