Date: Wed, 22 Oct 2008 19:44:08 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: freebsd-acpi@FreeBSD.org Cc: Alexander Motin <mav@freebsd.org>, freebsd-amd64@freebsd.org, Nate Lawson <nate@root.org> Subject: Re: Semi-working patch for amd64 suspend/resume Message-ID: <200810221944.13406.jkim@FreeBSD.org> In-Reply-To: <48FF9AFA.3030201@root.org> References: <1224616985.00027652.1224606603@10.7.7.3> <48FF9925.4090007@FreeBSD.org> <48FF9AFA.3030201@root.org>
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On Wednesday 22 October 2008 05:28 pm, Nate Lawson wrote: > Alexander Motin wrote: > > Jung-uk Kim wrote: > >> When you do 'sysctl debug.acpi.suspend_bounce=1' and 'acpiconf > >> -s 3', does it bounce back? If it does not, there are other > >> problems, e.g., device drivers. On my desktop, for example, > >> vga(4) tries to restore previous state while resuming but it > >> hangs system. In fact, I believe ISA-era EGA/VGA save/restore > >> routines do not work for modern graphics cards at all. :-( > > > > Test passed from both console and XOrg. I have integrated i965GM > > video. > > > > Here is verbose messages from that trip "there and back again": > > > > Oct 23 00:11:55 mavbook acpi: suspend at 20081023 00:11:55 > > > > Oct 23 00:12:00 mavbook kernel: vga0: saving 68 bytes of video > > state Oct 23 00:12:00 mavbook kernel: pci0:0:2:0: Transition from > > D0 to D3 Oct 23 00:12:00 mavbook kernel: pci0:0:2:1: Transition > > from D0 to D3 Oct 23 00:12:00 mavbook kernel: pci0:0:26:7: > > Transition from D0 to D3 Oct 23 00:12:00 mavbook kernel: acpi: > > bad write to port 0x080 (32), val 0xbb > > Oct 23 00:12:06 mavbook kernel: pci0:0:27:0: Transition from D0 > > to D3 Oct 23 00:12:06 mavbook kernel: pci0:0:31:2: Transition > > from D0 to D3 > > > > Oct 23 00:12:06 mavbook kernel: pci0:0:2:0: Transition from D3 to > > D0 Oct 23 00:12:06 mavbook kernel: pci0:0:2:1: Transition from D3 > > to D0 Oct 23 00:12:06 mavbook kernel: acpi: bad write to port > > 0x080 (32), val 0xaa > > Oct 23 00:12:06 mavbook kernel: pci0:0:26:7: Transition from D3 > > to D0 Oct 23 00:12:06 mavbook kernel: pci0:0:27:0: Transition > > from D3 to D0 Oct 23 00:12:06 mavbook kernel: pci0:0:31:2: > > Transition from D3 to D0 > > That's kind of weird. The above devices were turned off (D3) then > back on again (D0). I'm wondering about that blocked write also. The port 0x80 is usually used for BIOS debugging. http://www.coreboot.org/FAQ#POST_card Probably BIOS developer forgot to comment out the lines. :-) Jung-uk Kim
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