#10568 LOW 11.3.0: XO-1 graphical boot hangs if SISUSB VGA adapter attached

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#10568: XO-1 graphical boot hangs if SISUSB VGA adapter attached
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           Reporter:  greenfeld    |       Owner:  dsd                               
               Type:  defect       |      Status:  new                               
           Priority:  low          |   Milestone:  11.3.0                            
          Component:  initscripts  |     Version:  Development source as of this date
         Resolution:               |    Keywords:                                    
        Next_action:  diagnose     |    Verified:  0                                 
Deployment_affected:               |   Blockedby:                                    
           Blocking:               |  
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Changes (by dsd):

 * cc: kevgor (added)


Comment:

 This seems to be caused by OHCI being loaded before EHCI (#10746). Making
 both OHCI and EHCI built into the kernel works around the issue, as in
 this test kernel:
 http://dev.laptop.org/~dsd/20111021/kernel-2.6.35.13_xo1-20111021.1415.olpc.9d949a3.i586.rpm

 USB was originally made modular for XO-1 because it resulted in more
 attractive suspend/resume behaviour (IIRC, can't find references). Need to
 see if it would be safe to make them builtin as in the above kernel, or
 alternatively we can look at udev to see if there is a way that it can
 enforce this load order quirk.

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Ticket URL: <http://dev.laptop.org/ticket/10568#comment:14>
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