Date: Wed, 12 Sep 2012 15:57:52 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Lars Engels <lars.engels@0x20.net> Cc: Thomas Steen Rasmussen <thomas@gibfest.dk>, freebsd-stable@FreeBSD.org Subject: Re: Thinkpad X61s cannot boot 9.1-BETA1 Message-ID: <505086D0.9080704@FreeBSD.org> In-Reply-To: <50508606.4040704@FreeBSD.org> References: <5007CFE6.6030808@intersonic.se> <500853DA.8050502@intersonic.se> <loom.20120720T160400-766@post.gmane.org> <201207311632.30938.jhb@freebsd.org> <alpine.BSF.2.00.1208211948290.2749@thinkpad.nowhere.local> <20120822093317.GW32916@e-new.0x20.net> <5034D4CD.4030301@gibfest.dk> <20120822165239.GX32916@e-new.0x20.net> <50351EA4.4040401@gibfest.dk> <20120912113425.GK20762@e-new.0x20.net> <50508606.4040704@FreeBSD.org>
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on 12/09/2012 15:54 Andriy Gapon said the following: > on 12/09/2012 14:34 Lars Engels said the following: >> Meanwhile I found out what's the cause of it. On 9.x it only hung from >> time to time, but I tried a few weeks old CURRENT and it hung at every >> boot at the same time. >> With enabled verbose boot it looked like this: >> http://bsd-geek.de/FreeBSD/IMAG0190.jpg >> >> Then I removed the AC cable and booted from battery and that worked. So >> it seems to me that some ACPI change in CURRENT made the situation even >> worse. >> > > Could you try to play with different eventtimer settings (preferably in current) ? > You can use this thread / PR as a guide: > http://thread.gmane.org/gmane.os.freebsd.devel.amd64/14480/focus=14495 > > The place where boot stop looks suspiciously close to the place where timer > interrupts should start driving the system. > Just in case. My point is that your system might using a timer that stops in certain (deeper) C-states. Generally FreeBSD disables deeper C-states in such a situation, but your system may require additional quirks. -- Andriy Gapon
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