It works for the second one (the HP writer). But the kernel completely hangs for 2 seconds trying to wake up the drive (with 2.4.18-pre3-ac2).
My log shows:
hdd: DMA disabled
hdd: drive not ready for command
hdd: ATAPI reset complete
But preemption does help in that case.
The first cd-rom drive does not support sleep or standby commands. ;-(
*Kristian
:... [snd.science] ...:
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