[ltp] double checking Debian's 686-pae vs. -486 probe

Robert Tomsick linux-thinkpad@linux-thinkpad.org
Tue, 24 May 2011 10:22:46 -0400


On Tue, 2011-05-24 at 08:07 +0200, Yves-Alexis Perez wrote:
> On mar., 2011-05-24 at 07:59 +0800, jidanni@jidanni.org wrote:
> > Recently Debian sid split the kernel into these two packages,
> > 
> > linux-image-2.6.39-1-486_2.6.39-1_i386.deb
> > linux-image-2.6.39-1-686-pae_2.6.39-1_i386.deb
> > 
> > My Thinkpad ended up being told by the installation scripts to use -486.
> > 
> > But my Thinkpad isn't really very old... how can one double check to see
> > if the decision was correct? I can't figure it out even after probing
> > the .debs to find just where they probe the choice. 
> 
> The thread at
> http://lists.debian.org/debian-kernel/2011/02/msg00244.html might give
> you some info.
> 
> Basically you need to check if you have the pae and nx flags in the
> cpuinfo output. Iirc pentium M don't have them, so they do need -486 but
> later cpu should be ok for -686-pae.

I believe that some of the late Dothans *do* have support for NX (and
thus PAE).  I don't know whether any of those shipped in ThinkPads
though...

-Rob