Created attachment 603625 [details] Load Cycles Count before and after upgrade Short description: I upgraded to Fedora 17 from Fedora 14 about a week ago. I always monitor the Load Cycle Count on my machines. After the upgrade load cycle count started to grow extremely fast (see attached plot). Tried different hdparm options with no success. More details: My current hard drive is a Western Digital WDC WD7500BPKT-00PK4T0. For a long time and with different hard drives I used these options to lower the load cycles count growth: hdparm -B 160 /dev/sda # used on battery hdparm -B 254 /dev/sda # used on AC power Before the upgrade I had Fedora 14 with kernel-2.6.35.14-106.fc14.x86_64. After the upgrade I noticed the highly increased growth rate of load cycle count (and also it makes noise when parking the heads). I tried `hdparm -B 255', `hdparm -S 242', but even with these options the hard drive tries to park the heads at least once evey 20-30 minutes. With previous distribution and kernel version with `hdparm -B 254' I had basically one load cycle per one power cycle. It seems like something is terribly broken now in the hard drive power management land now. Can you please suggest a fix?
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*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 19 kernel bugs. Fedora 19 has now been rebased to 3.12.6-200.fc19. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 20, and are still experiencing this issue, please change the version to Fedora 20. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug has been in a needinfo state for more than 1 month and is being closed with insufficient data due to inactivity. If this is still an issue with Fedora 19, please feel free to reopen the bug and provide the additional information requested.
On a ThinkPad T400 with a Hitachi HTS723216L9SA60 disk which is only used a few hours per day , the load cycle count has increased from 169.000 to 267.000 in less than three months which amounts to about 1.200 load cycles per day which I find a lot. However, 'hdparm -B /dev/sda' returns the default setting /dev/sda: APM_level = 128 which I supposed to be a rather conservative setting. During the indicated period of time, current Fedora 20 or the latest Fedora 21 development tree was installed. The current kernel is kernel-3.14.2-200.fc20. This is still an issue; therefore, reopen the bug, please. Thanks!