From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m2J4LUvk021756 for ; Wed, 19 Mar 2008 00:21:30 -0400 Received: from host06.hostingexpert.com (host06.hostingexpert.com [216.80.70.60]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m2J4Kuvr014931 for ; Wed, 19 Mar 2008 00:20:56 -0400 Message-ID: <47E094A6.8030205@linuxtv.org> Date: Wed, 19 Mar 2008 00:20:54 -0400 From: Michael Krufky MIME-Version: 1.0 To: Hartmut Hackmann References: <47E060EB.5040207@t-online.de> <37219a840803181754n5935b4e8g37dc77dd605b3095@mail.gmail.com> <47E06D5C.3070109@t-online.de> In-Reply-To: <47E06D5C.3070109@t-online.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Linux and Kernel Video , LInux DVB Subject: Re: [linux-dvb] [RFC] TDA8290 / TDA827X with LNA: testers wanted List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: Hello Hartmut, Hartmut Hackmann wrote: > Michael Krufky schrieb: >> I have an HVR1110, and I have a QAM64 generator that I use to test it. >> Obviously, it is a hot signal. Is it possible for me to test the LNA >> under these circumstances? ...or do we need somebody "out in the >> field" to do that sort of test? (I live in ATSC-land ;-) ) >> > You should be able to. You need to have the debug option for the tuner on > and you need to be aware that the decicion LNA on / off is taken only once > while tuning. When you modify the RF level you should notice that increasing > the amplitude results in a lower AGC2 value. When it reaches the value 2, the > driver should report that it turns the LNA to low gain. You will also need to > monitor the AGC value of the channel decoder to see the effect. I'll give this a try when I have some time, and send you the logs. >> You mentioned a possible kernel OOPS. Have you actually experienced >> an OOPS with the current tree? I apologize if this feature being >> broken is the result of my tuner refactoring. I appreciate your >> taking the time to fix it. >> > Yes. The first parameter to the tuner callback was wrong and cause a reference > to a NULL pointer. Ah, I believe this may have been caused by a very recent changeset: http://linuxtv.org/hg/v4l-dvb/rev/ad6fb7fe6240 I tested all of my changes thoroughly, and had received positive test results from other users with various hardware. The regression was not part of my tuner refactoring changes, and I do not think that this is upstream in 2.6.25-rc. Can you confirm whether or not the above is the problem changeset? Regards, Mike -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list