From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mout.gmx.net ([212.227.17.21]:57144 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753942Ab3G1Sfu (ORCPT ); Sun, 28 Jul 2013 14:35:50 -0400 Received: from [127.0.0.1] ([92.227.64.61]) by mail.gmx.com (mrgmx103) with ESMTPSA (Nemesis) id 0MUHbK-1UdYzG2yMk-00Qy6F for ; Sun, 28 Jul 2013 20:35:48 +0200 Message-ID: <51F56476.1090203@gmx.de> Date: Sun, 28 Jul 2013 20:35:34 +0200 From: Torsten Seyffarth MIME-Version: 1.0 To: Antti Palosaari CC: Jan Taegert , linux-media@vger.kernel.org, thomas.mair86@googlemail.com Subject: Re: PROBLEM: dvb-usb-rtl28xxu and Terratec Cinergy TStickRC (rev3) - no signal on some frequencies References: <51E927EC.5030701@gmx.net> <51E92A78.50706@iki.fi> <51E974DB.7010609@gmx.net> <51ED9F8F.10206@iki.fi> <51EFDF55.90500@iki.fi> In-Reply-To: <51EFDF55.90500@iki.fi> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hello Antti, Unfortunately the patch doesn't work for me either. Would it help you if I send you an usb sniff with wireshark of an program search run with kaffeine (27 MB)? regards Torsten Am 24.07.2013 16:06, schrieb Antti Palosaari: > Could you test attached patch? > > It enhances reception a little bit, you should be able to receive more > weak signals. > > I was able to made test setup against modulator. Modulator + > attenuator + attenuator + TV-stick, where I got picture using Windows > driver at signal level -29dBm whilst on Linux -26.5dBm was needed. > With that patch Linux driver started performing same as Windows. > > regards > Antti > > On 07/23/2013 12:09 AM, Antti Palosaari wrote: >> On 07/19/2013 08:18 PM, Jan Taegert wrote: >>> Hello, >>> >>> when the culprit is the e4000 driver but the old driver from >>> https://github.com/valtri/DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0 >>> >>> >>> worked for me, then must be somewhere there in the driver sources a >>> solution for the signal issues. >>> >>> Does it make sense to look for a particular string in the sources? I >>> don't have any clue of coding but perhaps I can be helpful in this way. >> >> Feel free to look. Those are different drivers and you cannot compare >> easily. For my experience you will need huge amount of time and much >> luck with that approach. >> >> As I said, the easiest solution is just to took sniffs and copy&paste >> generated code until it starts working. >> >> regards >> Antti >> >>> >>> There are >>> - tuner_e4000.c >>> - nim_rtl2832_e4000.c >>> >>> Thanks, >>> Jan. >>> >>> >>> >>> Am 19.07.2013 14:00, schrieb Antti Palosaari: >>>> Hello >>>> It is e4000 driver problem. Someone should take the look what there is >>>> wrong. Someone sent non-working stick for me, but I wasn't able to >>>> reproduce issue. I used modulator to generate signal with just same >>>> parameters he said non-working, but it worked for me. It looks like >>>> e4000 driver does not perform as well as it should. >>>> >>>> Maybe I should take Windows XP and Linux, use modulator to find out >>>> signal condition where Windows works but Linux not, took sniffs and >>>> compare registers... But I am busy and help is more than welcome. >>>> >>>> regards >>>> Antti >>> >> >> > >