Date: Tue, 23 Feb 1999 17:17:58 +0100 From: "Karsten W. Rohrbach" <rohrbach@nacamar.net> To: freebsd-hackers@FreeBSD.ORG Subject: Re: ISA DMA problems if >= 512 Mb RAM? Message-ID: <19990223171758.C2095@nacamar.net> In-Reply-To: <199902230339.EAA05604@dorifer.heim3.tu-clausthal.de>; from Oliver Fromme on Tue, Feb 23, 1999 at 04:39:09AM %2B0100 References: <199902230339.EAA05604@dorifer.heim3.tu-clausthal.de>
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could it be, that there is some side effect with the graphics aperture mapping on intel bx chipset boards? i remember some similar problem with a linux box of a friend of mine, he got a 1542b for scanner connection and the driver refused to alloc the dma buffers. when we changed the graphics aperture from (default) 64mb to 32mb it suddenly worked. dont ask me any details, this was quite a while ago and i am not dug this deep into hardware/bios/motherboard issues... /k Oliver Fromme (olli@dorifer.heim3.tu-clausthal.de) @ Tue, Feb 23, 1999 at 04:39:09AM +0100: > Frank Nobis wrote in list.freebsd-hackers: > > [...] > > I have a P2B-DS with 512 M Ram and AWE64 > > > > Until today I had the same problem. Today I build a new kernel and now > > the problem ist gone. > > Did you change anything significant in your kernel config? > Maybe you threw some drivers away which made the kernel take > up less memory? > > Can you send a diff of your dmesg output from before (when > the problem still existed) and after (when it went away), > please? > > > real memory = 536870912 (524288K bytes) > > avail memory = 519380992 (507208K bytes) > > I'm specifically interested in these two lines. ;-) > > I'd be very happy if the problem is really fixed... However, > this is a production machine, so going to 4.0-current is not > what I intended... > > Regards > Oliver > > -- > Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany > (Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de) > > "In jedem Stück Kohle wartet ein Diamant auf seine Geburt" > (Terry Pratchett) > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message -- "The path of excess leads to the tower of wisdom." -- W. Blake http://www.nacamar.de - http://www.nacamar.net - http://www.webmonster.de http://www.apache.de - http://www.quakeforum.de - finger rohrbach@nacamar.net PGP Key fingerprint = F9 A0 DF 91 74 07 6A 1C 5F 0B E0 6B 4D CD 8C 44 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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