/dev/video0 device permission problem

rrk · Post by **rrk** » Sun Aug 19, 2007 11:15 pm

zm does not have permission to use /dev/video0
from the system log
zmdc log shows video0 crashing on a regular basis

current ownership of /dev/video0 is root and video
i have added www-data to the video group zmuser is not a system user should it be?
zm 1.23 from debian pkg

rob

rrk · Post by **rrk** » Sun Aug 19, 2007 11:47 pm

which user from with in zmc is accessing /dev/video0
making zmuser a system user does not fix the problem
rob

PeterHoward · Post by **PeterHoward** » Mon Aug 20, 2007 5:41 am

The permissions aren't as obvious as you'd think . . there's a program /usr/bin/zmfix which should get the perms right (when run as root). Alternately the brute-force "sudo chmod 777 /dev/video0" will get things working

rrk · Post by **rrk** » Mon Aug 20, 2007 6:40 am

thanks that worked I was trying to avoid the 777 club/stick

Lee Sharp · Post by **Lee Sharp** » Tue Aug 21, 2007 3:19 am

Then suid the zm-fix xcript.

jorloujr · Post by **jorloujr** » Tue May 13, 2008 5:07 pm

Me too am facing the same problem, brute force chmod 666/dev/video0 does works, but zmfix do not ...

Any hints ?

I,m on Ubuntu 8.04, ZM installed from Synaptic.

PeterHoward · Post by **PeterHoward** » Tue May 13, 2008 10:44 pm

jorloujr wrote:Me too am facing the same problem, brute force chmod 666/dev/video0 does works, but zmfix do not ...

Any hints ?

I,m on Ubuntu 8.04, ZM installed from Synaptic.

zmfix needs to be run with root permissions to change things. So you either do Lee's trick of suid-ing the script, or you run "sudo zmfix".

PJH

jorloujr · Post by **jorloujr** » Thu May 15, 2008 10:55 pm

PeterHoward wrote:zmfix needs to be run with root permissions ...

Thanks Peter !

I found

http://www.zoneminder.com/wiki/index.php/Ubuntu_7.04

and

sudo chmod 4755 /usr/bin/zmfix

worked fine. Silly me ...