From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0000384]: Crackly PCM output. Date: Mon, 3 Jan 2005 13:48:46 +0100 Message-ID: <4bb9896f075e3c5c3dc3d89aaf461373@bugtrack.alsa-project.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from bugtrack.alsa-project.org (gate.perex.cz [82.113.61.162]) by alsa.alsa-project.org (ALSA's E-mail Delivery System) with ESMTP id 5CD2D2CE for ; Mon, 3 Jan 2005 13:48:47 +0100 (MET) Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org A NOTE has been added to this issue. ====================================================================== ====================================================================== Reported By: bryanb Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 384 Category: PCI - ymfpci Reproducibility: always Severity: major Priority: normal Status: new Distribution: Gentoo dev sources Kernel Version: 2.6 ====================================================================== Date Submitted: 07-13-2004 19:28 CEST Last Modified: 01-03-2005 13:48 CET ====================================================================== Summary: Crackly PCM output. Description: When playing a sound through the speakers on Toshiba Tecra 8100 the only sound produced is noise. ====================================================================== ---------------------------------------------------------------------- tiwai - 12-20-04 17:42 ---------------------------------------------------------------------- A test patch is attached. ---------------------------------------------------------------------- wallsga - 01-03-05 13:48 ---------------------------------------------------------------------- Neither "ac97-default-rate-fix.diff" nor "ymfpci-novra.diff" solved the problem. Testing using the /proc interface with "tecra8100demo.patch" in place revealed: - turing VRA on & off without changing the rate did not induce the problem - turning on VRA and changing the rate in register 0x2c away from 48 Khz and then back to 48 KHz always induced the problem (except in one trial) - trying to set the rate back to 48 Khz and/or turning off VRA does not make the problem go away, once induced I conclude that simply changing the rate induces the problem. Once induced the problem cannot be reversed except via chipset reset. To date it appears that the only solution for this laptop is to prevent VRA rate changes altogether (including the probe). I'd be happy with an ac97_codec module option to prevent VRA rate probes and enables. I wanted to test more, like not allowing the modem rate register (0x32?) to change, since I don't think it's a valid register for this chip, and then see if VRA works. But honestly, I don't have the time. Issue History Date Modified Username Field Change ====================================================================== 07-13-04 19:28 bryanb New Issue 07-13-04 19:28 bryanb Distribution => Gentoo dev sources 07-13-04 19:28 bryanb Kernel Version => 2.6 07-29-04 22:43 codefathers Note Added: 0001485 07-29-04 22:45 codefathers Issue Monitored: codefathers 09-03-04 03:37 Derek_Burdick Issue Monitored: Derek_Burdick 09-03-04 03:40 Derek_Burdick Note Added: 0001684 10-23-04 23:24 c0ldevil Note Added: 0002257 10-23-04 23:27 c0ldevil Note Edited: 0002257 10-23-04 23:55 c0ldevil Note Added: 0002259 10-23-04 23:56 c0ldevil Note Added: 0002260 11-10-04 12:48 tiwai Note Added: 0002369 11-17-04 18:14 c0ldevil Note Added: 0002436 11-17-04 20:33 c0ldevil Note Added: 0002442 11-17-04 20:39 rlrevell Note Added: 0002443 11-18-04 14:30 tiwai Note Added: 0002445 11-18-04 15:46 c0ldevil Note Added: 0002446 11-18-04 15:56 c0ldevil Note Added: 0002447 11-18-04 15:59 c0ldevil File Added: dumps.zip 11-18-04 16:00 c0ldevil Note Added: 0002448 11-18-04 19:44 tiwai Note Added: 0002465 11-18-04 21:05 c0ldevil Note Added: 0002471 11-18-04 21:29 c0ldevil Note Edited: 0002471 11-22-04 14:24 wallsga Note Added: 0002496 11-22-04 14:26 wallsga Note Edited: 0002496 11-22-04 14:30 wallsga Issue Monitored: wallsga 11-22-04 14:37 tiwai Note Added: 0002498 11-23-04 16:14 wallsga File Added: tecra8100-bug-data.tar.gz 11-23-04 16:15 wallsga Note Added: 0002520 12-16-04 22:44 wallsga Note Added: 0002843 12-20-04 16:08 wallsga Note Added: 0002883 12-20-04 16:10 wallsga File Added: tecra8100demo.patch 12-20-04 16:11 wallsga File Added: codec-init-seq.tar.gz 12-20-04 16:59 tiwai Note Added: 0002887 12-20-04 17:00 tiwai File Added: ac97-default-rate-fix.diff 12-20-04 17:25 wallsga Note Added: 0002888 12-20-04 17:27 wallsga Note Edited: 0002888 12-20-04 17:37 tiwai Note Added: 0002890 12-20-04 17:42 tiwai Note Added: 0002892 12-20-04 17:43 tiwai File Added: ymfpci-novra.diff 12-30-04 23:25 c0ldevil Issue Monitored: c0ldevil 01-03-05 13:48 wallsga Note Added: 0003059 ====================================================================== ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. 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