#8094 HIGH Future : joyride-2301: Backlight always stays on with "Advanced Power Management"

Zarro Boogs per Child bugtracker at laptop.org
Fri Sep 12 08:57:02 EDT 2008


#8094: joyride-2301:  Backlight always stays on with "Advanced Power Management"
-----------------------------------+----------------------------------------
   Reporter:  thomaswamm           |       Owner:                
       Type:  defect               |      Status:  reopened      
   Priority:  high                 |   Milestone:  Future Release
  Component:  power manager (OHM)  |     Version:  not specified 
 Resolution:                       |    Keywords:  relnote       
Next_action:  code                 |    Verified:  0             
  Blockedby:  4606                 |    Blocking:                
-----------------------------------+----------------------------------------
Changes (by gnu):

  * status:  closed => reopened
  * resolution:  duplicate =>
  * blockedby:  => 4606


Comment:

 This does not duplicate #2765 (power down DCON chip to save power); it is
 not even blocked by #2765.  What it is blocked by is #4606 (XO can't
 resume based on a timer).

 The X DPMS code would power off the screen and backlight, if its 20-minute
 timer ever woke it up.  But because after a minute we're suspended, and
 suspend doesn't awaken based on timers, X never gets a chance to do its
 job.  The fix is to resume based on pending timers.

-- 
Ticket URL: <http://dev.laptop.org/ticket/8094#comment:4>
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