From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.work.de ([212.12.32.20]:51297 "EHLO mail.work.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751330AbZDMX5q (ORCPT ); Mon, 13 Apr 2009 19:57:46 -0400 Message-ID: <49E3D16E.3070307@gmail.com> Date: Tue, 14 Apr 2009 03:57:34 +0400 From: Manu Abraham MIME-Version: 1.0 To: Dave Lister CC: VDR User , linux-media@vger.kernel.org, linux-dvb@linuxtv.org Subject: Re: [linux-dvb] SkyStar HD2 issues, signal sensitivity, etc. References: <621110570904131518w220106d7u67934966dbb8c7dd@mail.gmail.com> In-Reply-To: <621110570904131518w220106d7u67934966dbb8c7dd@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Dave Lister wrote: > 2009/4/12 VDR User : >> On Sat, Apr 11, 2009 at 5:47 AM, Dave Lister wrote: >>> 2009/4/11 VDR User : >>>> There is a new mantis tree being uploaded at: >>>> http://jusst.de/hg/mantis-v4l >>>> >>>> Please try this tree. The upload should finish within 2 hours and is >>>> using DVB api 5 (aka s2api). >>> RESULTS (using "s2" dvb-apps): >>> - scanning DVB-S works >>> - scanning DVB-S2 doesn't work >>> - zapping DVB-S is fast >>> >> Can you please try a fresh clone of the tree? I believe the fixes >> have now been applied. Thanks! >> > > Ok, I did and it seems fine. I mean for a Linux DVB-S2 card. :) > Compared to liplianin driver, only minus is non-working DiSEqC. > Because I am using a multiswitch, I had to switch to liplianin. I am > sorry, but I'm definitely keeping an eye on your driver as well and > will be testing it as it gets updated! > > For other SkyStar HD2 users, this is a summary as of 2009.04.14: > - kernel 2.6.29 + mantis-v4l works (except DiSEqC as far as I can tell) Diseqc works fine over here, with the VP-1041 and other cards, using the mantis-v4l tree. > - kernel 2.6.29 + s2-liplianin works just as reliably + DiSEqC The s2-liplianin tree doesn't use an updated tree for the mantis based devices unfortunately. It is stuck with older changesets of the mantis tree. The s2-liplianin tree contains (ed) ? some clock related changes which were not favourable for the STB0899 demodulator, which is capable of causing potential hardware damage. > Common issues: > - zapping DVB-S2 channel causes tuner HW lockup (loss of signal until reboot) > - zap DVB-S2 channel => AWFUL ultra-high pitched noise emitted from > the card (capacitors or coils?) - makes your head hurt in about 30mins > - very poor TS (picture data) quality; signal = 95%, SNR = 70%, > STB/TV gives superb picture, but SkyStar/PC picture is corrupted every > few seconds, sound glitches, etc. (as if the signal was like 40% on > STB) - confirmed in VDR (Xine), MythTV, mplayer. > > These issues are present with both of my two SkyStar cards, which > hopefully eliminates faulty HW. To be frank, The cards what i have don't have the issues whatsoever you mention. There could be multiple causes, since the cards that i have don't have the troubles whatsoever you mention. * If you had those changes on your hardware and your card was susceptible to such issues, then that could be a possible reason. * There are quite some hardware pirates, as noted here .. In any of your cases, If you have hardware related issues please contact to your supplier to have it checked/replaced by them. NOTE: Always try to stick with a tree that's a mainline tree or the development tree, rather than tree's with unknown changes. Regards, Manu