No display after resume in r196086

[Damian Gerow]

Attilio Rao wrote:
: > : > The script does not run when resuming in graphics mode, unfortunately.
: > : > Try as I might, I just don't get anything.  I'm not sure what exactly
: > : > the system is doing when it resumes, as attempts to create files on
: > : > the local fs seem to fail.
: > :
: > : You have to manually break in DDB for that.
: > : BTW, differently from GENERIC, remove WITNESS_SKIPSPIN, just in case.
: >
: > After removing WITNESS_SKIPSPIN, the ddb script works.  I've included the
: > output from textdump below.
: 
: Hans suggested to try this patch:
: http://p4db.freebsd.org/chv.cgi?CH=167286

I've applied the patch, and the panic no longer happens.  Unfortunately, I
still no longer receive my display; the behaviour of the system has gone
back to before the removal of SKIPSPIN from GENERIC.

  - Damian