From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:58577 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750915Ab2ESQuN (ORCPT ); Sat, 19 May 2012 12:50:13 -0400 Message-ID: <4FB7CF42.6010509@iki.fi> Date: Sat, 19 May 2012 19:50:10 +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>,<4FB444E2.4020908@iki.fi> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 19.05.2012 19:09, Per Wetterberg wrote: >>>> 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. > > Great! > I will be happy to test the solution. Is there a patch available? Yes there is: http://patchwork.linuxtv.org/patch/11310/ http://patchwork.linuxtv.org/patch/11311/ Antti -- http://palosaari.fi/