From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:60713 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760765Ab2EQAXA (ORCPT ); Wed, 16 May 2012 20:23:00 -0400 Message-ID: <4FB444E2.4020908@iki.fi> Date: Thu, 17 May 2012 03:22:58 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Per Wetterberg CC: linux-media@vger.kernel.org Subject: Re: PCTV 520e - DVB-C not working References: <4FA8260A.5070601@iki.fi> In-Reply-To: <4FA8260A.5070601@iki.fi> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 07.05.2012 22:44, Antti Palosaari wrote: > On 05.05.2012 15:24, Per Wetterberg wrote: >> >> Hi, >> >> >> I have problem getting the PCTV 520e to work with DVB-C on Linux. The >> video output stream is full of defects. >> "drxk: SCU_RESULT_INVPAR while sending cmd 0x0203 with params" is >> printed to the dmesg log when scanning and watching DVB-C channels. >> I have no problems scanning and watching DVB-T. >> >> >> On Windows 7, both DVB-T and DVB-C works fine. So I guess its not an >> hardware problem or the quality of the tv signal. >> >> >> I have tried the drivers that came with kernel 3.3.4 and the latest >> media drivers built from source. >> The dvb-demod-drxk-pctv.fw firmware file is downloaded with the >> get_dvb_firmware script and copied to /lib/firmware. >> >> >> I can't figure out what the problem is. >> Has anyone got PCTV 520e with DVB-C to work on Linux? >> >> >> I have attached some log outputs below. > > You will need attenuator. I suspect it is LNA or some AGC :/ But guess > what how many times I tried to found out the reason... Feel free to hack > DRX-K driver. Problem found. I was LNA which is always enabled. LNA is connected to the demod GPIO. I will disable it since it since it is now over gaining strong signals. regards Antti -- http://palosaari.fi/