I've noticed an issue, where sometimes after resuming for suspend, the system will refuse to detect my usb headset. Right now I'm using gnome 3 on arch linux, when this happens the headset does not show up in the sound settings output tab, the laptop speakers work fine. Unplugging/Replugging the headset does nothing.
It doesn't matter if the headset is plugged in when I suspended or not, I've seen it happen in both situations, and it doesn't always happen (it seems kind of random). I also saw this happen when I was using XFCE and KDE on arch, and when I used ubuntu 11.10. so I don't think its anything to do with gnome or the distro. Today I think I narrowed it down to pulseaudio. When this happens, if I run pulseaudio -k to restart pulseaudio, the usb headset pops up fine in the sound settings. The machine is an Asus u52f, and its a microsoft lifechat LX-3000 headset. Right now I am on arch linux with pulseaudio version 1.1-2.
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