Bug 94618 - [udisks2] APM level reset to default value 128 after resume from suspend
Summary: [udisks2] APM level reset to default value 128 after resume from suspend
Status: NEW
Alias: None
Product: udisks
Classification: Unclassified
Component: operations (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Martin Pitt
QA Contact:
Depends on:
Reported: 2016-03-18 21:00 UTC by Joachim Frieben
Modified: 2016-05-02 17:30 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:


Description Joachim Frieben 2016-03-18 21:00:19 UTC

This bug was originally as 


Description of problem:
After setting the APM level of my hard disk to 255 by means of gnomedisk-utility, the APM level is actually set to 255 as verifified by means of executing 'hdparm -B /dev/sda'. However, after suspend and resume, the APM level is set to 128 as verified by executing 'hdparm -B /dev/sda' again.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Set APM level to 255.
2. Suspend and resume.
3. Run 'hdparm -B /dev/sda'.

Actual results:
The APM level is 128.

Expected results:
The APM level is 255.

Additional info:
- The hard disk is a Hitachi HTS723216L9SA60 installed in a Lenovo ThinkPad T400.
- Moreover, after resume from suspend, gnome-disk-utility erroneously reports the target value 255 instead of the real value 128.
- It seems that udisk2 needs to provide systemd support with a script in /usr/lib/systemd/system-sleep/ similar to the following which resets the APM level to 254 after resume from suspend:

[ "$1" = "post" ] && exec /usr/sbin/hdparm -B 255 /dev/sda
exit 0
Comment 1 b3nmore 2016-05-02 17:30:43 UTC
It seems, that gnomedisk-utility is reading the conf files in /etc/udisks2/ while udisksd isn't. At least not after resume, since after a fresh boot it is working.

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