From owner-freebsd-multimedia@FreeBSD.ORG Wed Jun 14 21:54:31 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 8A9D616A474 for ; Wed, 14 Jun 2006 21:54:31 +0000 (UTC) (envelope-from danny@ricin.com) Received: from smtpq3.tilbu1.nb.home.nl (smtpq3.tilbu1.nb.home.nl [213.51.146.202]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1F3AA43D46 for ; Wed, 14 Jun 2006 21:54:30 +0000 (GMT) (envelope-from danny@ricin.com) Received: from [213.51.146.190] (port=35693 helo=smtp1.tilbu1.nb.home.nl) by smtpq3.tilbu1.nb.home.nl with esmtp (Exim 4.30) id 1FqdJl-0006IM-AJ; Wed, 14 Jun 2006 23:54:29 +0200 Received: from cp464173-a.dbsch1.nb.home.nl ([84.27.221.74]:60572 helo=desktop.homenet) by smtp1.tilbu1.nb.home.nl with esmtp (Exim 4.30) id 1FqdJj-0005gh-UV; Wed, 14 Jun 2006 23:54:27 +0200 From: Danny Pansters To: freebsd-multimedia@freebsd.org Date: Wed, 14 Jun 2006 23:54:07 +0200 User-Agent: KMail/1.9.1 References: <200606112112.k5BLCCUI073021@amd64.ott.parse.com> <005701c68e93$086fd000$fe02a8c0@metroid> In-Reply-To: <005701c68e93$086fd000$fe02a8c0@metroid> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200606142354.07461.danny@ricin.com> X-AtHome-MailScanner-Information: Please contact support@home.nl for more information X-AtHome-MailScanner: Found to be clean Cc: Subject: Re: bktr problems (fwd) 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, 14 Jun 2006 21:54:31 -0000 On Tuesday 13 June 2006 04:42, Naram Qashat wrote: > On my other subject, what would be the reason why the ioctl for > TVTUNER_SETCHNL would cause the computer to reboot like that when FXTV > tries to use it? I remember that around the same time, I tried both XAWTV > and KBTV, but neither one showed video properly so I stopped using them, > FXTV is the only one that has worked so far as far as video is concerned. > > Naram SETCHNL and SETFREQ ultimately do the same thing, they issue a iic write command to the tuner (basically the frequency to tune to). Well, if the tuner isn't detected properly and failure of SETFOO (or the underlying iic write) isn't handled gracefully, there's a scenario where you can get a panic or lockup and its quite possible that all you get to see is a reboot (and perhaps your fans spinning up before that). So I think it's likely that this is not another subject but rather it is a result from the tuner not working (or somewhat but not correct) with the driver in the first place. I have to say though, that whenever I saw lockups/reboots while (ab)using bktr they were framebuffer/memory related rather than tuner related AFAICT. (kbtv uses SETFREQ BTW, it doesn't use channelsets at all, dunno what xawtv does) Dan