[mythtv-users] Irratic PVR250 ivtv module load - Ubuntu

Andrew C. Stadt acstadt at stadt.ca
Tue Jul 13 06:20:43 UTC 2010


On 13/07/2010 2:13 AM, Douglas Peale wrote:
> On 07/12/2010 09:49 PM, Douglas Peale wrote:
>    
>> On 07/12/2010 08:56 PM, John Drescher wrote:
>>      
>>>> It seems that everyone has their own opinion - some say udev rules
>>>> aren't so good, others swear by them.
>>>>   I don't see any ivtv named files in: /lib/udev/rules.d I would have
>>>> to figure out how it all works!
>>>>
>>>>          
>> I just spent a bunch of time trying to figure out how to get udev rules to work without success.
>>      
>    
>> The two symbolic links it is intended to create never show up. I have no idea what I am doing wrong.
>>      
> I found and fixed at least one error in my file, but I found that the instructions are misleading. Even though the system
> monitors the directory for changes, rules are only applied when the device is first recognized. the symbolic link "WebCam"
> showed up when I unplugged and plugged in the web cam.
>
> But it is all pointless. The tools that use the web cam won't let you enter a symbolic link. They display a list box of the
> devices they found, and the symbolic link does not show up. Those same tools are the ones that have problems when the device
> name changes. They all think that an ATI HDTV Wonder is just as good as a Microsoft LifeCam Cinema to use as a web cam.
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>    
Never thought to try it, but once you can properly address a specific 
device in the udev rules, is it possible to force it to take a specific 
/dev/videoX ?

Borrowing from my other post:

SUBSYSTEM=="video4linux", ATTR{name}=="ivtv? encoder MPG", 
KERNELS=="0000:04:01.0", SYMLINK+="video0"
SUBSYSTEM=="video4linux", ATTR{name}=="ivtv? encoder MPG", 
KERNELS=="0000:04:02.0", SYMLINK+="video1"

I also found must of the udev documentation to be very misleading and/or 
referring to obsolete revisions.




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