Date: Sat, 8 Sep 2012 16:10:07 GMT From: Alexander Motin <mav@FreeBSD.org> To: freebsd-amd64@FreeBSD.org Subject: Re: amd64/171355: FreeBSD 9.1rc1 (and 10-HEAD) not booting on HP Pavilion g6 2147sl Message-ID: <201209081610.q88GA7IK095953@freefall.freebsd.org>
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The following reply was made to PR amd64/171355; it has been noted by GNATS. From: Alexander Motin <mav@FreeBSD.org> To: Stefano Marinelli <stefano@dragas.it> Cc: attilio@freebsd.org, bug-followup@FreeBSD.org Subject: Re: amd64/171355: FreeBSD 9.1rc1 (and 10-HEAD) not booting on HP Pavilion g6 2147sl Date: Sat, 08 Sep 2012 19:04:56 +0300 On 08.09.2012 16:38, Stefano Marinelli wrote: > >> Could you try to enable CAM debugging by setting kern.cam.dflags=0xff loader tunable either from loader prompt or /boot/loader.conf? It should tell us on what stage of device detection hang happens. > > > Tried that. I can't dmesg, but here's a picture of the screen grabbed just after the hang: http://www.dragas.org/~draga/IMG_20120908_153219.jpg Thank you. Unluckily it doesn't show much. I see two things there: 1) probe of the ATAPI device on second AHCI channel that completed perfectly without any visible problem; 2) probe start for some device on ctl2cam0 virtual bus that didn't completed there, but it is unclear whether it is related to the problem or just was running in unlucky time. I have no experience to tell what behavior to expect from it. We should somehow try to find out what happened with disk on first AHCI channel. Unluckily it is impossible to specify single bus for debugging during boot time. So unless your camera can do high-speed series of shots to grab previous screens all we can do is to reduce log details to make them fit the screen. Please try to set kern.cam.dflags separately to 0x40, 0x08 and 0x01, and send me the outputs. -- Alexander Motin
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