[Bug 987664] Re: allow to set restart/resume time in shutdown dialog
hakaishi
hakaishi at web.de
Sun Jun 11 11:33:32 UTC 2017
** No longer affects: qt-shutdown-p
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https://bugs.launchpad.net/bugs/987664
Title:
allow to set restart/resume time in shutdown dialog
Status in Shutdown Timer Extension for GNOME shell:
New
Status in consolekit package in Ubuntu:
Confirmed
Bug description:
The desktop environments would help saving energy, if their shutdown
dialogs could by default provide the option (button/checkbox) to
schedule a restart.
Linux provides a simple way to schedule a restart event that is
particularly usefull in conjuction with initiating or scheduling a
shutdown or suspend.
rtcwake -m no -s <seconds-util-start-event>
Howerever, just as the shutdown command it requires root privileges.
Thus the need for a similar consolekit support.
The particular command given in the example above avoids that rtcwake does any switching into another power state (no new mode "-m no").
This allows that all power state switching is still contolled by whatever power management (userspace) tools are installed, which may often be more stable than the pure kernel/rtcwake method, especially on resume.
To test it, just schedule a wake event like above as root, then do a
regular shutdown/suspend. Wait, and watch how the real time clock
triggers the scheduled power up event and the machine comes back up.
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