Re: [PATCH] x86/ACPI: Make Sony Vaio Z1 series to use "reboot=pci"default

From: Adam Williamson
Date: Fri Oct 25 2013 - 21:27:45 EST

On Fri, 2013-10-25 at 18:16 +0100, Linus Torvalds wrote:
> On Fri, Oct 25, 2013 at 5:47 PM, Adam Williamson <awilliam@xxxxxxxxxx> wrote:
> >
> > I don't, but one comment I could add is that reboot _used_ to work okay
> > on the Z1. And I _think_ it's worked OK since the April 2011 commit you
> > mention (so the introduction of that didn't break it), but I can't
> > absolutely swear to it.
> It might be interesting to try, and if it used to work with the acpi
> method, use bisection to see when it stopped working..

So I might have trouble bisecting, as stone-age kernels don't seem to
boot on my installed system cleanly any more; some kind of
incompatibility with my encrypted partitions. But I booted an F16 live
image, which has kernel 3.1.0, and that reboots quickly. If I'm reading
things correctly, mjg59's patch went into kernel 2.6.39, so if that was
causing the problem, I'd expect the F16 live image to have a slow

I'll go back through the live images for F17->F19 and see when the
reboot gets slow, which will give us a very rough range to look at, at
least. I'll also try Rafael's suggestion re acpi_osi.
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net

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