Date: Tue, 22 Nov 2005 03:19:07 -0800 From: "Ted Mittelstaedt" <tedm@toybox.placo.com> To: "Hans Nieser" <hans@nieser.net>, <freebsd-questions@freebsd.org> Subject: RE: Does FreeBSD 6.0 fully support PCI-Express? Message-ID: <LOBBIFDAGNMAMLGJJCKNAENKFCAA.tedm@toybox.placo.com> In-Reply-To: <43826CFC.3030003@nieser.net>
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This is correct. The various driver authors who have been affected by the PCI Express issue have implemented logic in their probe code that activates the devices on pci express busses, so for most devices it's a non-issue. But this is kludgy and there's been discussion in the core as to try to get someone to write a PCI Express driver that would talk to the bus and would handle the devices the way the buss is intended. You still get weirdness though - for example on several Intel motherboards that have PCI Express that I've run FBSD on, the BSD kernel complains about no interrupt being available for the serial port. But the serial port works anyway. I'm surprised you didn't find this with Google, it's in there. Perhaps look through the mailing list archives? As far as I know Nvidia hasn't allowed Xorg to write drivers for their cards, all the nvidia drivers out there are binaries from Nvidia. This for me would cross that card off my list. In any case, this really isn't a FreeBSD issue, it's an Xorg issue and you should ask on those mailing lists. Others have had Nvidia troubles for other reasons and should be able to better advise you. Ted >-----Original Message----- >From: owner-freebsd-questions@freebsd.org >[mailto:owner-freebsd-questions@freebsd.org]On Behalf Of Hans Nieser >Sent: Monday, November 21, 2005 4:58 PM >To: freebsd-questions@freebsd.org >Subject: Does FreeBSD 6.0 fully support PCI-Express? > > >Hi list, > >I've been having troubles getting OpenGL applications' >performance up to >par. I have an Nvidia Geforce 6800GT with a PCI-Express interface and I >use nvidia's closed FreeBSD drivers. > >I have been told that FreeBSD (and consequently the nvidia >driver) do not >fully support PCI-Express which makes my card operate at the >same speed of >a plain old PCI bus, which would be a logical explanation for >my troubles. >I have however not been able to find _anything_ on the matter on google >and I am now wondering how much truth there is to this. > >My question is in the subject, I hope someone can clarify this as I it >will help me decide to get an AGP card instead or perhaps keep >trying to >figure out if I have misconfigured something. > >Thanks in advance, > >HN >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to >"freebsd-questions-unsubscribe@freebsd.org" > >-- >No virus found in this incoming message. >Checked by AVG Free Edition. >Version: 7.1.362 / Virus Database: 267.13.4/176 - Release Date: >11/20/2005 >
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