sony dvd writer doesnt write CD RW

[needee]

OS: SLED 10 SP1

The DVD Writer device file is "/dev/sr0"

When i insert a dvd or cd rom (having data) inside the DVD Writer, it mounts like:

# mount
/dev/sr0 on /media/Disk type iso9660 (rw,nosuid,nodev,utf8,uid=0)

i can't write CD RW media using my SONY DVD Writer, but I can easily write DVD-R or DVD-RW.

Infect when i insert the CD-R/CD-RW media in the SONY DVD writer, and then execute the k3b to write on the blank CD-R/CD-RW, k3b starts writing, no error, everything goes smooth, .. after performing the writing operation k3b ejects the media, but CD-R/CD-RW media always remains blank

does dvd writer doesnt write on blank cd-r/cd-rw ?

The output of "hwinfo --cdrom" is attached

Regards
Needee

[needee]

sory i forget to attached the "hwinfo --cdrom" output file in my previous post. its now attached.