Out of 13 DVDs, two cannot be played on my laptop, it seems.
I have absolutely no idea why those two fail. One has never been used before.
I do have 'libdvdcss' installed. The other DVDs work just fine.
I cannot find anything that those two DVDs have that the others don't have.
The DVDs are recognized just fine, but it is impossible to play them...
Does anyone have any idea what might be going on?