Ubuntu
linux package

  1. Bug #916677
  2. Comment #42

Comment 42 for bug 916677

Revision history for this message
stodjkat (stodjkat) wrote : Re: Boot problem with VIA VT6415 PATA IDE Host Controller and PATA CD/DVD-ROM (checked on ASRock 990fx and 890fx motherboards)

Thanks for this update.

I can confirm that with the libata.dma=1 setting, the boot is stable for my ASRock 990FX Extreme4, and has no more problems.

At first glance, libata.dma=1 would appear to be forcing DMA to ON, rather than OFF as suggested above, but that's not so important to me in comparison with having a stable boot up. However, just for comparison purposes I tried libata.dma=0 as well, and that seemed to be equally stable during boot up.

Therefore I propose that perhaps the problem is not so much in which value libata.dma ends up being set to, but more in the algorithm that tries to automatically determine which is the appropriate value for my system. Does that make sense or help tie down the precise location of the bug in the code?