Fedora 8 , K3b, and no writer

[toolshed7777]

Installed Fedora 8 on my box then yum updated it.

The problem I am having is that non-root users cannot use the DVD burner with K3B.
I can "su -" into root and use K3B. K3B sees the writer as root.

It appears that there are permission issues on the DVD writer which I believe is /dev/sr0.
Which means it is a "udev" issue.

Has anyone see or knows of a fix to the /etc/udev/rules.d/* that will fix the issue with non-root user being about to use their cd/dvd writers( or device /dev/scd0).

[wintersm]

add the group "disk" to your user (use the user manager)..

if you do a ls -l /dev/scd0 you will see the group is disk, with owner root and permissions that give the group disk and owner access to the device, so adding your user to the group disk will ensure you can use it.

(thats what I had to do)..

PS dont forget to log out and back in..

[toolshed7777]

ls -l /dev/sr0
brw-r----- 1 root disk 11, 0 2007-12-09 13:00 /dev/sr0

My user is apart of the disk group.

I believe the problem is that the disk group only has Read permissions and does not have any Write permissions.

[wintersm]

do a

chmod g+w /dev/sr0

mine already had group write access so the chmod to add write permissions should do the trick..

[toolshed7777]

I think I may have found a solution. I will see if it works tonight.
Here is the current permissions on /dev/sr0

$ ll /dev/sr0
brw-r----- 1 root disk 11, 0 2007-12-09 13:00 /dev/sr0

#Now add user to group "disk", username is your login name
$ usermod -G username, disk username

#Backup orginal
$ cp /etc/udev/rules.d/50-udev-default.rules  /root/50-udev-default.rules.orginal

#Edit the file
$ emacs /etc/udev/rules.d/50-udev-default.rules 

#Change this line:
SUBSYSTEM=="block", KERNEL=="sr[0-9]*", SYMLINK+="scd%n"
KERNEL=="sg[0-9]*",               GROUP="disk", MODE="0640"

#To this:
SUBSYSTEM=="block", KERNEL=="sr[0-9]*", SYMLINK+="scd%n", MODE="0664"
KERNEL=="sg[0-9]*",               GROUP="disk", MODE="0664"

#Then test by restart udev as root
$ start_udev
$  ll /dev/sr0
brw-rw-r-- 1 root disk 11, 0 2007-12-09 13:00 /dev/sr0

I have verified this fixes my issue.

[stevea]

Yeah well you can now start k3b, but when you get the error log insisting that you set "ulimit unlimited" what will the user do ?

[toolshed7777]

I did not have that issue. My burning worked very well.
I did not have any ulimit issues, However i will check messages tonight or run k3b through terminal.

If it wants ulimit unlimited then it will get it.
I have been using linux for about 10 years now, my one complain has always been hardware.
I dont want to have to work to get my hardware working. It should just work.

--sbradley

[BlackTiger]

Originally Posted by stevea

Yeah well you can now start k3b, but when you get the error log insisting that you set "ulimit unlimited" what will the user do ?

Did have the permission problem as user and the ulimited thing when trying to burn with root.

I applied the fix for udev given by toolshed7777 and now everything is working fine again

Thanks

PS: As said such things should not happen, I also had to modify my udev rules to get sound working again after some Fedora updates

[toolshed7777]

I am glad that fix your issue.

What was your updates to fix the sound BlackTiger? I am having a problem were sound not work now.