Audio CAPTURE gone on CentOS 5 host with XP guest

[rmuetze]

All,

I've happily used VBox with a Windows XP SP3 guest ever since for my windows-only telephony application which links my home office to my employers telephone switchboard. Suddendly, audio capture is gone and I'm left behind with a muted telephone. I recently upgraded from 3.0.4 to 3.0.6. COincidentally, the CentOS kernel packages have been upgraded around the same time.
Audio output is working in both the host and all my guests. Audio capture (input) is working on my host. I didn't change my audio mixer's settings and my KDE desktop packages didn't change. I tried downgrading to 3.0.4 to no avail. I tested audio capture in other guests, which fails too. However, I never tested this before so I can't tell if it broke recently or if it never worked for the other guests.
I disabled the KDE sound system, restarted it, reconfigured it and finally wrongful cursed it ;(
Right now, I'm lost.

I grepped for alsa and audio in VBox's log file:

[rmuetze@oompa-loompa storage]$ grep -i alsa /opt/virtualbox/Machines/vm-winxp-qs-01/Logs/VBox.log
00:00:01.166 AudioDriver <string> = "alsa" (cch=5)
00:00:01.442 Audio: Trying driver 'alsa'.
00:00:01.450 ALSA: ADC frequency 44100Hz, period size 940, buffer size 3763
00:00:01.452 ALSA: DAC frequency 44100Hz, period size 940, buffer size 3763
[rmuetze@oompa-loompa storage]$ grep -i audio /opt/virtualbox/Machines/vm-winxp-qs-01/Logs/VBox.log
00:00:01.166 [/Devices/AudioSniffer/] (level 2)
00:00:01.166 [/Devices/AudioSniffer/0/] (level 3)
00:00:01.166 [/Devices/AudioSniffer/0/Config/] (level 4)
00:00:01.166 [/Devices/AudioSniffer/0/LUN#0/] (level 4)
00:00:01.166 Driver <string> = "MainAudioSniffer" (cch=17)
00:00:01.166 [/Devices/AudioSniffer/0/LUN#0/Config/] (level 5)
00:00:01.166 Driver <string> = "AUDIO" (cch=6)
00:00:01.166 AudioDriver <string> = "alsa" (cch=5)
00:00:01.442 Audio: Trying driver 'alsa'.
00:00:01.442 Audio: set_record_source ars=0 als=0 (not implemented)
00:00:02.899 Audio: set_record_source ars=0 als=0 (not implemented)
00:01:02.048 05ada9e0 00000000 00000000 00000000 Virt 000002443125469647 000002443135463520 2-ACTIVE Audio timer

Any help here is appreciated! Thanks a lot! Mahalo!

Regards

Ruediger

[Perryg]

You should report this to Bugtracker. The link is below my post. You will need to setup an account there because it is on a different system, sorry
Please report back with the fix so others that might encounter this problem can find help.

He mea iki