DVD drive not reading CDs

Exactly the same problem here (The drive is a Sony Q58A, which seems to be a rebadged LiteOn SOSW-8?3S. The notebook is a Latitude D820).

Strange thing is, that the first couple of days it worked correctly (burned several CD-RW's and DVD's).

Then it failed to spin up CD's correctly (CD-R, CD-RW, originals (data and audio)). It tries for some time, and then just gives up.
DVD's are recognized correctly, and I am able to burn them. This is why I suspect it to be a firmware problem (something in the lookup tables for media types perhaps).

The alternative firmwares I have tried so far do not resolve the problem (Original is UDS1, I tried the UYS2 and UYS3 versions, and the one from Lite-on).
I will probably return this thing to Dell to get a replacement.

I have finally figured out the problem. This is not a software problem, but a hardware problem. It seems that CD/DVD drives read these two types of media through different 'sensors' and the CD sensor in my hardware was damaged. Since my computer has a three year warranty, I got the drive changed and it is functioning fine.

Hope you can do the same.

Good Luck.