Date: Thu, 21 May 2020 19:56:59 -0400 From: Diane Bruce <db@db.net> To: Andreas Nilsson <andrnils@gmail.com> Cc: cem@freebsd.org, "Andrey V. Elsukov" <bu7cher@yandex.ru>, Current FreeBSD <freebsd-current@freebsd.org> Subject: Re: hwpstate_intel hangs kernel Message-ID: <20200521235659.GA14173@night.db.net> In-Reply-To: <CAPS9%2BSs__9HTg6RAu1JrLa5YOB8hK1%2BZFD05mNP%2BSnih8qiO8w@mail.gmail.com> References: <CAPS9%2BSukk_MFzUFBjs2K8bjsayL%2BTedhtY9aC8VF-UCHKEpp-w@mail.gmail.com> <a2a81eb9-c7d8-869a-5024-6bf0000c22a1@yandex.ru> <ccebd015-ae44-b4b9-aca6-080528bc0d64@yandex.ru> <CAG6CVpXq1xL=u=yYWd_srCDFb2s1asN%2Bm9%2BGA43WF3%2BQmpq5aw@mail.gmail.com> <CAPS9%2BSuniZZ6mvQzFmMvY=5i-G%2BOjCF5A_yMnBYmrZWo77dOug@mail.gmail.com> <CAPS9%2BSs__9HTg6RAu1JrLa5YOB8hK1%2BZFD05mNP%2BSnih8qiO8w@mail.gmail.com>
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On Wed, Feb 05, 2020 at 02:45:50PM +0100, Andreas Nilsson wrote: Ok I am going to respond to this old email from February.. > Hello, > > I upgraded to a newer version, git 87d669d3863-c266265, and I do not > experience the random hang anymore. The machine still hangs on boot on > "hwpstate_intel0: <Intel Speed Shift> on cpu0" unless I set > 'hint.hwpstate_intel.0.disabled="1"' in loader.conf. > As a few others know on IRC I ran into exactly this same problem on a brand new Lenovo Carbon. I missed this thread somehow. I also had to bisect the commit. Would it be possible to put a note into UPDATING and default to disabled=1 for now? ;) ... > > Best regards > Andreas > > On Sat, Feb 1, 2020 at 11:26 PM Andreas Nilsson <andrnils@gmail.com> wrote: > > > Hello Conrad, > > > > thank you Andrey for bisecting! I'll try with that hint and see how it > > works for me. > > > > Best regards > > Andreas > > > > On Sat, Feb 1, 2020, 18:18 Conrad Meyer <cem@freebsd.org> wrote: > > > >> Hi Andrey, > >> > >> Please try 'hint.hwpstate_intel.0.disabled="1"' as a workaround for now. > >> > >> I think I have identified at least one problematic piece of code, > >> although I don't know if it's the root cause. I will go ahead and fix > >> that, which may not fix the hang, and also add some debug printfs that > >> can be enabled to help identify the real issue. > >> > >> Thanks for the report and bisect. > >> > >> Best, > >> Conrad > >> > >> On Sat, Feb 1, 2020 at 6:06 AM Andrey V. Elsukov <bu7cher@yandex.ru> > >> wrote: > >> > > >> > 31.01.2020 18:11, Andrey V. Elsukov пишет: > >> > > On 24.01.2020 19:52, Andreas Nilsson wrote: > >> > >> It hangs during kernel boot and the last message printed on console > >> is: > >> > >> hwpstate_intel0: <Intel Speed Shift> on cpu0 > >> > > > >> > > Hi, > >> > > > >> > > Did you find the cause of this hang? > >> > > I also tried to update today from r350816 to r357330. But my Lenovo X1 > >> > > Carbon 4th hangs on the same message. > >> > > > >> > > >> > Hi, > >> > > >> > I have bisected the bad commit, it is r357002. Yep. I also had to bisect this from what is now some 5 months ago :-( Diane -- - db@FreeBSD.org db@db.net http://www.db.net/~db
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