From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wm0-f44.google.com ([74.125.82.44]:35413 "EHLO mail-wm0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752842AbcAPXQ7 (ORCPT ); Sat, 16 Jan 2016 18:16:59 -0500 Received: by mail-wm0-f44.google.com with SMTP id r129so11535095wmr.0 for ; Sat, 16 Jan 2016 15:16:59 -0800 (PST) Subject: Re: Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts To: Rainer Dorsch , linux-media@vger.kernel.org References: <13463113.ozc26Vzdzi@blackbox> From: Andy Furniss Message-ID: <569ACF59.7090700@gmail.com> Date: Sat, 16 Jan 2016 23:16:41 +0000 MIME-Version: 1.0 In-Reply-To: <13463113.ozc26Vzdzi@blackbox> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Rainer Dorsch wrote: > Hi, > > I have a Pinnacle PCTV DVB-S2 Stick (461e) and did connect it to a > cubox-i running openelec. > > The known issues on > > http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29 > > seem to be gone (at least I did not hit them). > > Instead there seems to be another (new?) issue, that HD streams have > artefacts, see > > http://forum.kodi.tv/showthread.php?tid=220129 > > and > > https://tvheadend.org/boards/5/topics/19582?r=19584#message-19584 > > I tried to add that to the wiki, but my registration attempt was > rejected. > > Can somebody with write access to > http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29 > please add the new issue? > > Certainly any hint how to solve this issue is welcome. I added a comment on the tvh forum - will paste here as well in case anyone is interested - You could try spinning up you cpu(s) with nice -19 dd if=/dev/urandom of=/dev/null If you have multiple cores maybe start more than one. I have a couple of DVB-T2 PCTV sticks and got some usb/power save/xhci issues on my h/w. Above would mostly fix. Rather than do that I found that the issue was far less if I disabled USB3 in bios to avoid using the xhci driver. Of course your issue may be totally different - but it's worth a try. Your symptoms do point to ts packet loss - which I know from my experience can be at usb level. There are posts on here from the past where people with PCIE cards also had to do similar.