Comment 11 for bug 75753

I've got the same problem with my CD writer "Sony DW-Q58A" on my Dell Latitude D610 (chipset Mobile Intel 915PM Express (533 MHz FSB)) using Kubuntu 7.04 (Feisty Fawn) beta:

$ sudo ls -lh /dev/scd0
brw-rw---- 1 root floppy 11, 0 2007-03-26 02:18 /dev/scd0

When I change the group with "sudo chown root.cdrom /dev/scd0" or with "kdesu k3b-setup", it only works until the next reboot.

To change ownership permanently, I have to create a file /etc/udev/rules.d/50-udev.rules with:
KERNEL=="sg[0-9]*", ACTION=="add", ATTRS{type}=="4|5", GROUP="cdrom"