Re: [gentoo-user] swapping processor problem

[Raffaele BELARDI <raffaele.belardi@st.com>]

On 11/16/2011 08:11 AM, Michael Mol wrote:
> Play with your BIOS settings. Look for things like legacy USB support.
> Also, double-check that all the relevant USB drivers (UHCI, EHCI,
> XHCI, HID, etc) are either built-into the kernel, or are loaded as
> modules. Consider rebuilding your kernel.
> 
> Just because one processor has a superset of the instructions of the
> other doesn't mean there may not be other compatibilities. Some time
> back, a thread on here discussed how to find out what -march=native
> becomes, in terms of -march and a bunch of other parameters. I've
> noticed parameters like cache line sizes and cache sizes, among a
> couple others. I imagine a bungling of, e.g., cache line sizes could
> break code that has heavy dependency on data locality and/or memory
> models; it might have broken your USB drivers, for example.
> 
> But, really, I think BIOS settings and driver presence are the more
> likely culprit.
> 

I don't think it was a software issue because the same lock happened
also booting from a live-CD. I ended up swapping the motherboards, now
live-CD boots fine but I need a new kernel.

The march=native thread looks interesting, do you remember the subject
line so I can search it in the archives?