[Conexant ID 2bfa] Recording problem

[Niloc Deeps]

If I leave the computer off all night, I can get the microphone working. However, if I try it again after about 5 minutes, it doesn't work. So, as you can see, I know how to set up the levels in alsamixer and pavucontrol etc, but it only works for about 5 minutes and then I can do nothing. At first, sound recorder works and also skype test call. Later, in sound recorder, there is no movement from the recording level meter and the record and play buttons stay active, and the stop button is still inactive. The levels in alsamixer and pavucontrol remain the same as when it was all working.
I've sent this throough apport so you should have enough info, but just in case:

lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10

Thanks
Col

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: colin 3374 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xb0000000 irq 16'
   Mixer name : 'Realtek ALC883'
   Components : 'HDA:14f12bfa,1025010f,00090000 HDA:10ec0883,10250000,00100002'
   Controls : 28
   Simple ctrls : 16
Date: Sat Jan 8 12:17:43 2011
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en_US:en
 LANG=en_GB.utf8
 SHELL=/bin/bash
SelectedCard: 0 SB HDA-Intel - HDA ATI SB
SourcePackage: alsa-driver
Symptom: audio
Title: [Conexant ID 2bfa] Recording problem
dmi.bios.date: 10/13/06
dmi.bios.vendor: Acer
dmi.bios.version: v1.3106
dmi.board.name: Prespa M
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: , Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrv1.3106:bd10/13/06:svnAcer,inc.:pnAspire5050:pvrNotApplicable:rvnAcer,Inc.:rnPrespaM:rvrNotApplicable:cvn,Inc.:ct1:cvrN/A:
dmi.product.name: Aspire 5050
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]