Boot time driver conflict

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Old 09-08-2010
Boot time driver conflict

I have a Microdia web cam. Some times it won't work if and only if there is a "HV7131R image sensor detected" statement in the boot up.
In this case when I try to get a .png snapshot all I get is a frame full of what appears to be white noise only it is mostly green.
Here is the command I am using:
TV="-tv driver=v4l2:device=/dev/video${vd}:width=320:height=240:norm=NTSC:chanlist=us-cable:input=0:noaudioSmilieutfmt=i420"
OUT="-fps 30 -cache 128"
PIC="-hue 0 -brightness 0 -contrast 0 -saturation 0 -aspect 4:3"
mplayer tv:// $TV $OUT $PIC -vf screenshot -vo xv,x11,
This does not work when ${vd} is 0 or 1 and it is using HV7131R.
If it is not using HV7131R it works properly.
I think I am getting either gspca or HV7131R usage defined at boot time. Is there a way to force either one so I can test?
Hope it is OK here as the problem occurs in my script.
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img-png(n)																img-png(n)


img-png - Img, Portable Network Graphics format (png) SYNOPSIS
package require Tk package require img::png ?1.4? image create photo ?name? ?options? _________________________________________________________________ DESCRIPTION
The package img::png is a sub-package of Img. It can be loaded as a part of the complete Img support, via package require Img, or on its own, via package require img::png. Like all packages of Img it does not provide new commands, but extends the existing Tk command image so that it supports files containing raster images in the Portable Network Graphics format (png). More specifically img::png extends Tk's photo image type. The name of the new format handler is png. This handler provides new additional configuration options. See section PNG OPTIONS for more detailed explanations. All of the above means that in a call like image create photo ?name? ?options? [1] Image data in png format (options -data and -file) is detected automatically. [2] The format name png is recognized by the option -format. In addition the value for the option is treated as list and may contain any of the special options listed in section PNG OPTIONS. PNG OPTIONS
The handler provides no true options at all, but accepts pairs of keys and values when writing a PNG file. Each pair will be written as a named text chunk where the key provides the name of the chunk and the value its contents. For example png Author <name> Title <title> Description ... TRANSPARENCY
If you want to write images to disk which contain transparency information (e.g. PNG with alpha channel) you need at least Tk 8.3. SEE ALSO
img-bmp, img-dted, img-gif, img-ico, img-intro, img-jpeg, img-pcx, img-pixmap, img-png, img-ppm, img-ps, img-raw, img-sgi, img-sun, img- tga, img-tiff, img-window, img-xbm, img-xpm KEYWORDS
image handling, png, tk COPYRIGHT
Copyright (c) 1995-2009 Jan Nijtmans <> Img 1.4 img-png(n)

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