APM settings are not persistent after a reboot
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| gnome-disk-utility (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Bug Description
In order to keep my data storage disks from slowly committing suicide by unloading their heads, I have to disable APM for both of them. Usually I would be able to do so by putting 'hdparm -B255 -S0 /dev/sdx*' in /etc/rc.local.
Since Ubuntu 12.10, Palimpsest has a built-in function to modify APM settings if required. Sadly, after a reboot, these settings aren't kept. Even though the Palimpsest interface still claims APM is set to 255, running sudo hdparm -I /dev/sdx* will show the default value of 128 again. The desired behaviour is hdparm showing 'APM = off', and, more importantly, the disks not breaking themselves.
The only way to keep my disks from dying is by adding
/dev/sdx* {
apm = 255
spindown_time = 0
}
to /etc/hdparm.conf, as everything in /etc/rc.local seems to be ignored as well. The problem is no different for my SSD, but it doesn't make a difference for that one, obviously. Disabling and re-enabling the APM settings from Palimpsest does seem to work though, but it's impossible to do/remember that after every bootup. And forgetting to do so would most likely lead to premature disk failure.
* 'sdx' is 'sdb' and 'sdc' in my case
ProblemType: Bug
ApportVersion: 2.5.3-0ubuntu1
Architecture: amd64
Date: Sat Sep 29 15:28:24 2012
DistroRelease: Ubuntu 12.10
Package: gnome-disk-utility 3.6.0-0ubuntu1
PackageArchitec
ProcVersionSign
SourcePackage: gnome-disk-utility
Tags: quantal
Uname: Linux 3.5.0-16-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
| David Segura M (davidseg) wrote | #1 |
| Launchpad Janitor (janitor) wrote | #2 |
| Changed in gnome-disk-utility (Ubuntu): | |
| status: | New → Confirmed |
| Michele Giacomoli (michele-giacomoli) wrote | #3 |
| tags: | added: trusty |
| Rocko (rockorequin) wrote | #4 |
The same thing happens here, under Xubuntu Precise, no matter how I do it after restart i does not remember the APM settings wether is under rc.local or /etc/hdparm.conf , the kernel is linux 3.2.0-32-generic.