Re: [gentoo-user] too many kernel problems!

[Richard Fish]

Iain Buchanan wrote:

>Hi list!
>
>you may remember my post recently[1] on 2.6.13 problems (it was very
>slow to run).  This turned out to be a hyperthreaded issue[2], which was
>fixed by a couple of patches [3], [4].
>
>However, I can't find a kernel that will run both a) hyperthreading and
>b) suspend / resume in a stable manner!
>
>Here's a little table to show what I mean.  The c-state patch is the one
>required to get HT working.  With it, suspend (to disk) doesn't work,
>without it, usability is crap!
>
>    kernel  c-state patch?   SMP speed  suspend    general
>2.6.12-gr7       no            fast     untested    stable
>----------
>2.6.13-gr2       no            slow      stable     stable
>2.6.13-gr2      yes            fast     unstable
>----------
>2.6.13-gr3       no
>2.6.13-gr3      yes            fast     unstable   unstable
>
>I can't yet post any of this on bugzilla.kernel.org because I'm not
>using vanilla sources.  It would take more time that I have right now to
>try it all again with vanilla.
>
>So, my question is: Do I have to give up suspend? (I hope not, as when
>it does work it works great and only takes a few seconds to suspend /
>start up).  Is it worth a bugzilla entry anywhere?
>
>[I'm using only the gentoo-sources for suspend, no extra patches or
>utilities.  To suspend, I just type `echo shutdown > /sys/power/disk;
>echo disk > /sys/power/state` as root]
>
>I'm hoping there are some kernel guru's out there somewhere that can
>give me some pointers.
>
>

You might trying playing with some kernel boot options 
(kernel-parameters.txt).  I have, at various times, needed one of:

acpi=ht
pci=routeirq

in order for suspend/resume to become stable.

HTH,
-Richard


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