Date: Fri, 25 Sep 2009 19:11:59 -0500 From: "Richard Kolkovich" <sarumont@sigil.org> To: Robert Noland <rnoland@FreeBSD.org> Cc: freebsd-x11@freebsd.org Subject: Re: HD4550 DRI issues Message-ID: <20090926001158.GA42914@divination.portal.sigil.org> In-Reply-To: <1253915723.2145.53.camel@balrog.2hip.net> References: <20090923210626.GC46493@magus.portal.sigil.org> <1253741283.2031.334.camel@balrog.2hip.net> <20090924145417.GA2539@magus.portal.sigil.org> <1253812603.2031.1528.camel@balrog.2hip.net> <1253814434.2031.1561.camel@balrog.2hip.net> <20090924181427.GD2539@magus.portal.sigil.org> <20090925143910.GD61689@divination.portal.sigil.org> <1253897144.2065.150.camel@balrog.2hip.net> <20090925173416.GF61689@divination.portal.sigil.org> <1253915723.2145.53.camel@balrog.2hip.net>
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--AhhlLboLdkugWU4S Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Sep 25, 2009 at 04:55:23PM -0500, Robert Noland wrote: > So, things are all correct at this point... and not much happens between > here and the userland print that show corrupted values. Basically all > that happens is an mmap to userspace and print the values from the > userspace perspective... You're not the first report that I have had of > this. (It doesn't appear to be r600 related at all, IIRC prior reports > were on like 9200's) I think it is restricted to PCI/PCI-E radeons, > though given where it appears to be happening I don't see any reason > that it couldn't effect other cards as well. I'm really not certain how > to move forward debugging really, without being able to reproduce it and > break out into gdb to try and inspect memory. There is something > "special" about your setup, since this seems to be a relatively rare > issue. The only other thing that I can think of to do, is to start > adding a bunch of debugging into the mmap routines, but that is going to > get really noisy. >=20 > robert. >=20 Awesome. :-\ If you want to hook up gdb, I can create a shell account for you to do so. = =20 Aside from that, I'm not sure how to proceed. If it's happened on cards as= old as 9200s, I=20 probably won't have much luck with any other radeon card with my current se= tup. =20 --=20 Richard Kolkovich sarumont@sigil.org --AhhlLboLdkugWU4S Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iEYEARECAAYFAkq9XE0ACgkQfXtD1KVAIbCvbwCfZsQaEDhCRpBim0nlcby6LZGc Pn0AoJHHx9nLvTDa464WQec9z2+De9vd =8hYr -----END PGP SIGNATURE----- --AhhlLboLdkugWU4S--
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