From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9620CC54FD0 for ; Thu, 23 Apr 2020 15:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74C762076C for ; Thu, 23 Apr 2020 15:35:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729325AbgDWPfH (ORCPT ); Thu, 23 Apr 2020 11:35:07 -0400 Received: from gofer.mess.org ([88.97.38.141]:45857 "EHLO gofer.mess.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729176AbgDWPfG (ORCPT ); Thu, 23 Apr 2020 11:35:06 -0400 Received: by gofer.mess.org (Postfix, from userid 1000) id 6D85DC637F; Thu, 23 Apr 2020 16:35:05 +0100 (BST) Date: Thu, 23 Apr 2020 16:35:05 +0100 From: Sean Young To: Rolf Pedersen Cc: Linux Media Mailing List Subject: Re: HauppaugeTV-quadHD DVB-T mpeg risc op code error Message-ID: <20200423153505.GA22057@gofer.mess.org> References: <0c0ab661-17bb-231a-7311-c35d8d0435c0@mindspring.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <0c0ab661-17bb-231a-7311-c35d8d0435c0@mindspring.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi, On Thu, Apr 23, 2020 at 05:32:32AM -0700, Rolf Pedersen wrote: > Hi Folks, > I just subscribed after having trouble with this card that worked for 3 > years on Skylake i5-6500 but stopped tuning when I moved it to AMD Ryzen 5 > 3400G machine.  I found the workaround in the archived thread referenced in > the subject line and don't know any way to reply directly to it: > https://www.spinics.net/lists/linux-media/msg114563.html > > My card is ATSC as on this page: > https://www.kernel.org/doc/html/v4.10/media/v4l-drivers/cx23885-cardlist.html > 57     Hauppauge WinTV-QuadHD-ATSC     0070:6a18, 0070:6b18 > > and > > [rolf@x570i coup]$ lspcidrake -v | grep Conexant > cx23885         : Conexant Systems, Inc.|CX23887/8 PCIe Broadcast Audio and > Video Decoder with 3D Comb [MULTIMEDIA_VIDEO] (vendor:14f1 device:8880 > subv:0070 subd:6b18) (rev: 04) > cx23885         : Conexant Systems, Inc.|CX23887/8 PCIe Broadcast Audio and > Video Decoder with 3D Comb [MULTIMEDIA_VIDEO] (vendor:14f1 device:8880 > subv:0070 subd:6a18) (rev: 04) > > Neither scan, dvbscan, nor w_scan2, nor Kaffeine TV, while finding working > frequencies, could divulge any services.  The workaround was in the > referenced post:  cx23885.debug=8 > > I've seen another report of a different kernel option that worked on Ryzen: > |cx23885.dma_reset_workaround=2 here: > https://www.dslreports.com/forum/r32639318-SFF-3400G-build#32640298 > > Ok.  Just wanted to join the chorus with a *metoo* in case I can provide > some (guided) forensics. So there is a commit for a related issue: https://git.linuxtv.org/media_tree.git/commit/?id=4bd46aa0353e022c2401a258e93b107880a66533 That is kernel v5.0 and higher. So: 1. What kernel are you using? 2. What is the full lspci -n of your machine? Thanks, Sean