From owner-freebsd-questions Wed Mar 3 23:26:36 1999 Delivered-To: freebsd-questions@freebsd.org Received: from dsp7.ee.uct.ac.za (dsp7.ee.uct.ac.za [137.158.135.194]) by hub.freebsd.org (Postfix) with ESMTP id 4B78D14DE2 for ; Wed, 3 Mar 1999 23:26:04 -0800 (PST) (envelope-from nicolls@dsp7.ee.uct.ac.za) Received: (from nicolls@localhost) by dsp7.ee.uct.ac.za (8.9.2/8.9.2) id JAA76608; Thu, 4 Mar 1999 09:27:22 +0200 (SAST) (envelope-from nicolls) Message-ID: X-Mailer: XFMail 1.3 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <19990303190246.A55284@luke.pmr.com> Date: Thu, 04 Mar 1999 09:27:22 +0200 (SAST) Organization: University of Cape Town From: Fred Nicolls To: Bob Willcox Subject: RE: snd: Unable to allocate 131072 bytes of buffer Cc: questions list Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 04-Mar-99 Bob Willcox wrote: > Since adding more memory to my system (256MB to 512MB) I am now getting > this error message at boot time for my sound blaster card. Anyone have > any idea on how to fix this? I have the same problem, also with a SB16. It seems that *no* soundcard will work under FreeBSD in a machine with 512MB RAM. The problem has been reported at some length in PR kern/9515. In the opinion of the author of the PR the problem lies in the general ISA DMA implementation and the way memory is allocated for page tables. It's even worse when you use the pcm sound drivers. Then no error is reported, but writing to the sound device causes a kernel panic. Kind of sad that you've got a super-monster machine which won't even squeak. Introduces a kind of sound/performance trade-off... Fred --- Frederick Nicolls Digital Image Processing Laboratory Tel: +27 21 650 3466 Department of Electrical Engineering Fax: +27 21 650 3465 University of Cape Town To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message