[pkg-nvidia-devel] Bug#583312: Bug#583312: possible fix

Jean-Christophe Dubacq jcdubacq1 at free.fr
Thu May 27 19:53:07 UTC 2010

On 27/05/2010 17:03, Russ Allbery wrote:
> Petter Reinholdtsen <pere at hungry.com> writes:
>> [Russ Allbery]
>>> If you're experiencing a variant of #521699, then the problem is
>>> that the timeout in KDM is too fast.  You need to tell KDM to wait
>>> longer; it takes the NVIDIA driver longer to initialize the card
>>> than it's willing to wait for.  I suspect that the only thing that
>>> parallel booting is doing is starting kdm sooner and hence giving
>>> the NVIDIA module even less time to initialize the hardware.
>> What is loading the nvidia driver?  When is it done?
> It's loaded dynamically by the X server when it starts.  These days, I
> believe that's done via the device mappings provided in the
> nvidia-kernel-common package, which alias char-major-195* to the nvidia
> kernel module, although I'm not deeply familiar with the details of how
> dynamic hardware initialization is handled.  But the kernel module is not
> loaded until the X server is started, and it's loaded automatically at
> that point.
>> If it is done by some init.d script,
> It's not, unless the mknod commands in the nvidia-kernel init script are
> doing some sort of deep magic that I'm fairly sure they're not.  There's
> definitely no explicit call to modprobe anywhere in an init script
> provided by NVIDIA packages.

udev makes some things with the ACLs for console users which might delay
things, but that's a moot point here, since kdm probably runs as root.

Jean-Christophe Dubacq

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