[Pkg-alsa-devel] Bug#566241: alsa-base: Crackling and white noise sounds whenever an animation is played on graphical desktop

Daniel Gasser gasser at websource.ch
Fri Jan 22 11:38:58 UTC 2010


Package: alsa-base
Version: 1.0.21+dfsg-2
Severity: important

A crackling or white noise sound is present whenever an animation is shown 
on the screen. Animation is to be understood as animation in the widest sense.
Even on console, if the cursor is moved, a noise is audible. It also applies to 
mouse movements both on gnome or kde 4. 
I've tried disabling pulseaudio server, without any effect. The sound hardware 
is discovered correctly as nvidia mcp65 on board-sound. Before upgrading the system to debian squeeze, it was running debian etch without any sound 
issues. So i don't think it is a hardware related problem (like electrical 
field noise inside the box).

Although it seems related to the graphics system, i'm attaching the output 
of lspci | grep vga below:
02:00.0 VGA compatible controller: nVidia Corporation G73 [GeForce 7300 GT] (rev a1)

hal-device reports following information on video and audio devices:

88: udi = '/org/freedesktop/Hal/devices/pci_10de_393'
  pci.product = 'G73 [GeForce 7300 GT]'  (string)    
  pci.subsys_vendor = 'ASUSTeK Computer Inc.'  (string)
  linux.hotplug_type = 2  (0x2)  (int)                 
  linux.subsystem = 'pci'  (string)                    
  info.linux.driver = 'nvidia'  (string)               
  info.udi = '/org/freedesktop/Hal/devices/pci_10de_393'  (string)
  info.subsystem = 'pci'  (string)                                
  info.product = 'G73 [GeForce 7300 GT]'  (string)                
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:0d.0/0000:02:00.0'  (string)                                                                              
  info.parent = '/org/freedesktop/Hal/devices/pci_10de_458'  (string)           
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:0d.0/0000:02:00.0'  (string)                                                                          
  pci.product_id = 915  (0x393)  (int)                                          
  pci.vendor_id = 4318  (0x10de)  (int)                                         
  pci.subsys_product_id = 33294  (0x820e)  (int)                                
  pci.subsys_vendor_id = 4163  (0x1043)  (int)                                  
  pci.device_class = 3  (0x3)  (int)                                            
  pci.device_subclass = 0  (0x0)  (int)                                         
  pci.device_protocol = 0  (0x0)  (int)                                         
  pci.vendor = 'nVidia Corporation'  (string)                                   
  info.vendor = 'nVidia Corporation'  (string)                                  

102: udi = '/org/freedesktop/Hal/devices/pci_10de_44a'
  pci.product = 'MCP65 High Definition Audio'  (string)
  pci.subsys_vendor = 'Giga-byte Technology'  (string) 
  linux.hotplug_type = 2  (0x2)  (int)                 
  linux.subsystem = 'pci'  (string)                    
  info.linux.driver = 'HDA Intel'  (string)            
  info.udi = '/org/freedesktop/Hal/devices/pci_10de_44a'  (string)
  info.subsystem = 'pci'  (string)                                
  info.product = 'MCP65 High Definition Audio'  (string)          
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:07.0'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)    
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:07.0'  (string)
  pci.product_id = 1098  (0x44a)  (int)                                  
  pci.vendor_id = 4318  (0x10de)  (int)                                  
  pci.subsys_product_id = 40962  (0xa002)  (int)                         
  pci.subsys_vendor_id = 5208  (0x1458)  (int)                           
  pci.device_class = 4  (0x4)  (int)                                     
  pci.device_subclass = 3  (0x3)  (int)                                  
  pci.device_protocol = 0  (0x0)  (int)                                  
  pci.vendor = 'nVidia Corporation'  (string)                            
  info.vendor = 'nVidia Corporation'  (string)           

-- Package-specific info:
--- Begin additional package status ---
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  libasound2     1.0.21a-1      shared library for ALSA applications
--- End additional package status ---
--- Begin /proc/asound/version ---
Advanced Linux Sound Architecture Driver Version 1.0.20.
--- End /proc/asound/version ---
--- Begin /proc/asound/cards ---
 0 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xf5100000 irq 23
--- End /proc/asound/cards ---
--- Begin /dev/snd/ listing ---
total 0
drwxr-xr-x  2 root root       60 Jan 21 19:01 by-path
crw-rw----+ 1 root audio 116,  0 Jan 21 19:01 controlC0
crw-rw----+ 1 root audio 116,  4 Jan 21 19:01 hwC0D0
crw-rw----+ 1 root audio 116, 24 Jan 22 11:44 pcmC0D0c
crw-rw----+ 1 root audio 116, 16 Jan 22 12:04 pcmC0D0p
crw-rw----+ 1 root audio 116, 25 Jan 21 19:02 pcmC0D1c
crw-rw----+ 1 root audio 116, 17 Jan 21 19:02 pcmC0D1p
crw-rw----+ 1 root audio 116, 26 Jan 21 19:01 pcmC0D2c
crw-rw----+ 1 root audio 116,  1 Jan 21 19:01 seq
crw-rw----+ 1 root audio 116, 33 Jan 21 19:01 timer
--- End /dev/snd/ listing ---

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.30-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_CH.UTF-8, LC_CTYPE=de_CH.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages alsa-base depends on:
ii  linux-sound-base           1.0.21+dfsg-2 base package for ALSA and OSS soun
ii  lsof                       4.81.dfsg.1-1 List open files
ii  module-init-tools          3.11-1        tools for managing Linux kernel mo
ii  udev                       150-2         /dev/ and hotplug management daemo

Versions of packages alsa-base recommends:
ii  alsa-utils                    1.0.21-1   ALSA utilities

Versions of packages alsa-base suggests:
ii  alsa-oss                      1.0.17-3   ALSA wrapper for OSS applications
pn  apmd                          <none>     (no description available)
ii  oss-compat                    0.0.4+nmu3 OSS compatibility package

Versions of packages libasound2 depends on:
ii  libc6                         2.10.2-2   GNU C Library: Shared libraries

-- no debconf information





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