From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.user/17444 Path: news.gmane.org!not-for-mail From: Haines Brown Newsgroups: gmane.emacs.gnus.user Subject: sound distortion Date: Sun, 15 Feb 2015 14:59:30 -0500 Message-ID: <87sie7rlnh.fsf@engels.histomat.net> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1424030408 24458 80.91.229.3 (15 Feb 2015 20:00:08 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 15 Feb 2015 20:00:08 +0000 (UTC) To: info-gnus-english@gnu.org Original-X-From: info-gnus-english-bounces+gegu-info-gnus-english=m.gmane.org@gnu.org Sun Feb 15 21:00:08 2015 Return-path: Envelope-to: gegu-info-gnus-english@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YN5MM-00055U-KR for gegu-info-gnus-english@m.gmane.org; Sun, 15 Feb 2015 21:00:06 +0100 Original-Received: from localhost ([::1]:36440 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YN5MM-000135-00 for gegu-info-gnus-english@m.gmane.org; Sun, 15 Feb 2015 15:00:06 -0500 Original-Path: usenet.stanford.edu!news.glorb.com!Xl.tags.giganews.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!news.giganews.com.POSTED!not-for-mail Original-NNTP-Posting-Date: Sun, 15 Feb 2015 13:59:30 -0600 Original-Newsgroups: gnu.emacs.gnus User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Cancel-Lock: sha1:IFqvyNlspHjqZgbcWsvrCbJVMsA= Original-Lines: 103 X-Usenet-Provider: http://www.giganews.com Original-X-Trace: sv3-U006RCodyL/1+ZuiwQKIeRGruviDUIO/F9i7tNRDykGeQEfiyFSO7qLhiMvhRU6Lu1opIoXazgYbDve!y3xk7lpPjM2yfMCLX+nDbxrI+5I86p7pPIvprDD+ZlXrOfrzSYaS18e18n+9VQ== Original-X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 4952 Original-Xref: usenet.stanford.edu gnu.emacs.gnus:88573 X-BeenThere: info-gnus-english@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Announcements and discussions for GNUS, the GNU Emacs Usenet newsreader \(in English\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: info-gnus-english-bounces+gegu-info-gnus-english=m.gmane.org@gnu.org Original-Sender: info-gnus-english-bounces+gegu-info-gnus-english=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.gnus.user:17444 Archived-At: I installed on Debian Wheezy (3.2.0-4-686-pae #1 SMP Debian 3.2.65-1 i686 GNU/Linux) an Asus Xonar DS PCI Express 7.1. It played beautifully out of the box, but next day it played with much distortion. I believe the only thing I did after the initial success was to remove a line in /etc/modprobe.d/alsa/alsa-base.config with which I tried to correct an old card priority problem. Sound is hopeless distorted. When I play a CD disk with alsaplayer the sound stutters: sometimes sound amplitude seems modulated by a sinewave at about 8Hz/sec and sometimes it stutters or is silent. What I find significant is that when alsaplayer is stopped, the stuttering continues for a second or two longer. Does this suggest feedback? When I play a .wav file with aplay, the sound is a screech. I installed pulseaudio and it produced no sound at all and so removed it. Nevertheless pulse shows up: $ aplay -L null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default:CARD=DX Xonar DX, Multichannel Default Audio Device sysdefault:CARD=DX Xonar DX, Multichannel Default Audio Device front:CARD=DX,DEV=0 Xonar DX, Multichannel Front speakers ... The driver for the card is snd_virtuoso: # lspci -v 06:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 \ [Oxygen HD Audio] Subsystem: ASUSTeK Computer Inc. Virtuoso 100 (Xonar DX) Flags: bus master, medium devsel, latency 32, IRQ 19 I/O ports at d000 [size=256] Capabilities: Kernel driver in use: snd_virtuoso Nothing about the card or driver loading is reported by $ dmesg. This perhaps because its earlier portion was overwritten by subsequent garbage, multiple repititions of: sr 4:0:0:0: [sr0] Sense Key : Illegal Request [current] ILI sr 4:0:0:0: [sr0] Add. Sense: Illegal mode for this track sr 4:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 end_request: I/O error, dev sr0, sector 0 sr 4:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE However, that garbage ended and for a day I've not seen any more of it. So in place of dmesg I turn to /var/log/boot. A | grep snd returns: Thu Feb 12 14:23:18 2015: Loading kernel module snd-ctxfi. This is strange. Last week I tried to install an Audigi X-Fi Titanium before I relized it is not supported by Debian. This snd-ctxfi sounds like its module is loaded for some reason. # lsmod ... snd_ctxfi 62598 0 ... snd_hda_codec_hdmi 26352 1 snd_virtuoso 33765 2 snd_oxygen_lib 27905 1 snd_virtuoso snd_mpu401_uart 13299 1 snd_oxygen_lib snd_usb_audio 71436 0 snd_usbmidi_lib 18801 1 snd_usb_audio snd_seq_midi 12744 0 snd_seq_midi_event 13124 1 snd_seq_midi snd_rawmidi 22472 3 \ snd_seq_midi,snd_usbmidi_lib,snd_mpu401_uart ... snd_hda_intel 21786 1 snd_hda_codec 63477 2 snd_hda_intel,snd_hda_codec_hdmi ... snd_hwdep 12943 2 snd_hda_codec,snd_usb_audio snd_pcm 53461 7 \ snd_hda_codec,snd_hda_intel,snd_usb_audio,\ snd_oxygen_lib,snd_hda_codec_hdmi,snd_ctxfi ... snd_page_alloc 12867 3 snd_pcm,snd_hda_intel,snd_ctxfi ... snd_seq 39512 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 13016 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer ... snd 42761 19 snd_timer,snd_seq_device,snd_seq,snd_pcm,snd_hwdep,snd_hda_codec,\ snd_hda_intel,snd_rawmidi,snd_usbmidi_lib,snd_usb_audio, \ snd_mpu401_uart,snd_oxygen_lib,snd_virtuoso,snd_hda_codec_hdmi,\ snd_ctxfi Don't know if this could be a problem, so unloaded it and restarted alsa-utils. That had no effect on the problem.