Richard Welty wrote:
John Wendel <john.wendel@xxxxxxxxxxxxxxx> writes:
On Friday 16 July 2004 11:02 am, Richard Welty wrote:
the kernels i've been using are:
$ rpm -q kernel
kernel-2.6.6-1.435
$ rpm -q kernel-smp
kernel-smp-2.6.6-1.435
i saw slightly newer kernels, so i updated. it didn't help.
when i try to bring the SMP kernel up, it starts but after it reports
using cfq io scheduler
ide0 at 0x1f0-01f7, 03f6 on irq 14
ide-cd: cmd 0x5a timed out
hda: lost interrupt
Total shot in the dark since I don't have a box like this, but I'd disable DMA
on the failing device (assuming that it is on).
well, i couldn't find a way to disable DMA in the bios, but i did
physically remove the IDE CD-ROM drive, and it's running
just fine with the SMP kernel.
how to get 2 CPUs *and* a CD-ROM drive at the same time, now that's
the question.
Did you try adding "noapic" to the boot command? That fixes a lot of
weirdness on SMP mobos--especially AMD ones.
As for disabling DMA, you can disable DMA to a specific device by adding
"hdx=nodma" in the boot command, e.g. "hdc=nodma" if your CD is the
master drive on the secondary controller. How you add either the
"noapic" and/or the "hdx=nodma" depends on your boot loader. For
grub, interrupt grub's boot, edit the boot command, scroll down to the
"kernel" line and tack the desired options on to the end of the line.
Hit ENTER and "B" to boot. If it works, edit /boot/grub/grub.conf
to make the changes permanent.
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer rstevens@xxxxxxxxxxxxxxx -
- VitalStream, Inc. http://www.vitalstream.com -
- -
- A day for firm decisions!!! Well, then again, maybe not! -
----------------------------------------------------------------------
