#12084 LOW 4-softw: Boot ugliness w. os17 on XO-4

Zarro Boogs per Child bugtracker at laptop.org
Wed Dec 19 10:54:31 EST 2012

#12084: Boot ugliness w. os17 on XO-4
           Reporter:  wad              |       Owner:  jnettlet                         
               Type:  defect           |      Status:  new                              
           Priority:  low              |   Milestone:  4-software                       
          Component:  x window system  |     Version:  Development build as of this date
         Resolution:                   |    Keywords:                                   
        Next_action:  diagnose         |    Verified:  0                                
Deployment_affected:                   |   Blockedby:                                   
           Blocking:                   |  
Changes (by dsd):

 * cc: jnettlet (added)
  * owner:  dsd => jnettlet
  * component:  initscripts => x window system


 The DCON itself seems to be working as normal. Freezing the screen then
 changing vts (in and out of X), all seems good, and the bootanim is
 working until this point.

 However, when X is started, the glitch described here is seen. I've traced
 this down to X's fbdev driver: FBDevScreenInit() calls
 fbdevHWSaveScreen(pScreen, SCREEN_SAVER_ON) which results in a call to

 This is presumably causing a complete power down of the graphics hardware,
 causing the DCON to lose state.

 I guess the problem will go away once we move to a real X driver which
 would be intelligent enough to know that there's no reason to power down
 the hardware here.

Ticket URL: <http://dev.laptop.org/ticket/12084#comment:2>
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