On Tuesday May 27 2003 03:59 am, John Vickers wrote:
> Tom Brinkman wrote:
> [...]
>
> > Try puttin 'mem=nopentium'
> > in your lilo or grub append line. Don't forget to run 'lilo'.
> > Since it's a kernel parameter, you'll need to reboot.
>
> You appear to be making an oblique reference to the AMD AGP
> speculative caching issue.
>
> Disabling 4M pages with mem=nopentium isn't relevant on 2.4.20 &
> later kernels. The conflicting page attribute kernel bug was
> (believed to be) fixed in 2.4.20, and the earlier 2.4.19
> workarround patch ("adv-spec-cache patch") is no longer relevant.
> The Mandrake 9.0 kernel: 2.4.19-16mdk included the workarround
> patch.
>
> See:
> http://www.ussg.iu.edu/hypermail/linux/kernel/0302.2/1615.html
>
> Since the timings for the return data phase of an AGP read are
> very similar to the timings for an AGP Fast Write, electrical
> problems with that transfer type seem less likely to me than some
> kind of logic problem.
>
> John.
Yes, an I believe as you do the problem is solved in newer
kernels. Still many users, specially those who taint their kernel
with the nVidia driver and/or other proprietary kernel corruptions,
swear the nopentium parameter is still needed. That's why I
suggested to try it. I have an nVidia AGP card, don't use
nopentium, don't use the nVidia driver, no problems with a 6-4-4
Athlon oc'd to 1.5GHz on a kt133a chipset.
--
Tom Brinkman Corpus Christi, Texas
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