I've made some further testing, without much progress.
I've rebooted with an ubuntu 9.10 liveCD. While running 9.10, I was able to mount CDs in my CD drive (I have two optical drives, a CD writer and a DVD writer, none is working under Lucid). I've not been able to test the DVD drive while running 9.10, because the liveCD was in the DVD drive and I couldn't unmount it.
I've realized that if I reboot the machine and immediately after reboot I insert a data DVD or a blank DVD, it works as expected (data DVD is mounted, blank DVD is recognized, appears in Desktop and in Brasero). I attach the results of running
I've made some further testing, without much progress.
I've rebooted with an ubuntu 9.10 liveCD. While running 9.10, I was able to mount CDs in my CD drive (I have two optical drives, a CD writer and a DVD writer, none is working under Lucid). I've not been able to test the DVD drive while running 9.10, because the liveCD was in the DVD drive and I couldn't unmount it.
I've realized that if I reboot the machine and immediately after reboot I insert a data DVD or a blank DVD, it works as expected (data DVD is mounted, blank DVD is recognized, appears in Desktop and in Brasero). I attach the results of running
sudo /lib/udev/cdrom_id --debug /dev/sr0
while a blank DVD is inserted and recognized.