I recompile with new alsa-driver-1.0.15, alsa-lib, alsa-utils.
then I create alsa-base on /etc/modprobe.d/
This was an installation guide from ubuntuforums.org

can anyone please help

I am using LinuxMint-4.0 on a Toshiba A215-7422

[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_ctl_add
[ 20.744000] snd_hda_intel: Unknown symbol snd_ctl_add
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_new
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_new
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_limit_hw_rates
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_limit_hw_rates
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_card_register
[ 20.744000] snd_hda_intel: Unknown symbol snd_card_register
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_card_free
[ 20.744000] snd_hda_intel: Unknown symbol snd_card_free
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_lib_preallocate_pages_for_all
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_lib_preallocate_pages_for_all
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_card_proc_new
[ 20.744000] snd_hda_intel: Unknown symbol snd_card_proc_new
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_ctl_find_id
[ 20.744000] snd_hda_intel: Unknown symbol snd_ctl_find_id
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_ctl_new1
[ 20.744000] snd_hda_intel: Unknown symbol snd_ctl_new1
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_component_add
[ 20.744000] snd_hda_intel: Unknown symbol snd_component_add
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_card_new
[ 20.744000] snd_hda_intel: Unknown symbol snd_card_new
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_lib_malloc_pages
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_lib_malloc_pages
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_lib_ioctl
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_lib_ioctl
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_lib_free_pages
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_lib_free_pages
[ 20.744000] snd_hda_intel: Unknown symbol snd_ctl_elem_read
[ 20.744000] snd_hda_intel: Unknown symbol snd_ctl_elem_write
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_set_ops
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_set_ops
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_hw_constraint_list
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_hw_constraint_list
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_device_new
[ 20.744000] snd_hda_intel: Unknown symbol snd_device_new
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_suspend_all
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_suspend_all
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_card_disconnect
[ 20.744000] snd_hda_intel: Unknown symbol snd_card_disconnect
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_hw_constraint_integer
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_hw_constraint_integer
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_period_elapsed
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_period_elapsed
[ 20.744000] snd_hda_intel: disagrees about version of symbol snd_pcm_hw_constraint_step
[ 20.744000] snd_hda_intel: Unknown symbol snd_pcm_hw_constraint_step
[

thank you

I have the same laptop, and I followed this http://www.datanorth.net/~cuervo/blo...te-a215-s7407/
how-to. Downloaded Realtek drivers and installed them. Everything works perfectly.
But then, some user here told me it didn't work for them.
http://www.linuxquestions.org/questi...-users.-609321
So, I don't know what to say. Perhaps, you could try if it works for you...