Bob,
just some more findings I got. I am trying to use the USB camera with build in mic (Microsoft VX-800). In ROM 1.5 the mic is working correctly due to the settings->sound->device input, but the video is not. It was working in the previous ROM.
I suppose it has something to do with the uvcvideo incorporated in the kernel. Here is what I get in logcat:
E/CameraHal( 87): previewThread(1762): VIDIOC_DQBUF Failed!!! err[Invalid argument]
E/Lights ( 257): write_int failed to open sys/class/leds/rk29_key_led/brightness
E/CameraHal( 87): previewThread(1762): VIDIOC_DQBUF Failed!!! err[Invalid argument]
E/CameraHal( 87): previewThread(1776): mPreviewErrorFrameCount is 2, camera driver or device may be error, so notify CAMERA_MSG_ERROR
E/CameraHal( 87): previewThread(1788): camera driver or device may be error, so notify CAMERA_MSG_ERROR
D/CameraHal( 87): previewThread(1644): camera driver or device may be error, so preview thread wait for command thread wake...
E/Camera ( 2899): Error 100
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