Openmoko Bug #1841: white screen of death (WSOD) after resume

[Openmoko Public Trac]

#1841: white screen of death (WSOD) after resume
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    Reporter:  Rorschach    |        Owner:  openmoko-devel
        Type:  defect       |       Status:  new           
    Priority:  highest      |    Milestone:                
   Component:  unknown      |      Version:  GTA02v5       
    Severity:  critical     |   Resolution:                
    Keywords:  wsod,resume  |     Haspatch:  0             
   Blockedby:               |    Estimated:                
 Patchreview:               |     Blocking:                
Reproducible:  always       |  
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Comment(by nicolas.dufresne):

 Warming the device before resume worked. No WSOD. I hope this information
 will help.

 While I was waiting, I've read the specification of the TD028TTEC1 LCD.
 There is a contradiction in operating temperature, on one place they say
 -20 to 60 and at another place it's -10 to 60 (which is more common
 value). In both cases my test is valid since it's within operating
 temperature range (actually the phone will not reach -5 in only 5
 minutes). I've also noticed that according to the spec it take a minimum
 250 ms for the LCD to wake from suspend. I tought this was a lot of time
 since return from sleep on the Freerunner does not take more than a
 second. Anyway, that might not be relevent, but maybe it would be nice to
 keep it in mind while looking into a software solution.

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/1841#comment:59>
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