hdparm on startup sets up both my dvd-rom (pioneer dvd-116) and my dvd-rw (NEC 1300A) to dma=on. Unfortunatly in at least >2.6.0 (including mm and gentoo-dev) this leads to the dvd-rw not being able to burn. Reproducible: Always Steps to Reproduce: 1. 2. 3. SMP (dual athlon) system on an ASUS A7M266-D
Since this is a bug in the upstream kernel, we can't do much about this: can I suggest that you file a bug at http://bugme.osdl.org? Thanks...