Hi, libburn obviously tries to tell the drive the desired speed. But the drive decides to work much slower, despite promising speeds up to 12x BD with the given BD-R. A possible reason could be Defect Management which is caused by the cdrskin option blank=format_if_needed. It checkreads the write result after writing about half a drive buffer to the medium.
But the xorriso run was not told to format its BD-R. Does dvd+rw-mediainfo report it as formatted after the burn? (I.e not READ FORMAT CAPACITIES: unformatted: 12219392*2048=25025314816 but rather BD SPARE AREA INFORMATION: Spare Area: 196608/196608=100.0% free ) Do you get better speed from growisofs ? growisofs -Z /dev/sr0=disc.iso You could add option stream_recording=on to the runs of cdrskin and xorrecord to surely disable Defect Management. Have a nice day :) Thomas -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458230 Title: libburn imposing 0.2x BD-R burn (5-6 hours) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libburn/+bug/1458230/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
