I just bought a Plextor PX-712A and some ritek 4x dvds.growisofs fails on random positions while writing with SK=3h/ASC=0Ch/ACQ=07h which is "Write error - recovery needed". It happens in both normal (I guess thats multisession) mode and with -dvd-compat (DAO) mode too.
-dvd-compat does not mean DAO, -use-the-force-luke=dao does.
It happens the same way in real writing mode and dummy mode too.
This is odd... If you perform multiple dummy recordings against same disc, does it fail on same LBA or does LBA vary?
It seems to me that this is some kind of buffer underrun problem because it sometimes goes even till 1GB with 2x speed but fails a lot faster with 4x speed. I have an old system (P3 600MHz) so underruns are really possible.Is it possible to turn on buffer-underrun protection when writing with growisofs?
growisofs engages buffer-underrun unconditionally, leaving *no* option for switching it off.
Is it possible to set memory buffer size? My drive has buffer underrun protection and I think that might solve the problem.
It's most likely media problem. I'd insist on trying another media brand before you proceed. A.