On Thu, Mar 14, 2002 at 01:30:22PM +1100, Terry Collins wrote:
> I have an ide CD burner that works, - sort of. I actually have a
> lot/enormous percentage of timeout problems with it. Is this normal?
Check your DMA settings for the burner:
Before loading the ide-scsi module (to get the burner to work),
load the ide-cd module (do _not_ ignore hdc). After loading the
ide-cd module, do
hdparm -u1 -d1 /dev/hdc
That will turn on interrupt unmasking and DMA transfers for the
drive, which should significantly lower the CPU load.
Not all drives support this, but almost all modern ones do.
After that, unload the ide-cd module and load the ide-scsi
module. It's a bit of a pain, but that's the only way I know of
to get it to work.
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