On Thu, Mar 22, 2012 at 04:00:30PM +0100, Dr.-Ing. Edgar Alwers wrote:
> On Wed, 21 Mar 2012 20:14:12 +0000
> Ken Moffat <[email protected]> wrote:
> > 
> >  I'm not sure if I've parsed that correctly - you say that the
> > desktop used to work, but the new kernel broke it ?  I assume you
> > mean that the mouse and keyboard stopped working in xorg ?
> 
> It was not so clear for me at the beginning. I will try to explain the hole 
> problem again:
> 
> My wife has a PC and a Laptop ( ThinkPad). Both build from the scratch, with 
> the new xorg. Both were working. Then, we needed to recompile the kernel ( 
> Linux-3.1 ) in the Laptop, to enable wireless.After compilation, the KDE 
> Desktop showed up, but no keybords and no mouse were working. Then, as a try, 
> we compiled again the existing kernel in the PC, withouth changing anything, 
> and the keyboard and mouse stopped working, exactly like on the Laptop. The 
> last issue means: kernel compiled during LFS7, BLFS build, everything 
> working. Kernel recompiled, withouth changes, keyboard and mouse stopped 
> working !
> 
 If you haven't updated to a newer kernel, then the difference
between your kernel config files contains something that causes
the problem.

 So, if you have both the good and the bad versions, diff them to
identify what you changed and then reinstate things you've removed,
and remove things you've added, until the kernel works.

 Alternatively, start from the working kernel config, and try again
to enable wireless.  Don't change a lot of options at a time.

 Once you have it workng satisfactorily, I suggest you update the
kernel to either the latest 3.2 (3.2.12 at the moment - 3.1 is no
longer maintained), or to the latest 3.3 (currently 3.3 itself).

 NB - just because a config works fine on one machine doesn't mean
it will work fine on another, even if they are *nominally* identical
machines - often, some of the hardware can differ (e.g. different
revisions of a particular chip), or different bios settings can make
things work differently.

ĸen
-- 
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