On Wed, 1 Oct 2025 20:26:16 -0400
Timothy M Butterworth <timothy.m.butterworth@gmail.com> wrote:
> I am trying to burn a data CD with K3b and I keep receiving the
> following error messages:
>
> cdrecord has no permission to open the device.
> Modify device settings in K3b to solve this problem.
>
> I looked through settings and didn't see anything. I tried running
> cdrecord from the command line and got the same permissions error. I
> was able to use cdrecord to erase the disk with sudo. I tried running
> K3b with sudo and got an unsupported error.
>
> It seems like it may be group issue. My account is a member of the
> following groups:
>
> tmb@hppavilion:~$ groups
> tmb cdrom floppy sudo audio dip video plugdev netdev scanner bluetooth
> lpadmin
Have you checked the ownership and permissions on the CD drive? You
should see something like:
root@hawk:~# ll /dev/sr0
brw-rw----+ 1 root cdrom 11, 0 Sep 30 13:47 /dev/sr0
root@hawk:~#
tmb@hppavilion:~$ ls -l /dev/sr0
brw-rw----+ 1 root cdrom 11, 0 Oct 1 20:15 /dev/sr0
I tried changing it to:
tmb@hppavilion:~$ ls -l /dev/sr0
brwxrwxrwx+ 1 root cdrom 11, 0 Oct 1 22:24 /dev/sr0
I still get the same error.
I ran:
tmb@hppavilion:~$ sudo chmod 4711 /usr/bin/wodim
tmb@hppavilion:~$ sudo chmod 4711 /usr/bin/cdrdao
and now it works.