From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001658]: Capture happens only on one channel Date: Sat, 7 Jan 2006 06:24:59 +0100 Message-ID: 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 38626139 for ; Sat, 7 Jan 2006 06:25:00 +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: phil_troin Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1658 Category: PCI - intel8x0 Reproducibility: always Severity: minor Priority: normal Status: new Distribution: Gentoo Kernel Version: 2.6.14-gentoo-r2 ====================================================================== Date Submitted: 12-18-2005 08:40 CET Last Modified: 01-07-2006 06:24 CET ====================================================================== Summary: Capture happens only on one channel Description: When I am playing a CD, if I capture the sound output via the capture channel OR the CD channel (amixer output attached), the captured sound is only one one channel (the right one) and is very distorted. The audio plays normally in stereo on the speakers. ====================================================================== ---------------------------------------------------------------------- linuxbear - 12-18-05 12:02 ---------------------------------------------------------------------- I have the same issue. My kernel is 2.6.14 with Con Kolivas ck5 patch. nForce motherboard with intel8x0.... does not work, capture happens on one channel... tried every mixer setting. 00:06.0 Multimedia audio controller: nVidia Corporation nForce2 AC97 Audio Controler (MCP) (rev a1) Subsystem: Biostar Microtech Int'l Corp: Unknown device 8201 Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 5 I/O ports at d400 [size=256] I/O ports at d800 [size=128] Memory at e0001000 (32-bit, non-prefetchable) [size=4K] Capabilities: [44] Power Management version 2 ---------------------------------------------------------------------- tgutwin - 01-07-06 06:24 ---------------------------------------------------------------------- Same issue here, plus a few others on the MythTV user list have the same symptoms after kernel and/or ALSA dirver updates. Playback works fine Capture only gets one channel (Left). I can monitor the 2ch audio fine but when it gets recorded through Myth (or LiveTV which is also a capture and record process) it loses its right channel of audio with plain old analog 2 channel output. NO digital AC3 used here (yet) I have gone through the alsa setup with a fine tooth comb. it looks correct. plus all audio and video apps outside of MythTV play back work correctly. I have tried every mute/capture setting using a couple of different mixers. The problem persists. My system is a freshly built system specifically to be a home for >> AMD X2 >> Asus A8N-e with onboard nvidia CK804/intel8x0 >> Fedora core 4 built for x86_64 >> with smp kernel 2.6.14-1.1653_FC4 >> Alsa Version 1.0.10rc3 for kernel 2.6.14-1.1653_FC4smp (SMP) From atrpms [root@dvr dev]# cd /proc [root@dvr proc]# cd asound [root@dvr asound]# ls card0 cards CK804 devices hwdep modules oss pcm seq timers version [root@dvr asound]# cat version Advanced Linux Sound Architecture Driver Version 1.0.10rc3. Compiled on Dec 14 2005 for kernel 2.6.14-1.1653_FC4smp (SMP). [root@dvr asound]# cat cards 0 [CK804 ]: NFORCE - NVidia CK804 NVidia CK804 with ALC850 at 0xc8103000, irq 50 lsmod | grep snd snd_usb_audio 92160 0 snd_usb_lib 21504 1 snd_usb_audio snd_rawmidi 32544 1 snd_usb_lib snd_hwdep 14624 1 snd_usb_audio snd_intel8x0 39848 1 snd_ac97_codec 115516 1 snd_intel8x0 snd_ac97_bus 6784 1 snd_ac97_codec snd_seq_dummy 8068 0 snd_seq_oss 42596 0 snd_seq_midi_event 12672 1 snd_seq_oss snd_seq 67288 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_seq_device 14224 4 snd_rawmidi,snd_seq_dummy,snd_seq_oss,snd_seq snd_pcm_oss 61984 0 snd_mixer_oss 22656 2 snd_pcm_oss snd_pcm 106888 4 snd_usb_audio,snd_intel8x0,snd_ac97_codec,snd_pcm_oss snd_timer 30344 2 snd_seq,snd_pcm snd 69088 15 snd_usb_audio,snd_usb_lib,snd_rawmidi,snd_hwdep,snd_intel8x0,snd_ac97_codec,snd_seq_dummy,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer soundcore 16353 2 snd snd_page_alloc 15376 2 snd_intel8x0,snd_pcm There are other users that have reported the same issue. What other debugging can I do? I can send in amixer scontents, but I have enumerated all options. Issue History Date Modified Username Field Change ====================================================================== 12-18-05 08:40 phil_troin New Issue 12-18-05 08:40 phil_troin File Added: amixout 12-18-05 08:40 phil_troin Distribution => Gentoo 12-18-05 08:40 phil_troin Kernel Version => 2.6.14-gentoo-r2 12-18-05 12:00 linuxbear Note Added: 0007071 12-18-05 12:02 linuxbear Note Edited: 0007071 12-27-05 10:34 linuxbear Issue Monitored: linuxbear 01-07-06 06:24 tgutwin Note Added: 0007508 ====================================================================== ------------------------------------------------------- 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