On 02/22/2013 02:32 PM, Reindl Harald wrote:

Am 22.02.2013 20:28, schrieb Robert Moskowitz:

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on a similar/identical bug with Fedora FC17, someone suggested booting with iommu=off to work around this.

Where do I add this?

like every other kernel param in /boot/grub/grub.conf at the end of the kernel line

Kernel param. I really should have caught that.

So I was all ready to edit grub.conf and then slapped my hand. You TEST it out first, adding the command at boot time. ARGH! Once before (5+ years back) I had to add a kernel param and did it wrong and it was a big recovery challenge. No test and verify before making permanent. Whew.

So I googled the param to get its format right, and it is iommu=off. Without that dash in front. But as I read up on this option, it does not sound like something I want to globally turn off just to stop a supposedly annoying message (if they have indeed worked around it, and my new DNS server is running with this OK).

So I will test from booting and typing the option in without actually altering grub.conf. But if there is a way to just stop getting this message, that would be good too.

thank you all for your help.

https://www.google.com/search?q=linux+add+kernel+params http://www.kernel.org/doc/Documentation/kernel-parameters.txt