Date: Fri, 17 Feb 2012 11:48:20 +0100 From: Uffe Jakobsen <uffe@uffe.org> To: freebsd-hackers@FreeBSD.org Cc: Alex Goncharov <alex-goncharov@comcast.net> Subject: Re: 8 to 9: A longer wait early in the boot of a (damaged) Compaq Presario Message-ID: <4F3E3074.20308@uffe.org> In-Reply-To: <E1Ry5xr-000HUH-6Q@hans3> References: <E1Ry5E4-000HRq-ED@hans3> <4F3D460E.7090507@gmail.com> <E1Ry5xr-000HUH-6Q@hans3>
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On 2012-02-16 19:21, Alex Goncharov wrote: > ,--- I/Alex (Thu, 16 Feb 2012 12:34:36 -0500) ----* > | There was one other odd thing that I noticed then: while Debian booted > | without a delay, FreeBSD 8 made a long pause after passing the boot > | menu: it would display the '/' character and sit there for some > | non-trivial amount of seconds. I assumed that it was doing some BIOS > | querying, and with BIOS (firmware?) being damaged, it took the system > | some time to figure things out... perhaps it was re-querying BIOS, > | seeing the insane value of 0 for an interface's Ethernet address (I > | have many machines running FreeBSD, including multiple laptops, and > | this machine is unique in the long bootup pause). > `-------------------------------------------------* > ,--- Rares Aioanei (Thu, 16 Feb 2012 20:08:14 +0200) ----* > | I get the same on my HP Pavilion dv9750 laptop, but with an intact BIOS, > | afaict. And that happens regardless of the wi-fi card's state (eg > | disabled or enabled from the hardware button). Maybe this helps. > `--------------------------------------------------------* > > To add to the fact base: I don't have any of this with my HP Pavilion > DV6-1334US: neither with FreeBSD 8 nor 9 (upgraded that laptop two > days ago, too.) > FreeBSD 8.x has a memory test that takes place quite early during kernel startup - I have seen a system with 128Gb ram hang for 1-2 minuttes on this account - quite annoying delay if you ask me. There were discussions about removing this memtest feature in FreeBSD 9 but I do not know if it made it into the tree in time... but you'll need to have lots of memory for this to kickin - not very likely with your laptop. Another similar boot delay/hang seen with FreeBSD 8.x with certain SATA controllers. I have a FreeBSD 8.x system that hangs exactly 75 seconds (timeout?) during (every) kernel startup when running SATA in AHCI mode (setup within the BIOS) - if switched back to SATA IDE (compatible) mode the system kernel starts instantly with out the 75 sec (timeout) hang. This problem seems resolved by the SATA/AHCI driver overhaul that FreeBSD 9 got. Both problems are visually identical (as far as I remember) - an unexplainable delay during kernel startup - it sleeps/hangs before anything is printed on screen... HTH /Uffe
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