libdvdread: Using libdvdcss version 1.2.10 for DVD access
libdvdread: Could not open /dev/dvd with libdvdcss.
libdvdread: Can't open /dev/dvd for reading
Hopefully it doesn't at all have to do with the next as in hopefully any and all *brands* and *types* of motherboard controllers are now adequately supported by Linux drivers.
FWIW: I have an Asus P5Q Pro motherboard. Also, on this same box, I have an pata DVD burner. (some months back/ago) I had hardware compatability issues with the (particular brand of) pata motherboard controller on this motherboard. The exhibited symptoms/problem: Some cd/dvd activities worked while others cd/dvd activities wouldn't work or sometimes worked and sometimes not.
A Promise pata controller (plugged it in) was my solution (back then) (I went into bios and disabled the motherboard's pata controller)
Question (but probably for yet a different thread): are sata DVD hardware compatability still a bit on the new side yet for Linux? (still bugs, etc.?)
(if you're curious on this) As root the next command
then search google's Linux section for your specific brand/version of pata/sata controller (whichever of those two types of controller your particular DVD drive)
Once upon a time, I found out that I was *not the only one* (with that particular, specific hardware compatability issue).