[MPlayer-users] Rescuing a scratched DVD

[D Richard Felker III]

On Sun, Dec 07, 2003 at 04:27:52PM +0100, Magnus Damm wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> I think this is related:
> 
> I usually rent DVD:s and use mplayer to watch them on my media box.
> This is a ok solution as long as the DVD is without scratches/finger-
> prints. Sometimes (1 out of 10 maybe) the DVD is scratchy/dirty and
> my DVD drive together with Linux and mplayer will totally slow down,
> I guess trying to read the problematic area of the disc. 
> 
> I have found out that my Linux kernel likes to disable DMA when a
> read error occurs and I have to manually use hdparm to re-enable 
> it again. And this can only be done after all IO has completed,

No, use the -k1 option when you run hdparm the first time and it will
keep settings across device reset (error).

Rich