On 04/19/2011 08:09 PM, Jason Warner wrote:
Hi Everyone - Sending this on behalf of John Lea, desktop design lead.

==============================================

Currently Ubuntu contains two separate sleep functions, suspend and
hibernate.  This choice confuses users and is a un-necessary
complication to 'sleeping' the computer.  The proposed change is to
combine both 'suspend' and 'hibernate' into a single 'sleep' function.
  When the user presses 'sleep', the computer should both suspend and
hibernate simultaneously.  The computer remains suspended for a set
period of time (e.g. 30min) or until the battery charge falls below a
set level.  At the point the suspend state is discarded, and if  the
user wakes the computer after this point their state is restored from
hibernate.  However if the user wakes the computer before the suspend
state is discarded, the computer is restored from 'suspend' and the
'hibernate' state is discarded.

I'm not a fan of this idea.

If suspend works for the vast majority of users, why complicate it by adding a timed "auto-hibernate" to the equation? As a few folks have pointed out, what if hibernate fails? What if the BIOS doesn't properly support a wake timer?

I'm pretty sure the latter criteria for triggering hibernate ( critical low-battery event while suspended ) already works. It essentially wakes the system from suspend, the power manager notices the battery is critically low, and invokes a hibernate. The timed scenario would work in a similar manner, except that after a timer event wakes the system, the power manager would have to have added logic to trigger the hibernate.

I'm much more in favor of hiding or even removing hibernate from the UI, as long as it remains an option for "critical low-battery" event for those systems that properly support hibernate.

Regards,
/tony




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