#6233 HIGH Update.: Screen dims and brightens on B4 (and C2)

Zarro Boogs per Child bugtracker at laptop.org
Fri Feb 15 08:46:15 EST 2008


#6233: Screen dims and brightens on B4 (and C2)
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  Reporter:  cjb                  |       Owner:  cjb                              
      Type:  defect               |      Status:  new                              
  Priority:  high                 |   Milestone:  Update.1                         
 Component:  power manager (OHM)  |     Version:  Development build as of this date
Resolution:                       |    Keywords:                                   
  Verified:  0                    |    Blocking:                                   
 Blockedby:                       |  
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Comment(by ffm):

 Replying to [comment:8 gnu]:
 > Why should B4's not dim or blank the screen?  The hardware is perfectly
 capable of it, and it saves power.
 >

 No, it isn't. When resuming from suspend or sleep , a few bits of the ram
 are sometimes flipped. When tested in the lab, although some machines took
 a while, _all_ machines eventualy crashed.

 See http://wiki.laptop.org/go/B4_Suspend_ECR and
 http://wiki.laptop.org/go/Hardware_specification#Beta_Test_4_Systems_.28BTest-4.2C_or_B4.29

-- 
Ticket URL: <http://dev.laptop.org/ticket/6233#comment:9>
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