Disc fails to recognise

[sauron11]

I have a recently acquired Blu-Ray that fails. On insertion of the disc, you can hear the drive going through the same access cycle multiple times before eventually giving up, and MakeMKV show the disc spinning, but eventually (after 2-3 times longer than it normally take to open the disc) it gives up, and simply show "No disc inserted".

This is the second Blu-Ray disc I've purchased that shows this failure mode, and I've updated to 1.8.11 and retried, with no luck. The debug log isn't helpful, it just shows:-

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Debug log started at Sun Jul 13 17:51:33 2014 , written by MakeMKV v1.8.11 linux(x64-release)
Using 524544KB for read cache.
001005:0000 MakeMKV v1.8.11 linux(x64-release) started
001004:0000 Debug logging enabled, log will be saved as /home/user/MakeMKV_log.txt

Any help would be much appreciated.

[Woodstock]

If you are getting a "no disk inserted" error, the operating system is not telling MakeMKV there is anything available to rip.

It is possible that Linux is taking control of the drive, and simply not allowing MakeMKV direct access.

[sauron11]

I was fairly certain that wasn't the problem, as I've had no problem getting discs to rip previously. However, I've now tried this again with the failed disc (recently purchased) and with an older disc I had already ripped, and I am indeed getting the same error on both. So, something has changed...

strace shows this repeatedly while it's trying to read:-

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poll([{fd=3, events=POLLIN}, {fd=7, events=POLLIN}, {fd=8, events=POLLIN}, {fd=6, events=POLLIN}, {fd=12, events=POLLIN}], 5, 0) = 0 (Timeout)
recvmsg(6, 0x7fff16b48180, 0)           = -1 EAGAIN (Resource temporarily unavailable)
write(3, "\1\0\0\0\0\0\0\0", 8)         = 8
write(3, "\1\0\0\0\0\0\0\0", 8)         = 8
recvmsg(6, 0x7fff16b48160, 0)           = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(8, 0x7fff16b48150, 0)           = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=3, events=POLLIN}, {fd=7, events=POLLIN}, {fd=8, events=POLLIN}, {fd=6, events=POLLIN}, {fd=12, events=POLLIN}], 5, 0) = 1 ([{fd=3, revents=POLLIN}])
recvmsg(6, 0x7fff16b48180, 0)           = -1 EAGAIN (Resource temporarily unavailable)
write(3, "\1\0\0\0\0\0\0\0", 8)         = 8

File descriptor 3 for the process in question is:-

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3 -> anon_inode:[eventfd]

I'm running this on Debian unstable. Any ideas as to what might have caused this would be much appreciated, before I begin the long and boring task of guessing and tweaking kernel versions, libraries, and so on .

[Woodstock]

You might try booting with Knoppix or some other "Live" Linux DVD. First, it will uncover whether or not the drive itself is the problem... failure to boot would be a give-away!

Bluray drives can have the problem of having BDs update their firmware "lockout list" for software, but that USUALLY won't give you a "no disk" error - it will report lots of key exchange failures.

[sauron11]

To clarify further, I think I spoke too soon (again),

Just tried this on another system (laptop) with the same Blu-Ray drive (USB attached). This has different versions of many of the system libs, as I haven't upgraded for ages, and a different version of MakeMKV. The problem disc (The Tournament) fails with the same error. Putting a previously working disc in immediately afterwards fails in the same manner, but ejecting and reloading that disc works. Reloading the problem one doesn't - that always fails.

So, I'm back to wondering what's going on - MakeMKV itself never gets past the first hurdle, so the debug log isn't very helpful, as it's basically empty apart from the first couple of lines. The OS appears to have no problem seeing the drive for some titles, but not for this one (and I have one other - "The Machine", which exhibits the same issue). I suppose a drive firmware update from another disc could be the problem, but I've no clue how to verify that. I'm starting to think twice about spending my cash on genuine Blu-Rays - this is highly irritating.