Re: Disabling drm/ttm/radeon module loading for debugging

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On Sat, 2010-01-23 at 18:49 +0200, Pasi Kärkkäinen wrote:
> On Sat, Jan 23, 2010 at 11:41:15AM -0500, Clyde E. Kunkel wrote:
> > On 01/23/2010 09:08 AM, Pasi Kärkkäinen wrote:
> >> Hello,
> >>
> >> How can I make sure drm/radeon/ttm modules are not loaded,
> >> until I do it manually myself?
> >>
> >> I extracted the initrd image, edited the 'init' script and
> >> commented out loading of the modules, repacked the initrd,
> >> and booted but something (plymouth? udev?) still loads the modules..
> >>
> >> I'd like to load them later manually, for some debugging purposes..
> >>
> >> -- Pasi
> >>
> >
> > Try adding nomodeset to the kernel line in grub.conf.
> >
> 
> Sorry forgot to mention that I already have nomodeset..
> It seems it's not enough.

You should be able to rmmod them with nomodeset, the driver
doesn't do any initialisation in that case. though you
should boot to runlevel 3 as once X starts the hw will
be initialised.

Then you need to load radeon with modeset=1 to override it.

Dave.


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