Date: Mon, 31 Aug 2015 09:13:44 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: FreeBSD Current <freebsd-current@FreeBSD.org>, "freebsd-acpi@freebsd.org" <freebsd-acpi@FreeBSD.org> Subject: acpi suspend debugging techniques? Message-ID: <55E3F098.9060806@FreeBSD.org>
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I would appreciate any pointers at how to debug an ACPI suspend problem that I have. What I have so far. The system hangs when I try to suspend it and it gets reset by a watchdog. Setting debug.acpi.suspend_bounce=1 does not make any difference, so the hang happens before the final sleep code is executed. I think that the device suspend stage is executed, because disks get spun down and video signals gets cut off. I could enable / add some debug printfs, but I suppose that their output would get lost due to the above. RAM content unfortunately does not survive across the resets. -- Andriy Gapon
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