[Nouveau] [Bug 11918] drmMap of framebuffer failed

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=11918





------- Comment #3 from carlos at cmartin.tk  2007-08-09 13:27 PST -------
xf86-video-nouveau/src/nv_dri.c has a comment showing that we expect (and need)
the FB to be at the beginning of the physical VRAM space.

This has broken now because FIFOs are created in VRAM, so when DRM allocates a
FIFO for itself, it allocates it at the beginning of VRAM, creating a mapping
which is much smaller (32KiB) than the one glxext expects to find at that
offset (namely, half the VRAM).

A second mapping is created, but currently neither the DDX nor glxext are aware
of this change and expect the FB address not to move.


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