Date: Sat, 23 Feb 2008 00:03:35 +0100 From: "Danny Pansters" <danny@ricin.com> To: freebsd-multimedia@freebsd.org Subject: Re: sbc: isa plug-n-play Message-ID: <200802230003.35429.danny@ricin.com> In-Reply-To: <20080222180012.aeda99e5.torfinn.ingolfsen@broadpark.no> References: <47BEF597.9070503@icyb.net.ua> <20080222180012.aeda99e5.torfinn.ingolfsen@broadpark.no>
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On Friday 22 February 2008 18:00:12 Torfinn Ingolfsen wrote: > On Fri, 22 Feb 2008 18:17:27 +0200 > > Andriy Gapon <avg@icyb.net.ua> wrote: > > Everything works great. But recently I had an itch to go trough BIOS > > settings. I spotted one named "Plug-n-Play OS" and it was set to > > The BIOS setting "Plug and Play OS" usually means that the OS will do > its own little dance to set up any devices, so the bios just leaves > them alone. > > > After that no joy, the soundcard stopped to work. It was detected as > > before, there is no difference in dmesg whatsoever, but it did not > > Are you sure that it was detected _exactly_ as before? With the same > irq(s), dma channels and so on? > > > So I disabled the option again and everything is fine. > > Practical conclusion: don't do it. > > Question of curiosity: what is it that BIOS can do with this card that > > our driver can not ? Stuff for windows. > > Well, the bios (and acpi on systems that have it) set up devices by > assigning them irqs, io, memory and whatnot, if I undertstand this > correctly. > > My understanding is that FreeBSD uses this information to attach drivers > to the devices. If the devices are not set up correctly, FreeBSD either > might not find them or it can't use them correctly. Dan
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