SessionHandling

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== When suspending or hibernating fails ==

There are three errors Ubuntu might receive when trying to suspend or hibernate.

=== Not enough swap space to hibernate ===

=== Swap space is encrypted ===

If you have encrypted swap but have not specified a password for the swap, you would not be able to wake from hibernate. To protect you from this, Ubuntu will not hibernate in the first place. In this case, "Hibernate" should not appear in the session menu in the first place.

In the unlikely event that Ubuntu ''does'' try to hibernate in this situation ...

=== Sleep has already been requested ===

Show nothing extra, because the sleep is happening anyway.

This is an incomplete but living specification on how Ubuntu sessions should work.

As a temporary measure until ExitStrategy is implemented, there should be separate Log Out, Sleep, Hibernate, Restart, and Switch Off commands. The Log Out, Restart, and Switch Off commands should have confirmation alerts. The “Sleep” and “Switch Off” terminology should be used consistently across Ubuntu.

Packages affected: gdm, gnome-power-manager, gnome-session, indicator-session

Common alert elements

The primary action button should respond to the Enter key, and should not have any other access key. The Cancel button should respond to the Esc key, and should not have any other access key. None of the buttons should have icons.

Log Out

If updates that require a restart are waiting to be installed:

log-out-restart.jpg

The “Restart” button should have the access key R. If you do not have permission to restart without authenticating, the button label should end with an ellipsis.

Otherwise:

log-out.jpg

Restart

restart.jpg

If you do not have permission to restart without authenticating, the button label should end with an ellipsis.

Switch Off

switch-off.jpg

(The phrase “shut down” is used here in the primary text as a hint for people who are used to “shut down” from previous versions or other OSes.)

If you do not have permission to switch off without authenticating, the button label should end with an ellipsis.

When suspending or hibernating fails

There are three errors Ubuntu might receive when trying to suspend or hibernate.

Not enough swap space to hibernate

Swap space is encrypted

If you have encrypted swap but have not specified a password for the swap, you would not be able to wake from hibernate. To protect you from this, Ubuntu will not hibernate in the first place. In this case, "Hibernate" should not appear in the session menu in the first place.

In the unlikely event that Ubuntu does try to hibernate in this situation ...

Sleep has already been requested

Show nothing extra, because the sleep is happening anyway.

Implementation plan

  1. In indicator-session, implement the new alerts.

  2. In gdm, change “Suspend” to “Sleep” and “Shut Down” to “Switch Off”.

  3. In gnome-power-manager, change “Suspend” to “Sleep” and “Shutdown” [sic] to “Switch Off”.

  4. In gnome-session’s behemoth dialog, change “Suspend” to “Sleep” and “Shut Down” to “Switch Off”.

  5. In gnome-session, change “System policy prevents stopping the system when other users are logged in” to “To switch off the computer while others are logged in, you need to authenticate.” (with a period).

  6. In gnome-user-guide, change the “Ending a Session” page so that it refers to “Switch Off” instead of “Shut Down”, and has a bullet point for “Sleep” instead of wibbling about some vendors letting you suspend.

  7. Later, move the confirmation alerts from indicator-session to gnome-session.

SessionHandling (last edited 2016-01-08 12:12:56 by mpt)