On 24 Aug 1999, Perry E. Metzger wrote:

>
>Strangely, under 1.4.1, a machine I've borrowed hangs whenever you
>touch the ATAPI CD-ROM. (An identically configured machine does the
>same so I don't think its bad drives per se.)
>
>The errors are
>
>pcide:1:0: Lost interrupt
>	type atapi
>	c_bcount: 32
>	c_skip: 0
>
>after printing that, it goes legs up and won't respond to anything at
>all...

I had exactly the same problem under 1.3.2 and 1.4, except that I could
access the cdrom for "a while", and then it hung.  Eventually found that
if I set flags on the "cd" entry in the kernel config file which turned
off UDMA modes, the problem went away.  AFAIR, the cdrom drive (an Acer 32x
had been attaching in UDMA mode 2).  Curiously, if I also turned off DMA
modes (and so forced the drive to attach in its best PIO mode) it didn't
work either, but I decided to quit while I was ahead!

I've also had problems with this cdrom metamorphosing into a 62MB wd
drive...


Roger

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Roger Brooks (Systems Programmer),          |  Email: R.S.Brooks@liv.ac.uk
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