#5418 NORM Future : powersave mode non-functional.

[Zarro Boogs per Child]

#5418: powersave mode non-functional.
-----------------------+----------------------------------------------------
  Reporter:  dwmw2     |       Owner:  mbletsas      
      Type:  defect    |      Status:  new           
  Priority:  normal    |   Milestone:  Future Release
 Component:  wireless  |     Version:                
Resolution:            |    Keywords:                
  Verified:  0         |  
-----------------------+----------------------------------------------------
Changes (by rchokshi):

 * cc: rchokshi (added)


Comment:

 On-chip power saving modes have not been implemented / turned ON in the
 firmware. They have not been tested also. Reasons:
 (1) power save mode when mesh is turned ON is very tricky and we are
 working on the design/implementation right now.
 (2) power save mode in infrastructure mode (connected to an AP) is
 implemented but not turned ON. This has quite a lot of repurcussions on
 the firmware state machine transitions. Moreover, this is a USB device and
 hence how this would interoperate with the USB suspend/resume becomes the
 big question.

 Power management on the host side (i.e. through USB suspend/resume) was
 the target before deployment of XOs.

 That said, we are still working on the on-chip power management feature.
 But this will not be in place for at least another month or so. We will
 have a full-blown power management scheme for the device by that time.

 So, I would suggest to halt your efforts on enabling power save mode for
 now.

-- 
Ticket URL: <http://dev.laptop.org/ticket/5418#comment:7>
One Laptop Per Child <http://dev.laptop.org>
OLPC bug tracking system