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List Archive: gentoo-desktop
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To: gentoo-desktop@g.o
From: Donnie Berkholz <dberkholz@g.o>
Subject: Re: System problems
Date: Tue, 22 Mar 2011 16:35:25 -0500
On 02:38 Mon 21 Mar     , Lindsay Haisley wrote:
> On Sun, 2011-03-20 at 21:13 -0500, Donnie Berkholz wrote:
> > I also suspect What Jean-Marc said is the problem. I'd recommend 
> > completely disabling everything in the old ATA section to ensure it 
> > doesn't attempt to control any devices, while building the PATA 
> > driver into the kernel and using root=/dev/sdXN in the grub 
> > parameters.
> If I use the stock configuration from the 2.6.36-gentoo-r5 kernel, 
> won't this have the correct basic kernel facilities built in, at least 
> as far as the deprecated IDE capabilities are concerned and the libata 
> replacement?  I assume the Gentoo devs modify kernels so that the 
> default config settings are more appropriate than those which come 
> with the vanilla kernel from the kernel devs, yes?

Things are pretty vanilla, as per Gentoo philosophy, unless you run 
genkernel to build your kernel. I wouldn't rely on anything being built 
in for a manually configured kernel.

Take a look at the kernel config guide if you want some pointers:

> Putting "root=/dev/sda4" on the kernel cmd line in grub actually 
> worked, and got me a bit further in the boot process.  The kernel 
> obviously understood it.  However later in the boot process, I got 
> "Checking the root filesystem", following by an error message that the 
> root filesystem spec of /dev/sda4 wasn't understood.  This is a 
> complaint about the root fs spec is in /etc/fstab, since I had been 
> using a UUID spec there, and got an error at the same point in the 
> boot-up about the UUID instead.

That is symptomatic of a missing driver for an ATA controller or root 

> > It might be a worthwhile step to boot from a LiveCD and run `lspci 
> > -k` to identify the kernel modules.
> lsmod will probably give the same useful information.

The useful thing about `lspci -k` is it only shows modules actually used 
by hardware on your system, rather than the huge superset of modules 
that are loaded.


Donnie Berkholz
Desktop project lead
Gentoo Linux
pgpLM6rMJSfK9.pgp (PGP signature)
System problems
-- Lindsay Haisley
Re: System problems
-- Jean-Marc Beaune
Re: System problems
-- Lindsay Haisley
Re: System problems
-- Donnie Berkholz
Re: System problems
-- Lindsay Haisley
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Updated Jun 28, 2012

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