On Sat, Feb 05, 2000 at 05:05:38PM -0800, Gordon Messmer wrote:
> Hal Burgiss wrote:
> > Just got a new IBM 7200 RPM 13G HDD, and I am finding it impossible to
> > turn on DMA with hdparm. Kernel version is 2.2.15pre5. It immediately
> > resets and disables DMA. Using '-d1 -X34' causes an immediate, hard
> > lockup. What's really disappointing is that my el-cheapo WD HDDs with
> > DMA on show 2-3 times the throughput of the IBM with 'hdparm -tT'
> > (different box with newer BIOS). I've played with the BIOS a bit which
> > does support UDMA33, but not having any luck there. PIO mode is set to
> > auto. Any ideas???
>
> Find the file "dvd-ide-2.2.14-1.diff.bz2". I've forgotten where I got
> it, but contains ide updates for ther kernel, as well as dvd ioctls, and
> support for newer ide chipsets. I'm using it in my kernel rpm, and it
> works very well on my ABit BP-6 motherboard. Prior to this patch, the
> BP-6 behaved the same as your description.
OK, tried this, but got errors when going against 2.2.15pre5. This is
a quandry since 2.2.15pre5 introduces support for the new Acer cdrom
drive I have. IIRC Mark Lord did this and not Jens Axboe, and I don't
see a reference to it in either of the dvd-* patches. I contacted Jens
Axboe (sp?) (who did the dvd-ide patch), and he says the error is
indicative of a cabling problem -- bad cable, cable too long or
whatever. So tried brand new, shorter cable -- no difference at all,
same errors. Oh well ...
--
Hal B
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