Comment 4 for bug 561901

I also have this. I've tested it on a number of DVD's I have. If I try reading a previously written DVD-R, or DVD+R DL, the drive disappears. If I remove the disc, the drive reappears. If I try a previously written CD-R or DVD+RW, it works as expected.

It did not work before, and after upgrading, it still doesn't work. This is my kernel version,
Linux kmpn 2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:09:38 UTC 2010 x86_64 GNU/Linux

If you need anything else from me, please tell me what you need. Thank you.