From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from claranet-outbound-smtp06.uk.clara.net ([195.8.89.39]:33384 "EHLO claranet-outbound-smtp06.uk.clara.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756221AbZJNLCg (ORCPT ); Wed, 14 Oct 2009 07:02:36 -0400 Message-ID: <4AD5AFA6.8080401@onelan.com> Date: Wed, 14 Oct 2009 12:01:58 +0100 From: Simon Farnsworth MIME-Version: 1.0 To: Andy Walls CC: linux-media@vger.kernel.org Subject: Re: Poor reception with Hauppauge HVR-1600 on a ClearQAM cable feed References: <4AD591BB.80607@onelan.com> <1255516547.3848.10.camel@palomino.walls.org> In-Reply-To: <1255516547.3848.10.camel@palomino.walls.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Andy Walls wrote: > Have your remote user read > > http://www.ivtvdriver.org/index.php/Howto:Improve_signal_quality > > and take any actions that seem appropriate/easy. > I'll try that again - they're grouching, because their TV is fine, and the same card in a Windows PC is also fine. It's just under Linux that they're seeing problems, so I may not be able to get them to co-operate. > > The in kernel mxl5005s driver is known to have about 3 dB worse > performance for QAM vs 8-VSB (Steven Toth took some measurements once). > Am I misunderstanding dmesg here? I see references to a Samsung S5H1409, not to an mxl5005s; if I've read the driver code correctly, I'd see a KERN_INFO printk for the mxl5005s when it comes up. -- Simon Farnsworth