Date: Wed, 1 May 2002 15:47:00 -0700 (PDT) From: Doug White <dwhite@resnet.uoregon.edu> To: "PSI, Mike Smith" <mlsmith@mitre.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: PnP OS Problem Message-ID: <20020501154352.B81172-100000@resnet.uoregon.edu> In-Reply-To: <3CD02F48.ED9BFC45@mitre.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, 1 May 2002, PSI, Mike Smith wrote: > I just noticed that someone else ran into a problem with the solution > "Disable PNP OS in the BIOS". I too ran into that some time back for a > very different problem. If it weren't for the great help from this list, > I would probably still be chasing that one down. > > Now I haven't installed FreeBSD for some time so this may be done > already. > > Is there ANY benefit to having PNP OS enabled?? In a PnP system, the ISA devices initially power up unconfigured. With PnP BIOS off/no, the BIOS will detect and give resources for the devices; with it set to Yes/On, it leaves them unconfigured to let Windows do it itself (since it likes to). FreeBSD does not have code to handle assigning PNP resources, or at least code that works well :) (There is the PNPBIOS kernel option, but I'm not sure that works anymore.) Not all BIOSen work properly even with PNP BIOS off -- they miss devices, sound cards being the most common. PCI is of course immune from these problems since it has resource assignment built-in. Doug White | FreeBSD: The Power to Serve dwhite@resnet.uoregon.edu | www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020501154352.B81172-100000>