* Loading ALSA modules ...
 *   Loading: snd-card-0 ...
WARNING: Error inserting snd_timer (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-timer.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_pcm (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-pcm.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_ac97_codec (/lib/modules/2.6.17-gentoo-r8/alsa-driver/pci/ac97/snd-ac97-codec.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_ac97_codec (/lib/modules/2.6.17-gentoo-r8/kernel/sound/pci/ac97/snd-ac97-codec.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting snd_intel8x0 (/lib/modules/2.6.17-gentoo-r8/alsa-driver/pci/snd-intel8x0.ko): Unknown symbol in module, or unknown parameter (see dmesg)                                          [ !! ]
 *   Loading: snd-seq-oss ...
WARNING: Error inserting snd_seq_device (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/seq/snd-seq-device.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_timer (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-timer.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_seq (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/seq/snd-seq.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_seq_midi_event (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/seq/snd-seq-midi-event.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting snd_seq_oss (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/seq/oss/snd-seq-oss.ko): Unknown symbol in module, or unknown parameter (see dmesg)                                  [ !! ]
 *   Loading: snd-pcm-oss ...
WARNING: Error inserting snd_mixer_oss (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/oss/snd-mixer-oss.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_timer (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-timer.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_pcm (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-pcm.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting snd_pcm_oss (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/oss/snd-pcm-oss.ko): Unknown symbol in module, or unknown parameter (see dmesg)                                      [ !! ]
 *   Loading: snd-mixer-oss ...
FATAL: Error inserting snd_mixer_oss (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/oss/snd-mixer-oss.ko): Unknown symbol in module, or unknown parameter (see dmesg)                                  [ !! ]
 *   Loading: snd-seq ...
WARNING: Error inserting snd_seq_device (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/seq/snd-seq-device.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_timer (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-timer.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting snd_seq (/lib/modules/2.6.17-gentoo-r8/alsa-driver/acore/seq/snd-seq.ko): Unknown symbol in module, or unknown parameter (see dmesg)                                              [ !! ]
 *   Loading: snd-seq ...
WARNING: Error inserting snd_seq_device (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/seq/snd-seq-device.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting snd_timer (/lib/modules/2.6.17-gentoo-r8/kernel/sound/core/snd-timer.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting snd_seq (/lib/modules/2.6.17-gentoo-r8/alsa-driver/acore/seq/snd-seq.ko): Unknown symbol in module, or unknown parameter (see dmesg)                                              [ !! ]
 * ERROR: Failed to load necessary drivers                                                                                                                                                               [ ok ]
 * Restoring Mixer Levels ... 




dmesg has this:

snd_timer: Unknown symbol snd_oss_info_register
snd_timer: Unknown symbol snd_info_unregister
snd_pcm: Unknown symbol snd_timer_notify
snd_pcm: Unknown symbol snd_timer_interrupt
snd_pcm: Unknown symbol snd_timer_new
snd_pcm: Unknown symbol snd_info_unregister
snd_ac97_codec: Unknown symbol snd_interval_refine
snd_ac97_codec: Unknown symbol snd_pcm_hw_rule_add
snd_ac97_codec: Unknown symbol snd_interval_refine
snd_ac97_codec: Unknown symbol snd_pcm_hw_rule_add
snd_ac97_codec: Unknown symbol snd_info_unregister
snd_intel8x0: Unknown symbol snd_ac97_pcm_close
snd_intel8x0: Unknown symbol snd_ac97_resume
snd_intel8x0: Unknown symbol snd_pcm_new
snd_intel8x0: Unknown symbol snd_pcm_limit_hw_rates
snd_intel8x0: Unknown symbol snd_pcm_lib_preallocate_pages_for_all
snd_intel8x0: Unknown symbol snd_ac97_pcm_open
snd_intel8x0: Unknown symbol snd_ac97_set_rate
snd_intel8x0: Unknown symbol snd_ac97_update_bits
snd_intel8x0: Unknown symbol snd_ac97_mixer
snd_intel8x0: Unknown symbol snd_ac97_bus
snd_intel8x0: Unknown symbol snd_ac97_pcm_double_rate_rules
snd_intel8x0: Unknown symbol snd_ac97_update_power
snd_intel8x0: Unknown symbol snd_ac97_suspend
snd_intel8x0: Unknown symbol snd_pcm_lib_malloc_pages
snd_intel8x0: Unknown symbol snd_pcm_lib_ioctl
snd_intel8x0: Unknown symbol snd_pcm_lib_free_pages
snd_intel8x0: Unknown symbol snd_pcm_set_ops
snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_list
snd_intel8x0: Unknown symbol snd_ac97_get_short_name
snd_intel8x0: Unknown symbol snd_pcm_suspend_all
snd_intel8x0: Unknown symbol snd_ac97_pcm_assign
snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_integer
snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_msbits
snd_intel8x0: Unknown symbol snd_pcm_period_elapsed
snd_intel8x0: Unknown symbol snd_ac97_tune_hardware