On Thu, 2010-11-25 at 14:29 +0100, Vincent Caron wrote:
> On Tue, 2010-11-23 at 11:51 +0000, Ian Campbell wrote:
> > One thing I notice when googling R410 issues is that they apparently
> > have a "Cores per CPU" BIOS option which might be worth playing with,
> > since configuring a reduced number of cores might remove node 0 but not
> > node 1 (odd but not invalid?). Presumably it is also worth making sure
> > you have the latest BIOS etc.
> Indeed, I tweaked one BIOS setting, I disabled hyperthreading.
> The R410 BIOS has a CPU menu with (among other options):
> - Logical Processor: this is 'HT', default is enabled, I have disabled
> - Virtualization Technology: default is disabled. Kept disabled.
> - Number of Cores per Processor: default is 'All'. Options are
> single/dual/all. Kept 'all' defalut.
> I just tried to boot Xen 4.0 hypervisor after reverting to the factory
> default 'HT enabled' (aka Logical Processor: Yes), same bug.
> Then I swithed off HT again, and enabled 'Virtualization
> Technology' (setting which I totally overlooked, but why is it disabled
> as default ?). Same bug.
Oh well, thanks for trying it!
> > It's very much an outside possibility but it is also worth trying the
> > packages at http://xenbits.xen.org/people/ianc/ which reinstates the
> > changesets from bcf16b6b4f34fb40a7aaf637947c7d3bce0be671
> OK, should I pick the one in
> http://xenbits.xen.org/people/ianc/squeeze/ ? (I'm running Debian
> Squeeze on this machine)
Yes but that's a bit of a long shot (those packages only put back some
GPU related fixes.
It would be more useful to test the packages at
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