Hi Everyone,


I'm in the process of switching my Linux network from Fedora Core 2
to Scientific Linux 4.0. Thanks to quality of the distribution, this
is a rather painless work (as far as migrating can be...).

I've just noticed a problem with the drm/dri support for radeon card.
This is not a critical issue, as we don't make instensive usage of
graphics and 2D works fine. But in case I missed an obvious tweak,
here is the problem description.

For Radeon 7000/VE (RV100 QY) the agpgart kernel module seems not to
detect the card when the "radeon" kernel module is insterted. In the
/var/log/messages there is just the lines :

ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 5 (level, low) -> IRQ 5
[drm] Initialized radeon 1.11.0 20020828 on minor 0:

but nothing indicating that the card has been seen (and /proc/dri/0/*
shows no trace of the card). There seems no problem with mtrr.

I observed the phenomenon on a P4, a Celeron and an Athlon. On the other
hand the agpgart detect correctly nvidia card (with the proprietary driver
1.0.7664). Also, under FC2 the card is detected (xorg 6.7.0).


Thanks.

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    U P M C   Universite Pierre & Marie Curie
    L I P 6   Laboratoire d'Informatique de Paris VI
    A S I M   Architecture des Systemes Integres et Micro-electronique