From owner-freebsd-multimedia Sun Apr 11 16:56:30 1999 Delivered-To: freebsd-multimedia@freebsd.org Received: from pluto.ipass.net (pluto.ipass.net [198.79.53.5]) by hub.freebsd.org (Postfix) with ESMTP id 0B55014C80 for ; Sun, 11 Apr 1999 16:56:27 -0700 (PDT) (envelope-from rhh@ipass.net) Received: from stealth.ipass.net. (ts10-33-ppp.ipass.net [208.209.104.33]) by pluto.ipass.net (8.9.1a/8.9.1) with ESMTP id TAA16048; Sun, 11 Apr 1999 19:54:06 -0400 (EDT) Received: (from rhh@localhost) by stealth.ipass.net. (8.9.1/8.8.8) id TAA14102; Sun, 11 Apr 1999 19:54:14 -0400 (EDT) (envelope-from rhh) Date: Sun, 11 Apr 1999 19:54:14 -0400 From: Randall Hopper To: Roger Hardiman Cc: multimedia@FreeBSD.ORG Subject: Re: Bt848 corruption since upgrading to 3.1. Has DMA code changed? Message-ID: <19990411195414.A13809@ipass.net> References: <370CB2DC.709E7CEA@cs.strath.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.1i In-Reply-To: <370CB2DC.709E7CEA@cs.strath.ac.uk>; from Roger Hardiman on Thu, Apr 08, 1999 at 02:45:00PM +0100 Sender: owner-freebsd-multimedia@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Roger Hardiman: |Several people (including Luigi) have reported that video capture with |the bt848 driver is not working right since they upgraded from 2.2.6 or |2.2.8 to 3.1-release ... |Does anyone know what is different in the 3.x kernel (compared to the |2.2.x kernel) which could be causing this corruption. Just as a datapoint, I've run 3.0-971208-SNAP and (for many months now) 3.0-RELEASE with the installed and more recent bt848 drivers (currently v1.57) with no problems. ASUS P55T2P4, STB Velocity 3D 4Meg, Hauppauge Wincast TV/dbx. It would be an interesting datapoint to heard whether those seeing corruption don't see it when doing PCI-to-mem transfers rather than the default PCI-to-PCI (that is, try "fxtv -disableDirectV"). (I also wonder if there's some relation between motherboard, MB chipsets, or video cards for those seeing corruption.) Randall To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message