Sound problem on Lenovo X61

/sys/class/sound/hwC0D0/hints:

!!ALSA/HDA dmesg
!!--------------

[ 15.112917] Non-volatile memory driver v1.3
[ 15.256360] hda_intel: probe_mask set to 0x1 for device 17aa:20ac
[ 15.256425] snd_hda_intel 0000:00:1b.0: irq 44 for MSI/MSI-X
[ 15.272751] kvm: disabled by bios
--
[ 15.910945] Mic=0x14
[ 15.916575] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[ 15.916691] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
[ 15.916777] input: HDA Intel Dock Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7
[ 15.917775] [drm] Memory usable by graphics device = 512M