>Number:         33033
>Category:       port-i386
>Synopsis:       VM86/KVM86 do not survive an ACPI S3 suspend/resume
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 08 19:00:00 +0000 2006
>Originator:     Jared D. McNeill
>Release:        NetBSD 3.99.15
>Organization:
	
>Environment:
	
	
Architecture: i386
Machine: i386
>Description:
	Not entirely sure yet, but any vm86 or kvm86 calls made after
	I resume from S3 suspend fail. Calling them from the kernel causes
	an 'asynchronous system trap', and applications that make vm86
	calls from userspace dump core.
>How-To-Repeat:
	Enable the powerhook in vesafb, try to drop to S3 suspend and resume
>Fix:
	Unknown. I'm tentatively using the bioscall interface in vesafb's
	powerhook to restore the display on resume; this will not work in
	paletted 8bpp mode though (since setting up the palette depends on
	kvm86_bios_addpage functionality -- as far as I can tell the
	bioscall interface doesn't provide this).

>Unformatted: