<div dir="ltr">Hi,<br><br>I recently started experiencing problems
opening *some* DVDs. Take, for instance, some of the recent DVDs that I
have tried to open, such as Buffy, Angel, and Boy Meets World season
sets. These are all legit, region 1 releases and in flawless condition.
Importantly, 90-95% of these discs still do open and play just fine. Only
some of them do not. For example, all of Boy Meets World Season 1
opened, as did discs 1 and 2 of Season 2, but Season 2 Disc 3 will not.
I took it from one computer to another and had the same problem there.
The type of disc, region, and whether CSS is present is static across
both affected and un-affected discs. I can come up with no explanation
for why most discs are loading and a select few are not.<br><div>
<br>
Some additional information to hopefully help narrow down the problem and eliminate some likely causes:<br>
<br>
- I am using Ubuntu 16.04 and, yes, I have installed the restricted
formats / libdvdcss. About 90-95% of DVDs play with no trouble.<br></div><div>-
I am using libdvdcss 1.4.0. I recently upgraded from Ubuntu 14.04 to
16.04 and my libdvdcss may have been upgraded with it, but I am certain
that I am currently using this version.<br></div><div>
- I have purged and re-installed restricted formats /
libdvdcss, but continue getting the same problems for the affected
discs.<br>
- No, the DVDs are not physically unreadable or a different region;
they worked fine before the upgrade and still do on non-Linux devices that don't rely on libdvdcss.<br>
- This affects multiple computers (different makes and models) and DVD drives (ditto), so it's not a hardware issue.<br>
- I have tried deleting /.dvdcss folder and rebooting, but that solves
nothing (incidentally, the folder for the affected discs are empty, which
is what leads me to think that this is libdvdcss-related).<br>
- The volume is loading as an unknown format according to Ubuntu's
"Disks" application, so it is recognizing that a disc is present (and it
correctly reads the size of the data on the disc).<br>
- Wine-based programs also seem to be reading the disc label just fine, but see no files present.<br>
- Most damning of all that this is libdvdcss-related, the DVDs are
perfectly readable by MakeMKV, which I believe has its own decryption
codecs. Thus, software not contingent on libdvdcss can read the disc even using the same hardware and OS.<br>
- This only started happening after I upgraded to Ubuntu 16.04, but it's
possible that another software upgrade is the cause; I was only applying
minimal updates to the computer that I was mainly using for DVDs (it
was on 14.04 before).<br>
- The BMW discs in my example are not encrypted, but Bolt, for example,
is encrypted and reads just fine, so it is not an encryption problem.<br><br></div><div>I'm happy to provide additional information and run tests/commands as needed.<br><br></div><div>Thanks,<br></div>Whitney</div>