[mythtv-users] debian: can't install ivtv driver

[Michael T. Dean]

On 04/24/2008 03:08 PM, Brian Wood wrote:
> On Apr 24, 2008, at 12:38 PM, starcycle wrote:
>   
>> I just
>> rebooted, and in fact you are right, the permissions reverted to
>> root:video 660 (with a c in front? crw-rw----).
>>
>> so the obvious question is, how do I get it to not do that? :D And
>> maybe relatedly, why can't mythtv access the card with 775 permissions
>> even though I put mythtv in the video group?
>>     
>
> You'll have to re-write your udev rules. Not sure precisely how debian  
> has them set up, but take a look under /etc/udev.

And on the "and" (I'm assuming you're asking why MythTV--yes, I meant to 
capitalize that--can't access the card with its permissions set to 660; 
i.e. "why can't mythtv access the card with[out] 775 permissions"), 
remember that often there are various users involved in running the 3 
different main parts of MythTV.  Sometimes the backend is run as one 
user (i.e. root) while the frontend is run as another (i.e. mythtv) and 
mythtv-setup may be run as another (i.e. whatever user you logged in as).

Note, also, that the difference between real and effective uid may 
become important, depending on your system configuration.

Mike