Re: Turion64 clock and the APIC
On Wed, Aug 17, 2005 at 11:06:06PM -0700, Alex Perry wrote:
> I've been using a Turion64 based laptop for a couple of weeks,
> installed with Sarge/Pure64 in a single boot configuration,
> and everything is as expected. Just like my Athlon64 laptops.
> There's just one irritating thing. Unless I specify NOAPIC,
> the system clock runs exactly twice as fast as wall clock.
> It maintains that ratio irrespective of the CPU frequency.
> It's true in both the Debian "kernel-image-2.6.8-11-amd64-k8"
> as well as the most recent 220.127.116.11 stable release (local build).
> Has anyone come across a patch to fix the problem neatly so I
> can turn my the APIC again? Just thought I'd ask on list ...
> HP L2005: ML-34, ATI south & video, RTL8139, Broadcom, rest TI.
As far as I have been able to follow on lkml, this is a known problem on
ATI chipsets. The cause has not yet been found it seems. it could be a
bug in the hardware, or the kernel using the hardware slightly wrong.
You might want to go look for that thread on lkml archives.