bluray playback not works with makemkv newer than 1.10.8

[warpme@…]

current master with makemkv newer than 1.10.8 (tested with 1.12.0) hangs when asked frontend to play bluray disc.

fe log is following. Last line is line when frontend hangs.

2018-04-15 12:26:03.555259 I BDInfo: Trying bd://media/disk
2018-04-15 12:26:03.555389 I BDInfo: Opened BDRingBuffer device at /media/disk
2018-04-15 12:26:03.555553 D libbluray: bluray.c:1393: libbluray version 0.9.3
2018-04-15 12:26:03.555602 D libbluray: bluray.c:1420: BLURAY initialized!
2018-04-15 12:26:04.534547 D MythCoreContext::RegisterFileForWrite(): /myth/tv/23806_20180415095000.ts
2018-04-15 12:26:07.373583 D libbluray: aacs.c:79: AACS/Unit_Key_RO.inf found. Disc seems to be AACS protected.
2018-04-15 12:26:07.373656 D libbluray: bdplus.c:87: BDSVM/00000.svm not found. No BD+ protection.
2018-04-15 12:26:07.374916 D libbluray: aacs.c:105: Using libaacs for AACS
2018-04-15 12:26:07.374937 D libbluray: aacs.c:129: Loading aacs library (0x3739f70)
2018-04-15 12:26:07.374961 D libbluray: aacs.c:140: Loaded libaacs (0x3739f70)
2018-04-15 12:26:07.374977 D libbluray: aacs.c:143: Registering libaacs filesystem handler 0x7f7e927dddc0 (0x3739f70)

[warpme@…]

please mark this ticket as invalid.

it looks like makemkv 1.10.9+ requires generic scsi device to probe bluray drives. some distros are creating /dev/sgX device with 600 mode. If frontend runs as different than root user, makemkvcon will exit (due lack of permission to read from /dev/sgX) leaving frontend in non-responsive state. Issue can be solved i.e. by dev rule setting /dev/sgX mode to 660.

Sorry for false bug report!

[Stuart Auchterlonie]

Thanks for letting us know