Forgot to mention that I am using the Gnome desktop.
CD-R, DVD+R, DVD-RW are detected by the file browser (I guess it is Nautilus) and Brasero. I can read data already written on them and burn them with Brasero. I did not test DVD+RW. But CD-RW are not detected by the file browser and Brasero, therefore connot be used!
Answer to "phenest's" post: yes, I can burn CD-R with Brasero without any problem
Answer to " pylkko's" post: the link points to quite an old topic. However, I tried Xfburn as suggested in the post, dosn't work. gnomebaker, graveman, cdrecord are no more part of Jessie. gvfs is installed by default in Jessie/Gnome and "dbus-launch brasero" doesn't work (it starts Brasero but Brasero does not detect the CD-RW media). Didn't manage to get wodim working.
Thank you both for your inputs.
I switched the boot to my old Windows and the CD-RW is not readable either. Looks like a hardware problem, strange but may happen. I will change my drive and come back.