From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from rv-out-0506.google.com ([209.85.198.224]:51263 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753716AbZBSPIQ convert rfc822-to-8bit (ORCPT ); Thu, 19 Feb 2009 10:08:16 -0500 Received: by rv-out-0506.google.com with SMTP id g37so451530rvb.1 for ; Thu, 19 Feb 2009 07:08:14 -0800 (PST) From: Andreas To: CityK Subject: Re: PVR x50 corrupts ATSC 115 streams Date: Thu, 19 Feb 2009 05:30:08 -0800 Cc: linux-media@vger.kernel.org References: <200902180441.40316.linuxdreas@dslextreme.com> <499CD3F3.9010803@rogers.com> In-Reply-To: <499CD3F3.9010803@rogers.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200902190530.08328.linuxdreas@dslextreme.com> Sender: linux-media-owner@vger.kernel.org List-ID: Am Mittwoch, 18. Februar 2009 19:37:23 schrieb CityK: > > It should be noted that a common element here in the two cases is the > Nxt2004 (demod for both the A180 and 11x cards). Yes, that's right. After testing different configurations, I believe that the problem with corrupted QAM recordings has more than one source: * A driver problem (ivtv, maybe also nxt2004) * Mainboards which are "dma-challenged" (one of mine definitely has probs in that department) * RF interference / general reception problems. At the end of the day, it comes down to lots of testing and a bit of luck to find a combination of cards & mainboards which work nicely together. -- Gruß Andreas