Re: [gentoo-user] Is my mobo incompatible with Linux?

pk <peterk2@××××××××.se> wrote:

> On 2012-02-24 17:34, covici@××××××××××.com wrote:
> > Hi.  I have a Supermicro c7P67-o motherboard and I have another system
> > using windows with no problems.  However, when I am trying to use the
> > board with gentoo -- various kernels -- including 3.2.6-gentoo -- I am
> > having lots of problems with USB.  The board has two usb3 connectors and
> > most of the time when I plug a usb3 enclosure into one of those, I get
> > lots of errors such as
> > Feb 23 10:27:31 ccs kernel: xhci_hcd 0000:04:00.0: Timeout while waiting
> > for address device command
> > Feb 23 10:27:31 ccs kernel: usb 3-1: device not accepting address 2,
> > error -62
>
> Hm... Just a "hunch" here since I don't know the exact details regarding
> your setup but you might experience something similar to what I had for
> a while before figuring out how to fix it... On my Asus Sabertooth 990FX
> motherboard I had similar problems with USB (don't remember the exact
> error messages but yours seems familiar). This was fixed by setting the
> IOMMU to OFF in BIOS (UEFI). Perhaps want to give it a try to see if it
> works for you? Of course you'll loose any benefit from IOMMU (if you are
> running VMs) but...
I don't have a UEFI BIOS -- at least the interface looks the same as a
normal one -- I wonder where would I find such a setting?

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici@××××××××××.com