Hmm, I don't see any explicit crash reason.
If Mumble is actually working for you with Urban Terror but simply has no sound (i.e. if the window and/or tray icon are still there, behind UrT, but you just cannot talk in mumble): there are two details I've noticed:
1)Your mumble said (among other things):
Code:
GlobalShortcutX: Unable to open any keyboard input devices under /dev/input, falling back to XInput
Try setting mumble to activate based on "Voice activity" rather then "Push to talk"
2)
Code:
PulseAudio: Starting input alsa_input.pci-0000_00_04.0.analog-stereo
"alsa" part is the key here. I remember back when I was an Ubuntu user with ALSA I couldn't run any game and play background music in any music player at the same time. Actually, using ALSA I couldn't run any two sound-needing applications at the same time.
If you got the stones for it, you can try switching to OSS4. It's a bit more complicated to set up but I use it personally and it works just fine most of the time. Once OSS is installed, you can configure all ALSA-based applications to use OSS by adding a hidden file to your home folder called ".asoundrc" using your favorite plain text editor (i.e. gedit or kate, but not OpenOffice Writer or such). The file must contain the following:
Code:
pcm.!default
{
type oss
device /dev/dsp
}
mixer.!default
{
type oss
device /dev/dsp
}
If you're using Nautilus or such filesystem browser you can use View->Show Hidden Files to view hidden files. Hidden files are those starting with a .(period) or ending with a ~(tilde).