#4019 NORM Never A: DCON corruption on shutdown.

[Zarro Boogs per Child]

#4019: DCON corruption on shutdown.
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 Reporter:  cscott                        |       Owner:  mlj           
     Type:  defect                        |      Status:  new           
 Priority:  normal                        |   Milestone:  Never Assigned
Component:  hardware                      |     Version:                
 Keywords:  wad, Arnold.Kao at quantatw.com  |    Verified:  0             
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 With build 612, we put the UL warning on the screen and then freeze the
 DCON during the shutdown process.  Shutdown should then take a few seconds
 to unmount filesystems, etc, and then poweroff the machine.

 In actual practice, I occasionally see garbage on the screen (completely
 filled with random pixels) instead of the expected UL warning, and the
 machine fails to poweroff after the expected delay.

 It appears that the DCON freeze is corrupting at least the contents of the
 DCON buffer, possibly enough of main memory to crash the shutdown process.

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Ticket URL: <https://dev.laptop.org/ticket/4019>
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