more acd0+ihc9r problems

[Tom Evans]

On Sun, 2008-01-06 at 23:29 -0500, Aryeh M. Friedman wrote:
> I am using 8-current (including the latest pmap mods) amd64 on a MSI
> Neo-F mobo (P35+IHC9R with intergrated re(4) and sata) with a Plextor
> px-755a SATA dvd+/-rw.  I have the following issues with /dev/acd0:
> 
> If there is blank media present at boot time (have not tested with
> non-blank media) depending on media type the following happens:
> 
> 1. re(4) disappears (cd-r)
> 2. named fails but re(4) is present (cd-rw)
> 3. goes into infinite stall (not hang) (dvd-r)
> 
> If write is attempted to media depending on media type the following
> happens:
> 
> 1. Fails to fixate due to timeout (cd-r)
> 2. Fails to write anything (cd-rw and dvd-r)
> 

Doctor, it hurts when I do this...

1) Define disappears - the hardware is no longer present or visible to
the OS? What does pciconf -lv look like in both failure and success
states? 
2) How does named fail? Can you restart named? What error messages are
output in both cases?
3) Where in the kernel does it stall? Can you break in with the
debugger?

Tom
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