Hi everyone, after I installed virtualbox, when I compile the kernel and
execute "make modules_install", the message appears:

WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_open
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_fasync
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_poll
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_core_get_reg_ofs
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_ioctl
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_exit
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_core_get_map_ofs
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_init
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_vblank_init
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_mmap
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_core_reclaim_buffers
WARNING: /lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko needs unknown
symbol drm_release


and when I execute "modprobe vboxvideo", it saied

FATAL: Error inserting vboxvideo
(/lib/modules/2.6.33-gentoo-r2/misc/vboxvideo.ko): Unknown symbol in module,
or unknown parameter (see dmesg)

the output of dmesg is :

vboxvideo: Unknown symbol drm_open
vboxvideo: Unknown symbol drm_fasync
vboxvideo: Unknown symbol drm_poll
vboxvideo: Unknown symbol drm_core_get_reg_ofs
vboxvideo: Unknown symbol drm_ioctl
vboxvideo: Unknown symbol drm_exit
vboxvideo: Unknown symbol drm_core_get_map_ofs
vboxvideo: Unknown symbol drm_init
vboxvideo: Unknown symbol drm_vblank_init
vboxvideo: Unknown symbol drm_mmap
vboxvideo: Unknown symbol drm_core_reclaim_buffers
vboxvideo: Unknown symbol drm_release


But when I use Virtualbox, all things are normal, I wanna know why there are
so many warnings, and why I cannot modprobe vboxvideo

Does it because my kernel didn't include DRM?

Many thanks

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