Bug 212450

Summary:	Suspend with Fn+F4 broken after revision 283678
Product:	Base System	Reporter:	Joseph Mingrone <jrm>
Component:	kern	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	New ---
Severity:	Affects Only Me	CC:	mmokhi, rpaulo, swills
Priority:	---	Keywords:	regression
Version:	11.0-RC1
Hardware:	amd64
OS:	Any

Description Joseph Mingrone freebsd_committer

2016-09-07 04:25:36 UTC

After revision 283678, which changed sys/dev/acpi_support/acpi_ibm.c, suspending with Fn+F4 no longer works on a Lenovo X220.

If the snippet below is removed from acpi_ibm_attach(), suspend works again.

	/* Enable events by default. */
	ACPI_SERIAL_BEGIN(ibm);
	acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 1);
	ACPI_SERIAL_END(ibm);

Joseph

Comment 1 Joseph Mingrone freebsd_committer

2016-09-07 14:32:06 UTC

For anyone affected by this, sysctl dev.acpi_ibm.0.events=0 undoes those lines and gives the old behaviour.

Comment 2 Mark Linimon freebsd_committer

2016-09-11 01:28:58 UTC

NB: 283678 was by rpaulo, but it was 15 months ago.