Date: Tue, 30 Dec 2008 14:03:34 -0500 From: Robert Noland <rnoland@FreeBSD.org> To: David Wolfskill <david@catwhisker.org> Cc: current@freebsd.org Subject: Re: Laptop w/ dark screen & no (working) keyboard Message-ID: <1230663814.46401.25.camel@squirrel.corp.cox.com> In-Reply-To: <20081230183754.GN4100@albert.catwhisker.org> References: <20081209230134.GC60731@albert.catwhisker.org> <20081209232209.GD60731@albert.catwhisker.org> <20081230170926.GK4100@albert.catwhisker.org> <A08D3C37-B770-4144-A8D4-97A758519288@gmail.com> <20081230180420.GM4100@albert.catwhisker.org> <1230661597.46401.18.camel@squirrel.corp.cox.com> <20081230183754.GN4100@albert.catwhisker.org>
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--=-d/Knfpoz16eVXfV5JJu7 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Tue, 2008-12-30 at 10:37 -0800, David Wolfskill wrote: > On Tue, Dec 30, 2008 at 01:26:37PM -0500, Robert Noland wrote: > > ... > > It is possible that drm is waiting for resources, but I'm doubtful that > > drm is the real problem. It sounds like the screen is going black when > > X attempts to start. >=20 > Yes, it's in the transition from "text" to "graphics" mode. I use xdm > on the laptop; I also run RELENG_6 & RELENG_7 (from other slices), and > until the first week of December, I don't recall seeing this before. >=20 > > You could try disabling drm in your Xorg.conf and > > see it that helps. (Option "DRI" "off" in the device section). >=20 > OK; worth trying. >=20 > > Do all > > of the drm messages appear on the console before it hangs? >=20 > Yes, but they also appear when it doesn't hang (whether running > RELENG_6, RELENG_7, or HEAD). >=20 > > I'm most suspicious of the acpi errors/warnings, but that isn't > > an area that I have experience with. >=20 > I believe an appropriate technical term is "black art." :-} >=20 > OK; the laptop has rebooted (following the above-cited change), and for > a "sample size" of 1, there was no period longer than about a second or > so that the screen stayed dark. >=20 > So if that's repeatable, I'd suspect something involving DRI/drm, > possibly involving interrupt handling...? Ok, the most recent change that might be relavent was on Dec 18. r186295 | rnoland | 2008-12-18 16:04:50 -0500 (Thu, 18 Dec 2008) | 10 lines Though that only pertains to pci/pcie based radeons and it looked like yours was agp. You can send me an xorg.log to verify. robert. > > robert. >=20 > Thanks for the suggestion. >=20 > Peace, > david --=-d/Knfpoz16eVXfV5JJu7 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEABECAAYFAklacIYACgkQM4TrQ4qfROMRPACeMVM1qZHYv9FFFCumpHmXSOCS dKEAn0cqpqojSP0yFPk7yDT/BuTHz+yK =gZIC -----END PGP SIGNATURE----- --=-d/Knfpoz16eVXfV5JJu7--
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