From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001440]: headphone output loops to microphone input Date: Sat, 31 Dec 2005 03:20:54 +0100 Message-ID: <554360ec8bc5d4d81ed30b0ce0faba8f@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 [85.132.177.35]) by alsa.jcu.cz (ALSA's E-mail Delivery System) with ESMTP id 783FF121 for ; Sat, 31 Dec 2005 03:20:54 +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: dyfrgi Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1440 Category: PCI - intel8x0 Reproducibility: always Severity: major Priority: normal Status: new Distribution: Gentoo Kernel Version: 2.6.13.1 ====================================================================== Date Submitted: 09-22-2005 00:13 CEST Last Modified: 12-31-2005 03:20 CET ====================================================================== Summary: headphone output loops to microphone input Description: I cannot use the headphone port when using full duplex on my laptop. Here are four scenarios, and the results: 1. System speakers, no microphone plugged in RESULTS: When recording from the microphone input, there is no sound. As expected. 2. System speakers, microphone plugged in RESULTS: Only the sound that should be picked up by the microphone is recorded through the microphone input. As expected. 3. Headphones plugged in, microphone not plugged in. RESULTS: No sound when recording. As expected. 4. Headphones plugged in, microphone plugged in. RESULTS: Audio coming in through the microphone input is a combination of the expected audio and the audio that is being played through the headphone output. This is the problem. Could this be an ALSA issue, or should I have the laptop hardware looked at? I should note that this also happens if I use the OSS driver. That doesn't mean it's not a driver issue, though; it could be that some register is not being set up properly. The loopbacked volume is lower than if I set Mix or Mix Mono to be the capture channel. I'm using jaaa with noise output turned on to monitor. ====================================================================== ---------------------------------------------------------------------- rlrevell - 12-31-05 03:20 ---------------------------------------------------------------------- Any improvement with later ALSA releases? Issue History Date Modified Username Field Change ====================================================================== 09-22-05 00:13 dyfrgi New Issue 09-22-05 00:13 dyfrgi Distribution => Gentoo 09-22-05 00:13 dyfrgi Kernel Version => 2.6.13.1 12-31-05 03:20 rlrevell Note Added: 0007324 ====================================================================== ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click