#8006 HIGH 8.2.0 (: joyride-2301: backlight switches off for no good reason

[Zarro Boogs per Child]

#8006: joyride-2301:  backlight switches off for no good reason
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   Reporter:  thomaswamm           |       Owner:  cjb                                               
       Type:  defect               |      Status:  new                                               
   Priority:  high                 |   Milestone:  8.2.0 (was Update.2)                              
  Component:  power manager (OHM)  |     Version:  Development build as of this date                 
 Resolution:                       |    Keywords:  power_manager blocks-:8.2.0 polish:8.2.0 cjbfor8.2
Next_action:  diagnose             |    Verified:  0                                                 
  Blockedby:                       |    Blocking:                                                    
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Comment(by thomaswamm):

 I have tested and confirmed gnu's hypothesis that ctrl-alt-erase (warm
 restart of X/Sugar) will cancel the bug. That's a much easier/faster work-
 around than total reboot, and technically simpler than stopping/starting
 ohmd.

 To prevent the bug, never dim your backlight.

 Gnu's description is a good reason to find and fix the bug: "It's truly
 annoying, mostly because when it hits you, it keeps hitting you over and
 over."  It annoyed me so much I learned how to use Trac, just so I could
 complain. You gotta fix it somehow.

 I am surprised that 1cc is having trouble reproducing the bug. There is
 indeed no known mesh, nor other XO's, anywhere near my place.  I use a
 Linksys wireless router for net access. Perhaps I shall try experiments
 with radio off.  I almost always have either Browse or Firefox running.
 I'll experiment with other activities.

 For now, I can say the bug is still reproducible with 8.2-760.  And I just
 now discovered another clue: the 20-minute screensaver delay is (probably)
 a red herring (irrelevant).

 Further experimentation yields some surprises & simplifications.  This
 ticket is so long and confusing, I am going to make a fresh start in a new
 ticket...

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Ticket URL: <http://dev.laptop.org/ticket/8006#comment:37>
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