From owner-freebsd-multimedia@FreeBSD.ORG Wed Apr 19 05:46:24 2006 Return-Path: X-Original-To: freebsd-multimedia@freebsd.org Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8842416A401 for ; Wed, 19 Apr 2006 05:46:24 +0000 (UTC) (envelope-from arne_woerner@yahoo.com) Received: from web30301.mail.mud.yahoo.com (web30301.mail.mud.yahoo.com [68.142.200.94]) by mx1.FreeBSD.org (Postfix) with SMTP id 2515743D45 for ; Wed, 19 Apr 2006 05:46:24 +0000 (GMT) (envelope-from arne_woerner@yahoo.com) Received: (qmail 74790 invoked by uid 60001); 19 Apr 2006 05:46:23 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=OoON5CKWhj37tvFOvjBYMZ+Cu+xqf3hrqcfstkIkERCu9BODdt0WRTi98iETKrdqyKiCYu8sRdPwHR2vTwzu3HyoyqJ5n4JVO6ZOYQflEY7K/mUfnqzi5J9GquMQ2V5RS8SoyYm1odgRl/n23BJhfft3ukTyMPLXY8whyZILFyU= ; Message-ID: <20060419054623.74788.qmail@web30301.mail.mud.yahoo.com> Received: from [213.54.78.57] by web30301.mail.mud.yahoo.com via HTTP; Tue, 18 Apr 2006 22:46:23 PDT Date: Tue, 18 Apr 2006 22:46:23 -0700 (PDT) From: "R. B. Riddick" To: Erin E Conn , freebsd-multimedia@freebsd.org In-Reply-To: <44458366.7040102@nc.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Cc: Subject: Re: Rebooting problems with /dev/cxm0 X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Apr 2006 05:46:24 -0000 --- Erin E Conn wrote: > I do not think it is a resource issue, as the device works fine in > Windows using the provided WinTV software. Has anyone else experienced > similar issues with this card or any suggestions for remedying this problem? > I had a similar problem with my Pentium 133MHz: When I used "cat /dev/cxm0" and piped it via a NIC to another box, the pvr box halted without rebooting (at least for some minutes - then i pushed the reset button). Somehow it felt like the read requests from /dev/cxm0 must be issued quite often and regularily and the read requests from /dev/cxm0 should not be limited in size (1MB works fine, while 1 byte crashes almost immediately (e. g. "dd if=/dev/cxm0 of=/dev/null bs=1 count=1000"))... Furthermore the power saving features should be disabled in my box, I think (I did not test it thoroughly - at least whenever the power saving started the box crashed, when I read from /dev/cxm0 at that time)... :-) Since I split the reading from cxm0 and transfering to hard disc (partially via network) in two processes, that use 8 or about 8 buffers (each 2MB or about 2MB), I do not have this problem (61 days uptime... :-)) And each day at least 3h of reading from /dev/cxm0 - at most days much more: 6h or so). Maybe that helps (e. g.: just try to do "dd if=/dev/cxm0 of=/dev/null bs=1m count=1000"). Bye Arne __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com