I can confirm this with Ali chipset. Drive speed is set to a quarter, my
CPU suffers while burning a dvd or while copying files to an ATAPI hard
drive and this makes my system HANG; the little workaround sets drive
speed to half, but it works just for a while, it still hangs if I try to
burn another dvd. I can't flip back from /dev/scd0 to /dev/hda, cause
alim15x3.ko module is missing. If you look at the related bug report
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/213639 you'll see
someone has compiled modules from 2.6.24-12 kernel (which cannot be
found anymore) against intrepid kernels, but just for AMD and Via
chipsets. I tried to build alim15x3 module from alim15x3.c I took from
the latest kernel source, but it couldn't build any modules (MODPOST 0
modules). I just want my drives to work as expected, I'm not asking that
much. It's too early to switch to libata, in my opinion. Some hardware
still requires DMA.
** Changed in: ubuntu
Status: New => Confirmed
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DMA and UDMA issues with intrepid
https://bugs.launchpad.net/bugs/292142
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