From owner-freebsd-ppc@FreeBSD.ORG Sat Nov 8 05:00:06 2008 Return-Path: Delivered-To: freebsd-ppc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D8065106568D; Sat, 8 Nov 2008 05:00:06 +0000 (UTC) (envelope-from jrh29@alumni.cwru.edu) Received: from beta.eecs.cwru.edu (beta.EECS.CWRU.Edu [129.22.150.110]) by mx1.freebsd.org (Postfix) with ESMTP id 211E08FC16; Sat, 8 Nov 2008 05:00:04 +0000 (UTC) (envelope-from jrh29@alumni.cwru.edu) Received: from narn.knownspace ([::ffff:69.140.221.138]) (AUTH: PLAIN jrh29, TLS: TLSv1/SSLv3,168bits,DES-CBC3-SHA) by beta.eecs.cwru.edu with esmtp; Sat, 08 Nov 2008 00:00:03 -0500 id 0000446A.49151CD3.00004417 Date: Fri, 7 Nov 2008 23:59:59 -0500 From: Justin Hibbits To: Peter Grehan Message-ID: <20081108045959.GA1157@narn.knownspace> References: <20081022050101.EKN14563@dommail.onthenet.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <20081022050101.EKN14563@dommail.onthenet.com.au> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-ppc@freebsd.org Subject: Re: graphics on G4 X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Nov 2008 05:00:07 -0000 On Wed, Oct 22, 2008 at 05:01:01AM +1000, Peter Grehan wrote: > That sounds like a good place to start. For the case when the > program mmap's the video, does it write to all the pages ? One > thing to try would be to write a known value to screen memory > e.g. 0xdeadcode, and on exit see if that triggers a panic > rather than a hang. > > later, > > Peter. At long last I've reproduced the hang. I did write 0xdeadc0de to the framebuffer memory, but no panic, just a hang. At least, it seems to have been just a hang, as there was no panic trace displayed, everything just stopped. - Justin