cdrom errors

[Wolfgang]

On Tue, 2003-12-23 at 00:13, Simon Bell wrote:
> >What alot of people tend to forget is, that because a device runs ok on
> >Windows, it doesn't mean it will run ok on Linux (Or any other Unix based
> OS
> >for that matter). I've known systems running DOS/Windows OS's for years, to
> >fail as soon as Xenix was installed on it (Another Unix based OS). And
> another
> >thing to remember is that most/all the hardware manufacturer's out there
> have
> >been brain washed into designing their hardware to run on Windows. And in
> >some/most cases it does things differently than a Unix based OS.
> >
> >I have run both Pioneer and Ricoh CD-ROM drives and burners in my systems
> with
> >Linux (for years now), without a single problem. Here in Australia they are
> a
> >little more expensive than other brands but at least I know they work
> without
> >any trouble.
> >
> >There's another command that can be put into the /etc/modules.conf file to
> >turn DMA on/off. But I can't remember what it was (Someone else on this
> list
> >may be able to shed some light on this). (I don't use that command on this
> >system here at the office, but on the one at home I do.)
> >
> >Wolf
> --
> 
> The odd thing is that this problem did not occur with redhat 8, but has done
> with redhat 9 and fedora.
> 
> Simon

Since I'm at home now I can suggest trying adding the following in your
/etc/modules.conf file.

options ide-cd dma=0

That should disable the CD-ROM DMA.

Yes, it is odd that this works with one distro version and not another.
I guess the kernel has gone through large changes, which affect alot of
things in the system. Still they have improved heaps since I first
started running RH7.0.

Wolf