error mosssages referring to alsa.

[peter@easthope.ca]

I have Squeeze installed on an IBM ThinkPad A22m.
The /etc/apt/sources.list and hwinfo --sound follow.

alsamixergui yields this message.
alsamixer: function snd_ctl_open failed for 
  default: no such file or directory. 

VLC gives this message.
Please update alsa-lib to version 1.0.23-2-g8d80d5f or higher.

Is this a bug in a sound driver?  Is it an 
inconsistency involving backports?  Other ideas?

Thanks,             ... Peter E.

==========================

peter@whiterock:~$ cat  /etc/apt/sources.list
#deb cdrom:[Debian GNU/Linux 6.0.0 _Squeeze_ - Official i386 NETINST Binary-1 20
110205-14:34]/ squeeze main

# mirror.cpsc.ucalgary.ca = 136.159.12.11
deb http://136.159.12.11/mirror/debian.org/debian/ squeeze main contrib non-free
# deb-src http://mirror.cpsc.ucalgary.ca/mirror/debian.org/debian/ squeeze main

deb http://www.deb-multimedia.org squeeze main non-free

deb http://backports.debian.org/debian-backports squeeze-backports main
deb http://mozilla.debian.net/ squeeze-backports iceweasel-release

deb http://security.debian.org/ squeeze/updates main contrib non-free
deb-src http://security.debian.org/ squeeze/updates main

deb http://mirror.cpsc.ucalgary.ca/mirror/debian.org/debian/ squeeze-updates main

==========================

root@whiterock:/home/peter# hwinfo --sound
16: PCI 05.0: 0401 Multimedia audio controller
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_1013_6003
  Unique ID: CvwD.mMkE8+SLJG6
  SysFS ID: /devices/pci0000:00/0000:00:05.0
  SysFS BusID: 0000:00:05.0
  Hardware Class: sound
  Model: "IBM ThinkPad A20m"
  Vendor: pci 0x1013 "Cirrus Logic"
  Device: pci 0x6003 "CS 4614/22/24/30 [CrystalClear SoundFusion Audio Accelerat
or]"
  SubVendor: pci 0x1014 "IBM"
  SubDevice: pci 0x0153 "ThinkPad A20m"
  Revision: 0x01
  Memory Range: 0xf0122000-0xf0122fff (rw,non-prefetchable)
  Memory Range: 0xf0000000-0xf00fffff (rw,non-prefetchable)
  IRQ: 11 (4787 events)
  Module Alias: "pci:v00001013d00006003sv00001014sd00000153bc04sc01i00"
  Driver Info #0:
    Driver Status: snd_cs46xx is active
    Driver Activation Cmd: "modprobe snd_cs46xx"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
==========================

-- 
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