Comment 7 for bug 552060

Same problem here (just since upgrade from 10.04. It was fine in Karmic). My Plantronics USB headset is causing the issue.

Snip>>>
videoinput: Version is 7, capabilities 5010011.
videoinput: Maximum input width: 768 pixels.
tvtime: Sampling input at 768 pixels per scanline.
xcommon: Pixel aspect ratio 1:1.
xcommon: Displaying in a 768x576 window inside 768x576 space.
Found "Generic USB Audio Device : USB Audio (hw:2,0)"
xcommon: Received a map, marking window as visible (61).
xcommon: Pixel aspect ratio 1:1.
xcommon: Displaying in a 768x576 window inside 768x576 space.
Channels count non available
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It crashes at that point with my existing ~/.tvtime/ config from Karmic, or after a wipe of the config.