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

Openmoko Public Trac bugs at
Tue Dec 2 09:49:40 CET 2008

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

Comment(by andy):

 Replying to [comment:81 nicolas.dufresne]:
 > Andy: I've try the reset switch but it won't clear the white screen. I
 can see the kernel output telling me it did something. I've also try to
 manually switch the driver state, but again it did not clear the WSOD.
 Maybe we have to reset everything on the SPI ?

 What makes it puzzling is I can confirm the GPIO from Glamo that form the
 bitbang SPI bus are operational at this time, and the reset /sys thing
 performs a hard reset and the same steps used at boot to re-init the LCM
 asic... and we NEVER see WSOD at boot (the brief one until recently
 doesn't count, it's the backlight coming up before the LCM asic gets

 > Note that I've produce the bug without suspend (just blanking) and I'm
 running latest andy-tracking kernel (2.6.28-GTA02_andy-

 I'm currently imagining that the reports of WSOD on resume are actually
 some form of the blanking WSOD happening immediately afterwards, dreamlike
 as that may sound with no evidence.

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