[vlc] Re: RPC2 drives and MacOS X

[Robert Nicholson]

You also get this in the system.log when method is title

Oct 31 19:21:10 Robert-Nicholsons-Computer mach_kernel: SAM Multimedia: 
READ or WRITE failed, ASC = 0x6f, ASCQ = 0x04
Oct 31 19:21:10 Robert-Nicholsons-Computer last message repeated 4 times
Oct 31 19:21:10 Robert-Nicholsons-Computer mach_kernel: disk1: I/O 
error.

On Thursday, October 31, 2002, at 04:44  PM, Samuel Hocevar wrote:

> On Thu, Oct 31, 2002, Serge Cohen wrote:
>
>> [vlc.app/Contents/MacOS] cohen% setenv DVDCSS_METHOD disc
>
>    Do you get the same issues with the "title" method?
>
>> It seems to me that libdvdcss is able to crack the disk key but for 
>> some
>> reasons fail on the title key (which as far as I understood should be
>> easy to get if one already have the disc key, right?)
>
>    If the disc allows us to retrieve it, it's trivial. However we 
> cannot
> always fool the RPC2 protection scheme. What is happening is either a)
> Matshita having understood why the usual RPC2 implementation sucked, or
> b) OS X trying to be clever and preventing us to read from a disc if
> there is a region mismatch.
>
>    If a) is happening, the only solution I can think of is to change 
> the
> drive's region, but I'm not well aware of region-free hacks wandering
> around.
>
>    If b) is happening, it's a bit more exciting because we can look for
> the problem. What might be interesting is the exact kernel error for 
> the
> "read error", under Unix I'd use strace or truss, is there anything 
> like
> this available under OS X?
>
>> Is this a known problem, or only a problem on MacOS or even on a 
>> certain
>> type of machines?
>
>    This problem was already reported once or twice, but none of the
> reporters had Linux on their Ti to double check the behaviour. Would
> you have Linux installed by chance?
>
> -- 
> Sam.
> -- 
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